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X-15

X-15

The North American X-15 rocket plane was perhaps the most important of the USAF/USN X-series of experimental aircraft. Although not as famous as the Bell X-1, the X-15 set numerous speed and altitude records in the early 1960s, reaching the edge of space and bringing back valuable data that was used in the design of later aircraft and spacecraft. During the X-15 program, 13 flights met the US criterion for a spaceflight by passing an altitude of 50 miles (80 km) and the pilots were accordingly awarded astronaut status by the USAF. Out of these, 2 also qualified for the international FAI definition of a spaceflight by passing the 62.1 miles (100 km) mark.

History

FAI The original Request for Proposals was issued for the airframe December 30, 1954, and for the rocket engine on February 4, 1955. North American received the airframe contract in November 1955, and Reaction Motors contracted in 1956 to build the engines. As with many of the X-aircraft, the X-15 was designed to be carried aloft under the wing of a B-52. The fuselage was long and cylindrical, with fairings towards the rear giving it a flattened look, and it had thick wedge-shaped dorsal and ventral fins. The retractable landing gear consisted of a nose wheel and two skids — to provide sufficient clearance part of the ventral fin had to be jettisoned before landing. The two XLR-11 rocket engines of the initial model X-15A delivered 36 kN (8,000 lbf) of thrust; the "real" engine that came later was a single XLR-99 that delivered 254 kN (57,000 lbf) at sea level, and 311 kN (70,000 lbf) at peak altitude. The first flight was an unpowered test made by Scott Crossfield on June 8, 1959 (making him the first man to go supersonic in a glider), who followed up with the first powered flight on September 17. The first flight with the XLR-99 was on 15 November 1960. Three X-15s were built in all, and they made a total of 199 test flights, the last one on October 24, 1968. Plans were made for a 200th X-15 flight to be launched over Smith Ranch, Nevada. It was scheduled for November 21, 1968 with William J. Knight as the pilot. Various technical and weather delays caused the planned launch to slip at least six times until late December, 1968. Finally after a cancellation on December 20, 1968 due to weather, it was decided there would not be a 200th flight. The X-15 ground crew de-mated the aircraft from the NB-52A, and prepared it for indefinite storage. X-15 #1 was sent to the National Air and Space Museum in Washington, DC. X-15 #2 is on display at the National Museum of the United States Air Force at Wright-Patterson Air Force Base near Dayton, Ohio. X-15 #3, 56-6672, was destroyed in a crash on November 15, 1967. Twelve test pilots flew the plane, including Neil Armstrong, later the first man on the Moon and Joe Engle who went on to command Space Shuttle missions. In July and August, 1963, pilot Joe Walker crossed the 100 km altitude mark twice, becoming the first person to enter space twice. Test pilot Michael J. Adams was killed on November 15, 1967 when his X-15-3 began to spin on descent and then disintegrated when the acceleration reached 15 g (147 m/s²), scattering wreckage over 50 square miles. On June 8, 2004 a memorial monument was erected at the location of cockpit [http://www.check-six.com/Crash_Sites/X-15A_crash_site.htm crash site] near Randsburg, California. Michael Adams was posthumously awarded astronaut wings for his last flight in the X-15-3, which had attained an altitude of 266,000 feet (81.1 Km). In 1991 Adams' name was added to the Astronaut Memorial at the Kennedy Space Center in Florida. The second X-15A was rebuilt after a landing accident. It was lengthened by about 0.74 m (2.4 ft), received a pair of auxiliary fuel tanks slung under the fuselage, and was given a heat-resistant surface treatment, the result being called the X-15A-2. It first flew June 28, 1964, and eventually reached a speed of 7,274 km/h (4,520 mi/h or 2,021 m/s). The altitudes attained by the X-15 remained unsurpassed by any piloted aircraft except the Space Shuttle until the 3rd spaceflight of SpaceShipOne in 2004. The speeds and altitudes have, also, frequently been exceeded by unpiloted air-launched rockets, such as the Pegasus rocket which has carried several satellites all the way into orbit. The widely reported record achieved by the diminutive X-43A scramjet testbed on November 16, 2004 of nearly Mach 10 (10,621 km/h or 2.95 km/s) at 95,000 ft (29 km) is only a record for an air-breathing jet engine.

Specifications (X-15)

jet engine

General characteristics

- Crew: 1
- Length: 50.7 ft (15.45 m)
- Wingspan: 22.3 ft (6.8 m)
- Height: 13.5 ft (4.12 m)
- Wing area: 200 ft² (18.58 m²)
- Empty: 14,600 lb (6,623 kg)
- Loaded: 34,000 lb (15,422 kg)
- Maximum takeoff: 34,000 lb (15,422 kg)
- Powerplant: 1x Thiokol XLR99-RM-2 liquid-fuel rocket engine, 70,400 lbf (313 kN) thrust (at 30 km)

Performance

- Maximum speed: 4,520 mph (7,274 km/h) Mach 6.72
- Range: 280 miles (450 km)
- Service ceiling: 67 miles (108 km)
- Rate of climb: 60,000 ft/min (18,000 m/min)
- Wing loading: kg/m² ( lb/ft²)
- Thrust/weight:
- Serial Numbers: (Five main aircraft were involved in the X-15 program. The three X-15's and two B-52 carrier aircraft.)
- X-15A-1 - 56-6670, 82 powered flights
- X-15A-2 - 56-6671, 53 powered flights
- X-15A-3 - 56-6672, 64 powered flights
- NB-52A - 52-003 (retired October 1969)
- NB-52B - 52-008 (retired November 2004)

Record flights

Highest flights

In the United States there are two definitions of how high a person must go to be referred to as an astronaut. The USAF decided to award astronaut wings to anyone who achieved a altitude of 50 miles (80 km) or more. However the FAI set the limit of space at 100 km. Thirteen X-15 flights went higher than 50 miles (80 km) and two of these reached over 100 km.

Fastest flights

X-15 Pilots

References

- Robert Godwin, ed., X-15 (The NASA Mission Reports), (Apogee Books, 2001) ISBN 1896522653
- Milton O. Thompson and Neil Armstrong, At the Edge of Space: The X-15 Flight Program (Smithsonian Institution Press, 1992) ISBN 1560981075
- Richard Tregaskis, X-15 Diary: The Story of America's First Space Ship (iUniverse.com, 2000) ISBN 0595002501
- [http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20000068530_2000075022.pdf Hypersonics Before the Shuttle: A Concise History of the X-15 Research Airplane - NASA report (PDF format)]
- [http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19650010561_1965010561.pdf X-15 research results with a selected bibliography - NASA report (PDF format)]
- [http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19920075739_1992075739.pdf Flight experience with shock impingement and interference heating on the X-15-2 research airplane 1968 - NASA (PDF format)]
- [http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19680016245_1968016245.pdf Thermal protection system X-15A-2 Design report 1968 - NASA report (PDF format)]
- [http://history.nasa.gov/monograph31.pdf American X-Vehicles: An Inventory X-1 to X-50, SP-2000-4531 - June 2003; NASA online PDF Monograph]

External links

- [http://history.nasa.gov/x15/cover.html NASA's X-15 website]
- [http://www.hq.nasa.gov/office/pao/History/SP-60/cover.html X-15 Research Results With a Selected Bibliography (NASA SP-60, 1965)]
- [http://www.hq.nasa.gov/office/pao/History/hyperrev-x15/cover.html "Transiting from Air to Space: The North American X-15" (1998)]
- [http://www.hq.nasa.gov/office/pao/History/x15conf/cover.html "Proceedings of the X-15 First Flight 30th Anniversary Celebration of June 8, 1989"]
- [http://history.nasa.gov/monograph18.pdf (PDF) Hypersonics Before the Shuttle: A Concise History of the X-15 Research Airplane (NASA SP-2000-4518, 2000)]
- [http://www.x15.com unofficial X-15 website]
- [http://www.x-15.com Another unofficial X-15 website]
- [http://www.hq.nasa.gov/office/pao/History/SP-60/cover.html X-15 Research Results (1964)]
- [http://www.dfrc.nasa.gov/gallery/photo/X-15/ X-15 photos at Dryden]
- [http://www.astronautix.com/craft/x15a.htm Encyclopedia Astronautica's X-15 chronology]
- [http://www.xb-70.com/wmaa/x15/monument/ Major Michael Adams Monument]
- [http://perso.wanadoo.fr/prototypes.com/x15/index.html X-15 site in french, all missions details]

Rocket plane

A rocket-powered aircraft or rocket plane is an aircraft that uses a rocket for propulsion, sometimes in addition to jet engines. Rocket planes can achieve much higher speeds than similarly-sized jet aircraft, but for much shorter periods of operation, typically only a few minutes. Because of the expense and the various practical difficulties of operating rockets, these are poor choices for most aviation needs, and so are invariably specialised, mostly experimental, aircraft. The first rocket-powered aircraft was the Lippisch Ente, flown in 1928. The only rocket plane ever to be mass-produced was the Messerschmitt Me 163 in 1944, one of several German World War II attempts at rocket-powered aircraft. The first truly successful rocket plane was the North American X-15, which was used for several years and eventually broke Mach 6.0. The development of SpaceShipOne, first flown in 2003, suggests that rocket planes may become more common, as spaceplanes are one of very few practical ways to reach space.
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USAF

The United States Air Force (USAF) is the aviation branch of the United States armed forces. The USAF was formed as a separate branch of the military on September 18, 1947. Previously, the Army was responsible for non-naval military aviation under the US Army Air Forces. The USAF is the largest modern air force in the world, with over 7,000 aircraft in service, and air bases around the world. Since World War I, the USAF and its predecessors have taken part in military conflicts throughout the world. The USAF is widely considered to be the most technologically advanced in the world. The stated mission of the USAF is "deliver sovereign options for the defense of the United States of America and its global interests -- to fly and fight in Air, Space, and Cyberspace".[http://www.af.mil/news/story.asp?storyID=123013440]

History

The USAF was first formed on September 18, 1947, following the passing of the National Security Act. The Act created the Department of Defense, which was composed of three branches, the Army, Navy and a newly created Air Force. Prior to 1947, military aviation was the responsibility of the Army, while the Navy maintained a fleet air arm on its fleet of aircraft carriers. The Army branch was known as the US Army Air Corps and later the US Army Air Force.

Formation

The US military first began to experiment with military aviation in December 1906, when ‘’Army Specification #486’’ was authorized, which looked the creation of aircraft for military usage. In 1908, the Wright Brothers signed a contract with the Army to bolster the operations. The first air divisions were created following the establishment of an Aviation Section of the US Army Signal Corps.

World War I

In 1917, upon the United States' entry into World War I, the U.S. Army Air Service was formed as part of the American Expeditionary Force (AEF). Major General Mason Patrick commanded the AEF Air Forces; his deputy was Major General Billy Mitchell. The Air Service provided tactical support for the U.S. Army, especially during the Battle of Saint-Mihiel and the Meuse-Argonne offensives. Among the aces of the Air Service were Captain Eddie Rickenbacker and Frank Luke. In 1926 the Air Service was reorganized as a branch of the Army and became the U.S. Army Air Corps (USAAC). During this period, the USAAC began experimenting with new techniques, including air-to-air refueling and the development of the B-9 and the Martin B-10, the first all-metal monoplane bomber, and new fighters. In 1937, the B-17 Flying Fortress made its first appearance. In a spectacular feat of navigation, three B-17s intercepted the Italian passenger liner Rex at sea.

World War II

Italian passenger liner Rex.]] World War II led to further changes. In 1941, the Army Air Corps became the U.S. Army Air Force and the GHQ Air Force was redesignated the Air Force Combat Command. In the major military reorganization effective March 9, 1942, the newly designated United States Army Air Forces gained equal voice with the Army and Navy. In Europe, the USAAF began daylight bombing operations, over objections of the Royal Air Force planners on the Combined Chiefs of Staff. The US strategy involved flying bombers together, relying on the defensive firepower of a close formation. The tactic was only successful in part. American fliers took tremendous casualties during raids on the oil refineries of Ploiesti, Romania and the ball-bearing factories at Schweinfurt and Regensburg, Germany. When the P-51 Mustang, with its increased range, was introduced to combat, American combat losses dropped, and operations during Big Week in late winter of 1944 caused the Luftwaffe to lose experienced pilots. In the Pacific Theater of Operations, the USAAF used the B-29 Superfortress to launch attacks on the Japanese mainland from China. One of the major logistical efforts of the war, "flying the Hump" over the Himalayas, took place. To carry both a bomb load and fuel and to bomb at high altitude through the jet stream affected the B-29's range. As soon as airbases on Saipan were captured in 1944, General Curtis LeMay changed strategy from high-level precision bombings to low-level incendiary bombings, aimed at destroying the distributed network of Japanese industrial manufacturing. Many Japanese cities suffered extensive damage. Tokyo suffered a firestorm in which over 100,000 persons died. The B-29 was also used to drop one primitive nuclear weapon on each of the Japanese cities of Hiroshima and Nagasaki, in August 1945.

Post War

The United States Department of the Air Force was created when President Harry S. Truman signed the National Security Act of 1947. It became effective September 18, 1947, when Chief Justice Fred M. Vinson administered the oath of office to the first secretary of the Air Force, Stuart Symington. The Korean War saw the Far Eastern Air Force losing its main airbase in Kimpo, South Korea, and forced to provide close air support to the defenders of the Pusan pocket from bases in Japan. However, General Douglas B. MacArthur's landing at Inchon in September 1950 enabled the FEAF to return to Kimpo and other bases, from which they supported MacArthur's drive to the Korean-Chinese border. When the Chinese People's Liberation Army intervened in December, 1950, the USAF provided tactical air support. The introduction of the Soviet-made MiG-15 caused problems for the B-29s used to bomb North Korea, but the USAF countered the MiGs with the F-86 Sabre.

Vietnam War

The USAF were heavily deployed during the Vietnam War. The first bombing raids against North Vietnam occurred in 1965 following the Gulf of Tonkin Incident in 1964. Codenamed, Operation Rolling Thunder, the purpose was to destroy the will of the North Vietnamese to fight, to destroy industrial bases and air defences, and to stop the flow of men and supplies down the Ho Chi Minh Trail. The USAF was to drop more bombs during this campaign than all the bombs dropped during World War II. The bombing campaign lasted until 1972. The bombing of villages using napalm, and the high civilian causalities in the North was controversial and led to massive anti-American protests throughout the world. Nevertheless, the operation was militarily effective, stopping a major North Vietnamese Army offensive in 1972.

Cold War

Following the end of World War II, relations between the United States and the Soviet Union began to sour, and the period in history known as the Cold War began. This period saw the United States enter a arms race with the Soviet Union, and competition to increase influence throughout the world. In response the United States expanded its military presence throughout the world. The USAF opened air bases throughout Europe, and later in Japan and South Korea. The United States also built air bases on the British overseas territories of British Indian Ocean Territory and Ascension Island in the South Atlantic. The first test for the USAF during the Cold War occurred in 1948 when Communist authorities in Eastern Germany cut off road and air transportation to West Berlin. The USAF, along with the Royal Air Force, supplied the city during the Berlin airlift, using C-121 Constellation and the C-54 Skymaster. The efforts of the USAF and RAF saved the city from starvation and forced the Soviets to back down in their blockade when they realised it wasn't working.

Bosnia and Kosovo

The USAF led NATO action in Bosnia in 1994 with air strikes against the Bosnian Serb. This was the first time that USAF aircraft took part in military action as part of a NATO mission. The USAF led the strike forces as the only NATO air force with the capability to launch significant air strikes over a long period of time. Later the USAF led NATO air strikes against Serbia during the Kosovo War. The forces were later criticised for attacking civilian targets in Belgrade, including a strike on the civilian television station, and a later attack which destroyed the Chinese Embassy.

Iraq and Afghanistan

Belgrade The USAF provided the bulk of the Allied air power during the first Gulf War in 1991. This was the first war that the F-117 Nighthawk was deployed. The Stealth fighter's capabilities were shown on the first night of the air war when they were able to bomb central Baghdad and avoid the Iraqi's sophisticated anti-aircraft defences. The USAF later patrolled the skies of Northern and Southern Iraq after the war to protect minorities persecuted by the Iraqi regime under Saddam Hussein. In 2001, the USAF was deployed against the Taliban forces in Afghanistan. Operating from Diego Garcia, B-52 Stratofortress attacked Taliban positions, and deploying daisy cutter bombs for the first time since the Vietnam War. During this conflict the USAF opened up bases in Central Asia for the first time. The USAF was more recently deployed in the 2003 invasion of Iraq. Following the defeat of Saddam Hussein’s regime, the USAF took over Baghdad International Airport as a base. USAF aircraft are used to provide support to Coalition and Iraqi forces in major operations to eliminate insurgent centers of activity and supply in north and west Iraq.

Organization

The Department of the Air Force consists of the Office of the Secretary of the Air Force (SECAF), the Air Staff, and field units.

SECAF

The Office of the SECAF includes the Secretary, Under Secretary, Assistant Secretaries, General Counsel, The Inspector General, Air Reserve Forces Policy Committee, and other offices and positions established by law or the SECAF. The Office of the SECAF has responsibility for acquisition and auditing, comptroller issues (including financial management), inspector general matters, legislative affairs, and public affairs. In 2004 the Secretary of the Air Force was Dr. James G. Roche who stepped down as SECAF on January 20th, 2005. In 2005 the Secretary of the Air Force is Michael Wynne.

Air Staff

Michael Wynne The Air Staff primarily consists of military advisors to the CSAF and the SECAF. This includes the Chief of Staff, Vice Chief of Staff, and Assistant Vice Chief of Staff, the Chief Master Sergeant of the Air Force (CMSAF), four deputy chiefs of staff (DCS), the US Air Force Surgeon General, The Judge Advocate General, the Chief of the Air Force Reserve, and additional military and civilian personnel as the SECAF deems necessary. In 2005 the Chief of Staff of the Air Force was General (Gen) T. Michael Moseley. The Chief Master Sergeant of the Air Force is the senior enlisted person in the Air Force. In 2004 the position was held by Chief Master Sergeant (CMSgt) Gerald R. Murray.

Field Units

The Department of the Air Force field units are MAJCOMs, field operating agencies (FOA), and direct reporting units (DRU).

Major commands (MAJCOMs)

The USAF is organized on a functional basis in the United States and a geographical basis overseas. A major command (MAJCOM) represents a major Air Force subdivision having a specific portion of the Air Force mission. Each MAJCOM is directly subordinate to HQ USAF. MAJCOMs are interrelated and complementary, providing offensive, defensive, and support elements. An operational command consists (in whole or in part) of strategic, tactical, space, or defense forces; or of flying forces that directly support such forces. A support command may provide supplies, weapon systems, support systems, operational support equipment, combat material, maintenance, surface transportation, education and training, or special services and other supported organizations. The USAF is organized into nine MAJCOMS, 7 Functional and 2 Geographic, reporting to Headquarters, United States Air Force (HQ USAF):

Numbered Air Forces (NAF)

See main article: List of Numbered Air Forces The NAF is a level of command directly under a MAJCOM (Major Command). NAFs are tactical echelons that provide operational leadership and supervision. They are not management headquarters and do not have complete functional staffs. Many NAFs are responsible for MAJCOM operations in a specific geographic region or theater of operations. A NAF is assigned subordinate units, such as wings, groups, and squadrons.

Wings

See main article: List of Wings. The wing is a level of command below the NAF. A wing has approximately 1,000 to 5,000 personnel and a distinct mission with significant scope. It is responsible for maintaining the installation and may have several squadrons in more than one dependent group. A wing may be an operational wing, an air base wing, or a specialized mission wing.

Operational Wing

An operational wing is one that has an operations group and related operational mission activity assigned to it. When an operational wing performs the primary mission of the base, it usually maintains and operates the base. In addition, an operational wing is capable of self-support in functional areas like maintenance, supply, and munitions, as needed. When an operational wing is a tenant organization, the host command provides it with varying degrees of base and logistics support.

Air Base Wing

Some bases which do not have operational wings or are too large or diverse for one wing will have an Air Base Wing (ABW). The ABW performs a support function rather than an operational mission. It maintains and operates a base. An air base wing often provides functional support to a MAJCOM headquarters. Wings are composed of several groups with different functional responsibilities. Groups are composed of several squadrons, each of which has one major responsibility or flying one type of aircraft. Squadrons are composed of two or more flights.

Operational Organization

Air Base Wing The above organizational structure is responsible for the peacetime Organization, Equipping, and Training of aerospace units for operational missions. When required to support operational missions, the National Command Authority directs a Change in Operational Control (CHOP) of these units from their peacetime alignment to a Combatant Commander (COCOM).

Aerospace Expeditionary Task Force (ASETF)

CHOPPED units are referred to as "forces". The top-level structure of these forces is the Aerospace Expeditionary Task Force (ASETF). The ASETF is the Air Force presentation of forces to a COCOM for the employment of Air Power. Each COCOM is supported by a standing Warfighting Headquarters (WFHQ) to provide planning and execution of aerospace forces in support of COCOM requirements. Each WFHQ consists of a Commander, Air Force Forces (COMAFFOR), and AFFOR staff, and an Air Operations Center (AOC). As needed to support multiple Joint Force Commanders (JFC) in the COCOM's Area of Responsibility (AOR), the WFHQ may deploy Air Component Coordinate Elements (ACCE) to liaise with the JFC.

Commander, Air Force Forces (COMAFFOR)

The COMAFFOR is the senior Air Force officer responsible for the employment of Air Power is support of JFC objectives. The COMAFFOR has a special staff and an A-Staff to ensure assigned or attached forces are properly organized, equipped, and trained to support the operational mission.

Air Operations Center (AOC)

The AOC is the COMAFFOR's Command and Control (C²) center. This center is responsible for planning and executing air power missions in support of JFC objectives.

Air Expeditionary Wings/Groups/Squadrons

The ASETF generates air power to support COCOM objectives from Air Expeditionary Wings (AEW) or Air Expeditionary Groups (AEG). These units are responsible for receiving combat forces from Air Force MAJCOMs, preparing these forces for operational missions, launching and recovering these forces, and eventually returning forces to the MAJCOMs. Theater Air Control Systems control employment of forces during these missions.

Aircraft

Main article: List of military aircraft of the United States The United States Air Force has roughly over 7,500 Aircraft commissioned as of 2004.[http://www.wikipedia.org/wiki/United_States_Air_Force#sources (1)] It currently employs a designation and naming system to identify all aircraft type with distinct names. Until 1962, both the Army and Air Force maintained one system, while the US Navy maintained a separate system. In 1962, these were unified into a single system heavily reflecting the Army/Air Force method. For more complete information on the workings of this system, refer to United States Department of Defense Aerospace Vehicle Designations.

Gallery of images

This is a gallery of the most well known USAF aircraft Image:Usaf.b52.750pix.jpg|B-52 Stratofortress Image:B1s.jpg|B-1 Lancer Image:Usaf.b2.spirit.750pix.jpg|B-2 Spirit ("Stealth Bomber") Image:Thunderbolt.a10.fairford.arp.jpg|A-10 Thunderbolt II ("Warthog") Image:F-16 CJ Fighting Falcon.jpg|F-16 Fighting Falcon Image:F-117 Nighthawk flight.jpg|F-117 Nighthawk ("Stealth Fighter") Image:F-15 takeoff.jpg|F-15 Eagle Image:Usaf.c130.750pix.jpg|C-130 Hercules

Uniform

The current U.S. Air Force uniform, adopted in 1993 and standardized in 1995, consists of a three-button, pocketless coat, similar to that of a men's "sport jacket" (with silver "U.S." pins on the lapels), matching trousers, and either a service cap or garrison cap, all in "Air Force Blue." This is worn with a light blue shirt and necktie in the same color as the coat and trousers. Enlisted members wear sleeve insignia on both the jacket and shirt, while officers wear metal rank insignia pinned onto the coat, and Air Force Blue slide-on loops on the shirt. Air Force personnel assigned to honor guard duties wear, for dress occasions, a modified version of the standard service dress uniform, but with silver trim on the sleeves and trousers, with the addition of medals, sword belt, and a silver shoulder cord. Between 1993 and 1995, officers had Navy/Coast Guard-style rank rings on the coat, but this was replaced with sewn-on epaulets with the rank insignia, with "welts" in the same color as the coat being worn on the sleeves, a distinctive item adopted from the U.S. Army. Prior to 1993, all Air Force personnel wore Air Force Blue uniforms nearly identical in appearance to that of the U.S. Army, which in fact, influence the current uniform regulations of the Army when it replaced its WWII/Korean-era olive drab uniforms with the modern-day "Army Green" uniforms of the Cold War era. For combat and work duty, ground crews wear standard battle dress uniform, which are currently being phased out in favor of an Air Force version of the Marine's MARPAT uniform, while pilots and air crews wear olive green or tan one-piece flight suits made of nomex for fire protection. Women's uniforms, which has changed little since its introduction in the late 1950's, generally is identical in appearance to that of the uniforms worn by women officers in the U.S. Army.

Common badges

:See also: Military badges of the United States
- Pilot Badge
- Navigator Badge
- Aircrew Badge
- Flight Surgeon Badge
- Occupational Badge
- Medical Badge
- Religious Pin
- Security Police badge

Rank Structure

Trivia

The US Air Force conducted the Project Blue Book investigation into UFOs and alien encounters.See UFO for data on the US Air Force Project Blue Book. Recently, given the USAF's attention to space exploration, rumors have stirred of a possible name change for the entire service, to United States Aerospace Force. However, this has yet to receive serious attention.

Sources

[http://www.britannica.com 2004 Encyclopædia Britannica]

External links

- [http://www.af.mil/ Official USAF website]
- [http://www.airforce.com Official USAF Recruiting site]
- [http://www.airforcehistory.hq.af.mil/ USAF History Support Office]
- [http://www.au.af.mil/au/afhra/ Air Force Historical Research Agency]
- [http://www.wpafb.af.mil/museum/ National Museum of the United States Air Force]
- [http://www.globalsecurity.org/military/facility/afb.htm US military air bases] by GlobalSecurity.org
- [http://www.globalsecurity.org/military/agency/usaf/ USAF organization and units] by GlobalSecurity.org
- [http://www.scramble.nl/usaf.htm USAF Order of Battle] at Scramble
- [http://www.amazon.com/exec/obidos/tg/detail/-/1411636384/qid=1123217876/sr=8-1/ref=pd_bbs_sbs_1/002-7742000-2043231?v=glance&s=books&n=507846 United States Air Force: History and Guide to Resources]
- Category:Air forces ja:アメリカ空軍

USN

The United States Navy (USN) is the branch of the United States armed forces responsible for naval operations. The U.S. Navy consists of 281 ships and over 4,000 aircraft. It has over half a million men and women on active or ready reserve duty. The United States Navy traces its origins to the Continental Navy, which the Continental Congress established during the American Revolutionary War. The United States Constitution, ratified in 1789, empowered Congress "to provide and maintain a navy." Acting on this authority, Congress ordered the construction and manning of six frigates; one of the original six, USS Constitution, familiarly known as "Old Ironsides," survives to this day. The War Department administered naval affairs from that year until Congress established the Department of the Navy on April 30, 1798. The Navy became part of the Department of Defense upon its establishment in 1947.

History of the Navy

Main article: History of the United States Navy History of the United States Navy The Continental Navy was established in Philadelphia by the Continental Congress on October 13, 1775, which authorized the procurement, fitting out, manning, and dispatch of two armed vessels to search for munitions ships supplying the British Army in America. The legislation also established a Naval Committee to supervise the work. The Continental Navy operated some 50 ships over the course of the American Revolutionary War, but no more than about 20 at one time. After the war, Congress sold the surviving ships and released the seamen and officers. Congress ordered the construction and manning of six frigates on March 27, 1794, and three years later welcomed into service the first three: USS United States, Constellation and Constitution. The frigates became famous in the War of 1812, where they unexpectedly defeated British Royal Navy forces several times. During the American Civil War, the Navy was an innovator in the use of ironclad warships, but after the war slipped into obsolescence. A modernization program beginning in the 1880s brought the U.S. into the first rank of the world's navies by the beginning of the 20th century. 20th century (middle) and USS Annapolis (SSN 760) (front)]] The Navy saw little action during World War I, but grew into a formidable force in the years before World War II. Japan unsuccessfully attempted to allay this strategic threat with a late-1941 surprise attack on Pearl Harbor. During the next three years, the U.S. Navy grew into the most powerful in the world. It is widely accepted that currently the United States Navy remains the most powerful in the world.

Organization

The Navy is administered by the Department of the Navy, led by the Secretary of the Navy (SECNAV). The senior naval officer, the Chief of Naval Operations (CNO), is the four-star admiral immediately under the Secretary of the Navy. The Secretary of the Navy and Chief of Naval Operations are responsible for organizing, recruiting, training, and equipping the Navy so the Navy is ready for operation under the command of the Unified Combatant Commanders. (Also see United States Armed Forces Organization.) President | SECDEF | ------------------- | | SECNAV | | | CNO Unified Combatant Commanders | | -------------------- | | | | Shore establishment Operating Forces (including fleets)

Fleets

The two main fleets are the Pacific Fleet and the Atlantic Fleet. Under these two organizations fall the numbered fleets.
- 1st Fleet - no longer active
- 2nd Fleet – Atlantic Ocean — Flagship Iwo Jima, Norfolk, Virginia
- 3rd Fleet – Eastern and Northern Pacific Ocean — Flagship Coronado, San Diego, California (In peacetime the Third Fleet has no ARG and the carriers in the area are either on their way to the Seventh Fleet or conducting training cruises, after an overhaul for example.)
- 4th Fleet – Disbanded.
- 5th Fleet – Middle East — Headquartered at Manama, Bahrain
- 6th Fleet – Mediterranean Sea — Flagship Mount Whitney, Gaeta, Italy
- 7th Fleet – Western Pacific and Indian Ocean — Flagship Blue Ridge, Yokosuka, Japan

Shore commands

In addition to afloat fleets, the Navy maintains several "Naval Forces Commands" which operate naval shore facilities and serve as liaison units to local ground forces of the Air Force and Army. Such commands are answerable to a Fleet Commander as the shore component of the afloat command. During times of war, all Naval Forces Commands augment to become task forces of a primary fleet. Some of the larger Naval Forces Commands include:
- Commander Naval Forces Korea (CNFK)
- Commander Naval Forces Marianas (CNFM)
- Command Naval Forces Japan (CNFJ)

Staff corps

In addition to the regular line commands of the navy, several staff corps are also maintained which augment the line community and whose personnel are assigned to both line and staff commands. The current staff corps of the United States Navy are as follows:
- Navy Supply Corps
- Navy Medical Corps
- Navy Medical Service Corps
- Navy Nurse Corps
- Navy Chaplains Corps
- Navy Civil Engineer Corps (Seabees)
- Navy Judge Advocate General (JAG)

Weapons

Ships

Main article: U.S. Navy ships See also List of ships of the United States Navy for a more complete listing of ships past and present. The names of commissioned ships of the U.S. Navy start with USS, meaning 'United States Ship'. Non-commissioned, civilian-manned vessels of the U.S. Navy have names that begin with USNS, standing for 'United States Naval Ship'. A letter-based hull classification symbol is used to designate a vessel's type. The names of ships are selected by the Secretary of the Navy. The names are usually those of U.S. states, cities, towns, important people, famous battles, fish, and ideals. The U.S. Navy pioneered the use of nuclear reactors aboard naval vessels; today, they power most U.S. aircraft carriers and submarines. See United States Naval reactor. As of January 2004, a relatively small number of ship classes accounted for the bulk of the U.S. naval fleet. These include:

Aircraft carriers

United States Naval reactor on November 3, 2003. Approximately fifty aircraft can be counted on deck.]] Aircraft carriers are the major strategic arm of the Navy. They put U.S. air power within reach of most land-based military power. The US Navy's carriers are much larger and more powerful than those of the rest of the world. See also: List of aircraft carriers of the United States Navy and List of escort aircraft carriers of the United States Navy. Modern aircraft carriers since CV-67 are typically named for living or dead politicians; previous aircraft carriers were named for battles and famous fighting ships of the Navy.
- Kitty Hawk class (1 ship)
- Enterprise — Norfolk, Virginia
- John F. Kennedy — Mayport Naval Station, Florida
- Nimitz class (9 ships, 1 under construction)
- USS Nimitz (CVN-68)
- USS Dwight D. Eisenhower (CVN-69)
- USS Carl Vinson (CVN-70)
- USS Theodore Roosevelt (CVN-71)
- USS Abraham Lincoln (CVN-72)
- USS George Washington (CVN-73)
- USS John C. Stennis (CVN-74)
- USS Harry S. Truman (CVN-75)
- USS Ronald Reagan (CVN-76)
- USS George H.W. Bush (CVN-77)

Amphibious assault ships

The largest of all amphibious warfare ships amphibious assault ships resemble small aircraft carriers; capable of V/STOL, STOVL, VTOL tiltrotor and rotary wing aircraft operations; contains a welldeck to support use of Landing Craft Air Cushion and other watercraft. Amphibious assault ships are typically named after World War II aircraft carriers, a name source kept over from the earliest ones, which were converted WWII carriers.
- Wasp class (7 ships)
- Tarawa class (4 ships active, 1 decommissioned)

Amphibious transport docks

Amphibious transports are warships that embark, transport, and land elements of a landing force for a variety of expeditionary warfare missions. Amphibious transport docks are named for cities, except for USS New York (LPD-21), which is named for the state of New York and USS Somerset (LPD-25), which is named for Somerset County, Pennsylvania.
- San Antonio class (3 launched, 2 under construction, 3 planned, 2 projected)
- Austin class (10 ships active, 1 Decommissioned, 1 converted to AGF)

Submarines

:Main article: Submarines in the United States Navy There are two major types of submarines, ballistic and attack. Ballistic subs have a single, strategic mission: carrying nuclear SLBMs. Attack submarines have several tactical missions, including sinking ships and subs, launching cruise missiles, and gathering intelligence. Sea attack submarines are typically named for cities; land attack submarines (Virginia and Ohio-class boats) are typically named for states. Earlier attack submarines were named for fish, while earlier ballistic missile submarines were named for "famous Americans" (although many of these were actually foreigners).
- Ohio class (18 in commission) — ballistic missile submarines, 4 to be converted into guided missile submarines
- Virginia class (1 in commission, 3 under construction, 2 on order) — attack submarines
- Seawolf class (3 in commission) — attack submarines
- Los Angeles Class (51 in commission) — attack submarines

Cruisers

Guided missile cruisers can conduct air warfare, surface warfare and undersea warfare. All modern cruisers are named for battles. Previous cruisers were either named for cities (until CG-12), the redesignated frigates were named for naval heroes (CG-15 to CG-35) or states (CG-36 to CG-42).
- Ticonderoga class (23 in commission) — first ships to carry the Aegis combat system

Destroyers

See also the List of destroyers of the United States Navy. All destroyers have been named for naval heroes since USS Bainbridge (DD-1).
- Arleigh Burke class (44 in commission as of June 2005) — first ship class with comprehensive design for stealth technology.

Frigates

Modern frigates mainly perform anti-submarine warfare and escort other ships. The U.S. Navy is gradually retiring its frigates; some of their jobs will be performed by the nascent littoral combat ship. [http://peoships.crane.navy.mil/lcs/] Named, like the destroyers, for naval heroes.
- Oliver Hazard Perry class (30 ships in commission)

Battleships

All U.S. battleships have been retired, although two Tomahawk-capable ships remain in "Inactive" Reserve. They are maintained in accordance with the National Defense Authorization Act of 1996. Current plans in the United States Navy call for keeping the battleships on the NVR until the naval surface fire support gun and missile development programs achieve operational capability, which is expected to occur sometime between 2003 and 2008. All battleships except USS Kearsarge (BB-5) were named for states.
- Iowa class

Early vessels

- USS Constitution — "Old Ironsides," oldest commissioned warship afloat
- USS Monitor — first US ironclad warship, also first rotating turret
- USS Merrimack — a wooden warship rebuilt by the Confederates as the ironclad CSS Virginia
- USS Alligator — the first submarine of the Civil War, but sunk while being towed during a storm.
- CSS Hunley — First submarine to sink a ship in a combat engagement, though it sunk in the aftermath as well. Built by the Confederates near the end of the Civil War. Sank USS Housatonic with a spar-mounted torpedo.

Naval aircraft

torpedo, 2003]]
- A-4 Skyhawk
- AV-8B Harrier II
- C-2 Greyhound
- E-2C Hawkeye
- E-6B Mercury
- EA-6B Prowler
- ES-3 Shadow
- FH-1 Phantom
- F-14 Tomcat
- F-15 Eagle
- F-16 Fighting Falcon
- F/A-18 Hornet
- F/A-18E/F Super Hornet
- EA-18G Growler
- F-35 Joint Strike Fighter
- H-3 Sea King
- CH-46 Sea Knight
- CH-53 Sea Stallion
- SH-2 Seasprite
- SH-60 Sea Hawk
- P-3C Orion see also Multimission Maritime Aircraft
- S-3B Viking
- V-22 Osprey
- T-6A Texan II
- T-45 Goshawk
- Aerial Common Sensor (no designation yet)

Harbor defense

The United States Navy has, in the last few years, greatly expanded its harbor defense forces in response to the War on Terrorism. The main components of Naval Harbor Defense include:
- Inshore Boat Units (IBUs)
- Mobile Inshore Undersea Warfare Units (MIUWUs)
- Special Boat Units (SBUs)

Special warfare

The Navy Seals are the U.S. Navy's primary special warfare units whose purpose is to engage in "special activities other than war". The Navy also maintains an EOD Corps (Explosive Ordnance Disposal) as well as a small corps of Surface Warfare personel known by the designator "Special Operations Underway".

Missiles, guns, equipment

- Trident missile
- Poseidon missile
- Tomahawk missile
- Polaris missile
- Naval Space Surveillance System
- CIWS

Submarine warfare and nuclear deterrence

The submarine has a long history in the USN. It began in the late 19th century, with the building of the SS-1, USS Holland. The boat was in service for 10 years and was a developmental and trials vessel for many systems on other early submarines. The submarine really came of age in World War I. The USN did not have a large part in this war, with its action mainly being confined to escorting convoys later in the war and sending a division of battleships to reinforce the British Grand Fleet. However, there were those in the USN submarine service who saw what the Germans had done with their U-boats and took careful note. Doctrine in the inter-war years emphasised the submarine as a scout for the battle fleet, and also extreme caution in command. Both these axioms were proven wrong after the attack on Pearl Harbor in December 1941. The submarine skippers of the fleet boats of World War II waged a very effective campaign against Japanese merchant vessels, doing to Japan what Germany failed to do to the United Kingdom. They were aggressive and effective, and operated far from the fleet. In addition to their commerce raiding role, submarines also proved valuable in air-sea rescue. There was many an American aircraft carrier pilot who owed his life to the valour of USN submarine crews, including future U.S. President George H. W. Bush.

Navy revolutions

After WWII, things continued along much the same path until the early 1950s. Then a revolution, that was to forever change the nature of the submarine arm occurred. That revolution was USS Nautilus. The Nautilus was the first nuclear-powered submarine. Up until that point, submarines had really been, at their most basic level, torpedo boats that happened to be able to go underwater. They had been tied to the surface by the need to charge their batteries using diesel engines relatively often. The nuclear power plant of the Nautilus meant that the boat could stay underwater for literally months at a time, the only limit in the end being the amount of food that the boat could carry. Another revolution in submarine warfare came with USS George Washington. Nuclear powered, like Nautilus, George Washington added strategic ballistic missiles to the mix. Earlier submarines had carried strategic missiles, but the boats had been diesel powered, and the missiles required the boat to surface in order to fire. The missiles were also cruise missiles, which were vulnerable to the defences of the day in a way that ballistic missiles were not. George Washington's missiles could be fired whilst the boat was submerged, meaning that it was far less likely to be detected before firing. The nuclear power of the boat also meant that, like Nautilus, George Washington's patrol length was only limited by the amount of food the boat could carry. Ballistic missile submarines, carrying Polaris missiles, eventually superseded all other strategic nuclear systems in the USN. Deterrent patrols continue to this day, although now with the Ohio class boats and Trident missiles. Trident missile]] Given the lack of large scale conventional naval warfare since 1945, with the USN's role being primarily that of power projection, the submarine service did not fire weapons in anger for very many years. The development of a new generation of cruise missiles changed that. The BGM-109 Tomahawk missile was developed to give naval vessels a long range land attack capability. Other than direct shore bombardment, and strikes by aircraft flying off carriers, the ability of naval vessels to influence warfare on land was limited. Now, instead of being limited to firing shells less than 20 miles inland from guns, any naval vessel fitted with the Tomahawk could hit targets up to 1,000 miles inland. The mainstay of the Tomahawk equipped vessels in the early days of the missile's deployment were the Iowa class battleships, and the submarine fleet. The Tomahawk was first used in combat on 17 January 1991, on the opening night of Operation Desert Storm. On that day, for the first time since the surrender of Japan in 1945, an American submarine fired in combat, when Tomahawks were launched by US boats in the eastern Mediterranean. Since then, the Tomahawk has become a staple of American campaigns. It has seen use in no less than three separate wars. It has also been exported to the United Kingdom, which has also fitted it to submarines. The Tomahawk has seen a change in the design of attack submarines. At first it was fired through torpedo tubes, but more recent US boats have been fitted with vertical launch systems to enable them to carry more of the weapons. In the early 21st century, the USN submarine fleet is made up entirely of nuclear powered vessels. It is the most powerful of its type in the world. However, there are those who worry that there are not enough boats in the fleet. As with other branches of the US military the budget cuts of the late 1980s and the early 1990s, as the Cold War ended, followed up by the War on Terrorism, have left little or no slack in the system. This point is illustrated by the fact that in 2003, for the first time since 1945, a US submarine made two back-to-back war patrols.

Major naval bases

- Complete list of US Naval facilities
- Norfolk, Virginia — The largest Naval base in the world, situated in southeastern Virginia. This is the main port on the Eastern Seaboard.
- Pearl Harbor, Hawaii — A deep water naval base and headquarters of the Pacific Fleet
- San Diego, California — A large complex of Navy bases, and the primary port for ships on the West Coast of the United States
- Naval Base Kitsap, Washington — Home base for Ohio Class nuclear missile submarines in the Pacific Ocean
- Naval Submarine Base Kings Bay, Georgia — Home base for Ohio Class nuclear missile submarines in the Atlantic Ocean
- Naval Station Mayport, Florida
- Naval Air Station Fallon, Nevada
- Guantanamo Bay — A small section on the south coast of Cuba is leased by the United States and used as a naval base.
- U.S. Fleet Activities Yokosuka, Japan. Largest overseas Naval facility.

Personnel

Commissioned officer

Commissioned officers in the Navy have paygrades from O-1 to O-10. Officers with superior performance may be promoted. Officers between O-1 and O-4 are called junior officers, O-5 and O-6 are called senior officers, and O-7 to O-10 are called flag officers. See U.S. Navy officer rank insignia for a complete list of paygrades and corresponding ranks. Commissioned officers belong to one of the following communities:
- Unrestricted line: Surface Warfare, Aviation Warfare, Submarine Warfare, Special Warfare, Nuclear
- Restricted line: Engineering Duty, Aerospace Engineering Duty, Aerospace Maintenance Duty, Cryptologic, Naval Intelligence, Public Affairs, Meteorology and Oceanography, Information Professional, Human Resource
- Staff Corps: Supply Corps, Medical Corps, Medical Service Corps, Dental Corps, Nurse Corps, Chaplain Corps, Civil Engineer Corps, Judge Advocate General Corps, Navy Band Corps The term "line" officer means someone who may command a warship or an aviation unit. It is a carryover from the 18th-century British tactic of employing warships in a "line" to take advantage of cannons on each side of the ship. The captains of such vessels commanded "ships of the line." Today, all Navy line officers wear a star on the sleeves of uniforms near the cuff braid that denotes rank. Staff officers wear different insignias. Note: Marine Corps officers, also part of the Department of the Navy, are all considered "line" officers because they are qualified as troop commanders in addition to their specialties. Commissioned officers originate from the United States Naval Academy, Navy Reserve Officer Training Corps (NROTC), Officer Candidate School (OCS), direct commission, and other commissioning programs (such as [https://www.sta-21.navy.mil/ Seaman to Admiral-21] and Limited Duty Officer programs).

Enlisted

Enlisted members of the Navy have paygrades from E-1 to E-9. Enlisted members with superior performance may be advanced in paygrade. Two notably significant advancements are Seaman to Petty Officer Third Class (E-3 to E-4) and Petty Officer First Class to Chief Petty Officer (E-6 to E-7). Advancement to Chief Petty Officer is especially significant, marked by a special initiation ceremony. See U.S. Navy enlisted rate insignia for a complete list of the paygrades. All new active-duty enlisted members receive basic training ("boot camp") at the Recruit Training Command in Great Lakes, Illinois. Those who have a contract for a specific rating continue onto "A" schools for training in the rating. Those who don't have a specific rating go into the fleet to learn on the job and later strike for a rating. Some members may go to additonal training in a "C" school either before a tour of duty, or after a tour of duty. A "C" school assigns a member a Navy Enlisted Classification code, or NEC, which shows that a sailor is able to perform a specific task requiring that NEC, such as NEC 2780 - Network Security Vulnerablity Technician. Enlisted members of paygrades E-4 and above are said to be "rated" and have a rating: an occupational specialty. As of June 2005, there are more than 50 ratings, including Boatswain's Mate, Quartermaster, Engineman, Damage Controlman, Electronics Technician, Information Systems Technician, Air Traffic Controller, Fire Control Technician, Gunner's Mate, Sonar Technician, Construction Mechanic, Hospital Corpsman, Yeoman, Disbursing Clerk, Culinary Specialist, Photographer's Mate, Musician, Master-at-Arms, Aviation Electronics Technician, and Cryptologic Technician. Some ratings have subspecialties acquired either through an initial "A" school for training (such as Cryptologic Technician Technical and Cryptologic Technician Collection) or through a separate "C" school (such as Aviation Electronics Technician Organizational and Aviation Electronics Technician Intermediate.)

Qualifications

Sailors prove they have mastered skills and deserve responsibilities by completing Personal Qualification Standards (PQS) tasks and examinations. Among the most important is the "warfare qualification," which denotes a journeyman level of capability in Aviation Warfare, Special Warfare, Surface Warfare, or Submarine Warfare. Many qualifications are denoted on a sailor's uniform with U.S. Navy badges and insignia.

Sea Warrior

Launched in 2003 as part of the Navy's [http://www.chinfo.navy.mil/navpalib/cno/proceedings.html Sea Power 21] transformation plan, Sea Warrior is intended to link the fleet's personnel processes (recruiting, training, and assigning) with acquisition processes (buying ships, aircraft, etc.) in a way that also improves each individual sailor's ability to guide his or her own career in a satisfying direction. The aim is to more efficiently muster the right number of sailors with the right skills and seniority at each ship, squadron, and duty station. Sea Warrior is led by the Chief of Naval Personnel[http://www.chinfo.navy.mil/navpalib/people/flags/biographies/hoewinggl.html], and the commander of the [https://www.cnet.navy.mil/netc/netc.html Naval Education and Training Command].

Naval culture

Navy sailors are trained in the core values of Honor, Courage, Commitment. Sailors cope with boredom on long cruises of six months to a year, and cherish their time in their home ports, as well as vacations at ports abroad.

Naval jack

Chief of Naval Personnel Chief of Naval Personnel Chief of Naval Personnel The naval jack of the United States is the First Navy Jack, first used during the American Revolutionary War. On May 31, 2002, Secretary of the Navy Gordon England directed all U.S. naval ships to fly the First Navy Jack for the duration of the War on Terrorism. Many ships chose to shift colors on September 11, 2002. The jack is flown from the bow of the ship and the ensign from the stern when the ship is moored or anchored. When underway, the ensign is flown from the main mast. The former naval jack was a blue field with 50 white stars, identical to the canton of the ensign, both in appearance and size. A jack of similar design was first used in 1794, though with 13 stars arranged in a 3–2–3–2–3 pattern.

Naval jargon

Main article: Military slang A distinct jargon has developed among sailors over the course of the last four centuries. Naval jargon is spoken by American sailors as a normal part of their daily speech. There are three distinct components of Naval jargon:
- Words that are unique to sailing and have no use in standard English, such as yardarm, bow, and stern.
- Archaic English that remains common in naval jargon, such as "aye" (the common English word for "Yes" until the 16th century), "Fo'c'sle" (from Fore Castle), and Bo'sun (from "Boat Swain", swain being Middle English for a young man or a servant).
- Modern jargon, such as "Bird" to refer to missiles, or 1MC. See U.S. Navy slang for more information. Also see Covey Crump.
Notable members of the U.S. Navy
Covey Crump Officers
- Vern Clark — former Chief of Naval Operations
- Robert Dennison — retired admiral, presidential aide
- George Dewey — Hero of the Battle of Manila Bay in Spanish-American War; first and only Admiral of the Navy
- David Farragut — American Civil War Admiral, first officer to become an Admiral in the U.S. Navy
- Wilson Flagg — retired Admiral, killed in Sept 11 attack
- William Halsey, Jr. — Third Fleet Commander, won battles off Guadalcanal and the Solomons; attained rank of Fleet Admiral (5 stars)
- Esek Hopkins — first Commander in Chief of the navy during the Revolutionary War
- Grace Hopper — early computing pioneer, attained the rank of Rear Admiral in the Navy Reserve
- John Paul Jones — commander during the American Revolutionary War, considered to be the founder of the American Naval tradition
- Ernest King — Fleet Admiral; former Chief of Naval Operations
- William D. Leahy — first Fleet Admiral; first head of the Chiefs of Staff (before the post was renamed Chairman of the Joint Chiefs of Staff); former Chief of Naval Operations; former Governor of Puerto Rico; former U.S. ambassador to France
- Richard Marcinko — author, founder and commander of SEAL Team Six
- Chester Nimitz — Fleet Admiral; former Chief of Naval Operations; signed for the U.S. when Japan formally surrendered onboard the USS Missouri, class of carriers named after him
- Matthew Perry — Commodore who forced the opening of Japan
- Eli Thomas Reich — Vice Admiral, only submariner to sink a Japanese battleship unaided during WW2.
- Hyman G. Rickover — Admiral, "Father of the Nuclear Navy"
- Raymond A. Spruance -Commander at the Battle of Midway, led the Fifth Fleet in the Central Pacific and Okinawa. Rebuilt the Naval War College after World War II Politicians
- George H. W. Bush — former U.S. President; youngest Naval Aviator in World War II; former director of the Central Intelligence Agency
- Jimmy Carter — former U.S. President; Cold War submariner and Peace Prize laureate
- Glenn Robert Davis — former member of the US House of Representatives
- Gerald Ford — former U.S. President; served aboard carrier during World War II
- Lyndon B. Johnson — former U.S. President; worked as a bomb observer with the Army during World War II
- John F. Kennedy — former U.S. President; decorated PT Boat commander in World War II
- John Kerry — junior U.S. Senator and 2004 Democratic presidential candidate; swift boat commander during the Vietnam War
- John McCain — senior U.S. Senator from Arizona and Republican presidential primary candidate in 2000; former naval aviator and POW
- Richard M. Nixon — former U.S. President; supply officer in World War II Astronauts
- Neil Armstrong — astronaut, first man on the moon
- James Lovell — naval aviator, astronaut, pilot of first lunar orbit flight (Apollo 8) and commander of Apollo 13 mission
- Alan Shepard — naval aviator, first American in space (Mercury-Redstone 3) and Apollo 14 commander
- John Young — naval aviator and Gemini, Apollo, and Space Shuttle astronaut Others
- Bill Cosby — actor, comedian and educational philanthropist
- Lenny Bruce — American comedian
- Robert A. Heinlein — science fiction author
- L. Ron Hubbard — science fiction author and founder of the Church of Scientology
- David Robinson — former NBA star (San Antonio Spurs), commonly nicknamed "The Admiral"
- Bill Sharman — basketball Hall of Famer
- Roger Staubach — football hall of Famer, Vietnam veteran
- Jesse Ventura — actor, professional wrestler, Governor of Minnesota
See also

- Continental Navy
- Electronics Technician rating
- Information Systems Technician rating
- Seabees, US Navy Construction Battalions, hence CBs
- Navy SEAL, special forces
- BUPERS
- Fleet Week
- WAVES
- Ship-Submarine recycling program
- U.S. Navy officer rank insignia
- U.S. Navy enlisted rate insignia
- Unrestricted Line Officer
- Restricted Line Officer
- Limited Duty Officer
- Awards and decorations of the United States military
- Military badges of the United States
- United States armed forces
- United States Secretary of the Navy
- Comparative military ranks
- List of United States Navy bases
- List of ships of the United States Navy
- List of active Navy ships, sorted by homeport
- List of units of the United States Navy
- U.S. Navy munitions
- Navy Band
- Eternal Father Strong to Save (the U.S. Navy hymn)
References

- [http://www.navy.mil Official U.S. Navy Website]
- [http://www.hq.navy.mil/ Department of the Navy Website]
- [https://www.nko.navy.mil Navy Knowledge Online]
- [http://www.seawarrior.navy.mil Sea Warrior]
- [http://www.nosi.org Naval Open Source Intelligence (NOSI)] — a digital library of world naval operational news, curated from open source intelligence, and intended to serve as a source of continuing education on naval and military affairs
- [http://www.microworks.net/pacific/ U.S. Navy in WW II] — a web site devoted to the U.S. navy in the Pacific theater during World War II
External links

- [http://www.navsource.org NavSource Naval History - Photographic History Of The U.S. Navy ] — a source of thousands of photographs of US Navy ships.
- [http://www.maritimequest.com/warship_directory/us_navy_pages/us_battleship_list.htm Maritimequest US Battleship photo gallery]
- [http://www.ibiblio.org/hyperwar/USN/ The Offical Chronology of the US Navy In World War II]
- Category:Navies ja:アメリカ海軍

X-plane

:This article is about experimental aircraft. For the flight simulator, see X-Plane. X-Plane.]] X-Plane] X-Plane] X-Plane] X-Plane] The X-planes are a series of experimental United States aircraft (and some rockets) used for testing of new technologies and usually kept highly secret during development. The first of these, the Bell X-1, became well-known as the first plane to break the sound barrier, which it did in 1947. Later X-planes yielded important research results, but only the North American X-15 rocket plane of the early 1960s achieved comparable fame. X-planes 7 through 12 were actually missiles, and some other vehicles were unpiloted. Most X-planes are not expected to ever go into full-scale production, and usually only a few are produced. One exception is the Lockheed Martin X-35, which competed against the Boeing X-32 to become the Joint Strike Fighter. X-plane projects are still underway as of 2004.

Types of X-planes

- Bell X-1 - rocket plane, first supersonic flight
- Bell X-2 - swept wing supersonic rocket plane
- Douglas X-3 Stiletto - needle-like supersonic aircraft
- Northrop X-4 Bantam - semi-tailless aircraft
- Bell X-5 - in-flight wing sweeping aircraft
- Convair X-6 - nuclear-powered aircraft
- Lockheed X-7 - ramjet missile
- Aerojet General X-8 - sounding rocket
- Bell X-9 Shrike - surface-to-air guided missile prototype
- North American X-10 - surface-to-surface missile demonstrator
- Convair X-11 - testbed for Atlas rocket
- Convair X-12 - testbed for Atlas rocket
- Ryan X-13 Vertijet - VTOL jet aircraft
- Bell X-14 - VTOL aircraft
- North American X-15 - rocket plane
- Bell X-16 - high altitude reconnaissance aircraft
- Lockheed X-17 - rocket test of high-mach reentry
- Hiller X-18 - tiltwing STOVL transport
- Curtiss-Wright X-19 - tiltrotor VTOL transport
- Boeing X-20 Dyna-Soar - early spaceplane
- Northrop X-21 - wings with laminar flow control
- Bell X-22 - tiltrotor V/STOL transport
- Martin-Marietta X-23 - lifting body
- Martin-Marietta X-24 - lifting body
- Bensen X-25 - autogyro
- Schweizer X-26 Frigate - sailplane
- Lockheed X-27 - lightweight fighter
- Pereira X-28 Sea Skimmer - inexpensive single-seat flying boat
- Grumman X-29 - fighter with forward-swept wings
- Rockwell X-30 - spaceplane ("National Aerospace Plane" or "NASP")
- Rockwell-MBB X-31 - thrust vectoring fighter
- Boeing X-32 - Joint Strike Fighter prototype
- Lockheed Martin X-33 - reusable launch vehicle demonstrator ("VentureStar")
- Orbital Sciences X-34 - unmanned spaceplane testbed
- Lockheed Martin X-35 - Joint Strike Fighter prototype, now F-35
- McDonnell Douglas X-36 - tailless fighter
- Boeing X-37 - spaceplane ("Future-X")
- X-38 - lifting body demonstrators for the Crew Return Vehicle
- X-39 - unused designation reserved for Future Aircraft Technology Enhancements programme
- Boeing X-40 - scaled-down prototype of X-37
- X-41 Common Aero Vehicle - classified military spaceplane
- X-42 Pop-Up Upper Stage - classified liquid-fueled rocket
- Boeing X-43 - hypersonic scramjet test ("Hyper-X")
- Lockheed Martin X-44 MANTA - tailless fighter
- Boeing X-45 - UCAV demonstrator
- Boeing X-46 - UCAV demonstrator
- Northrop Grumman X-47 Pegasus - UCAV demonstrator
- Boeing X-48 - blended wing body flying wing
- Sikorsky Piasecki X-49 - thrust vectoring helicopter
- Boeing X-50 - Canard Rotor/Wing demonstrator (airplane/helicopter hybrid)

Fictional X-series planes

Many movies and series have featured X planes, both feasible and currently infeasible planes. For instance, Stargate episodes mention X-301, X-302, and X-303 spacecraft.

Reference

- Jay Miller, The X-Planes: X-1 to X-45 (Motorbooks International, 2001)

External link

- [http://www.centennialofflight.gov/essay/Evolution_of_Technology/early_X_planes/Tech27.htm Early X-planes]
- [http://history.nasa.gov/monograph31.pdf American X-Vehicles: An Inventory X-1 to X-50, SP-2000-4531 - June 2003; NASA online PDF Monograph] Category:Experimental aircraft

Experimental aircraft

An experimental aircraft is an aircraft that has not yet been fully proven in flight. Often, this implies that new aerospace technologies are being tested on the aircraft, though the label is more broad.

Civilian certification

In the eyes of the United States Federal Aviation Administration, an Experimental Aircraft is not constructed by a licensed aircraft manufacturer. Instead, at least 51% of the airframe is constructed by a private individual; the remaining percentage is often purchased as a "quick-build" kit consisting of prefabricated components. This category of aircraft can be built and flown by any licensed pilot, although an FAA examiner must certify the aircraft for flight. Most nations' aviation regulations require new designs and amateur-built aircraft to be physically marked as experimental, and extra flight testing is usually required before passengers (who are not pilots themselves) can be carried. At least 25,000 of these homebuilt aircraft exist in the U.S. alone, though many are based on conventional designs and experimental only by name. Homebuilt aircraft are built from materials in one of four categories: rag and tube, metal, wood, or composite materials (fiberglass, carbon fiber, etc.). The first category, describes a building method where the aircraft's superstructure is built using welded steel or bolted aluminum tube covered with Dacron fabric. This fabric can be painted to stiffen it. The second category, metal, describes the common all aluminum aircraft. Examples of this kind of aircraft include the Vans RV series of 1 & 2 place kits. Finally, the most recent addition to the fleet is made from composites. This category is notable for its designs employing body curvature and light weight which would be impossible with the other materials. Instead of building experimental aircraft from kits, it's also possible to build from plans. The builder needs to procure all raw material him/herself. An example of a plans built aircraft is this [http://ibis.experimentals.de IBIS experimental aircraft project.]

Experimental aircraft culture

In the United States, the FAA's Experimental Aircraft designation is supported by the Experimental Aircraft Association. The largest airshow in the world is the EAA's annual AirVenture airshow in Oshkosh, Wisconsin, which takes place in late July and early August. Other annual events are the Sun N' Fun Fly-In, which occurs in the early spring in Lakeland, Florida, and the Northwest EAA Fly-In in Arlington, Washington. These events are called a "Fly-In" as many people fly their homebuilts and other aircraft into the airport hosting the show, often camping there for the duration. Both events last a week. Takeoffs and landings at these shows number in the thousands.

External links

- [http://www.eaa.org/ Experimental Aircraft Association] Category:Experimental aircraft

Bell X-1

__NOTOC__ The Bell X-1 was the first aircraft to exceed the speed of sound in controlled, level flight. It was the first of the so called X-planes, a series of aircraft designated for testing of new technologies and usually kept highly secret. X-plane On October 14, 1947, Charles "Chuck" Yeager of the United States Air Force flew this aircraft, one that he had named 'Glamorous Glennis'. The rocket-powered aircraft was launched from the belly of a specially modified B-29 and glided to a landing on a runway. The German pilot Hans Guido Mutke claimed to be the first person to break the sound barrier, on April 9, 1945 in a Messerschmitt Me 262, but this claim is disputed. Many also contend that George Welch broke the barrier on October 1, 1947 in his XP-86 Sabre, just two weeks before the X-1.

History

Beginning in 1946, two XS -1 (for "extra sonic", later X-1) experimental research aircraft conducted pioneering tests at Muroc Army Air Field (now Edwards Air Force Base) in California to obtain flight data on conditions in the transonic speed range. These early tests culminated in the first piloted flight faster than Mach 1.0, the speed of sound. XS-1 flight number 50 is the first one where the X-1 recorded supersonic flight, at Mach 1.06 peak speed; however, Yeager and many other personnel record the possibility that Flight #49 (also with Yeager piloting), which reached a top recorded speed of Mach 0.997, may have in fact passed the Sound Barrier. Edwards Air Force Base The XS-1 was the first high-speed aircraft built purely for aviation research purposes. The model was never intended for production. She was designed largely in accordance with specifications provided by the National Advisory Committee for Aeronautics (NACA) (now National Aeronautics and Space Administration), paid for by the Army Air Forces, and built by Bell Aircraft Inc. The XS-1 #2 (serial number 46-063) was flight tested by the NACA to provide design data for later production high-performance aircraft. While her basic form was patterned on a .50 cal bullet, it is not widely known the X-1 owes a great deal of its design to the Miles M-52, a British jet powered design dating back to 1942. The M-52 design was handed to the Americans during WWII as part of what was supposed to have been a technology sharing agreement (although the British complained that there was no technical reciprocation on the part of the Americans once they got hold of the M-52 plans). The M-52's "all-flying" tail design solved some problems with the X-1 concerning stability as the craft approached the sound barrier. The research techniques used in the X-1 program became the pattern for all subsequent X-craft projects. The NACA X-1 procedures and personnel also helped lay the foundation of America's space program in the 1960s. The X-1 project defined and solidified the post-war cooperative union between U.S. military needs, industrial capabilities, and research facilities. The flight data collected by the NACA in the X-1 tests then provided a basis for American aviation supremacy in the latter half of the 20th century. As a result of the X-1's initial supersonic flight, the National Aviation Association voted its 1948 Collier Trophy to be shared by the three main participants in the program. Honored at the White House by President Truman were Larry Bell for Bell Aircraft, Captain Yeager for piloting the flights, and John Stack of NACA for the NACA contributions.

Aircraft serial numbers

- X-1 (XS-1)
- #1 - 46-062 - Glamorous Glennis, 82 flights, on display National Air and Space Museum, Washington D.C.
- #2 - 46-063, 74 flights, converted to X-1E.
- #3 - 46-064, 1 flight, burned on ground November 9, 1951.
- X-1A - 48-1384, 26 flights, lost in explosion August 8,

X-15

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