A hangar is a building or structure designed to hold aircraft or spacecraft. Hangars are built of metal, wood, or concrete. The word hangar comes from Middle French hanghart ("enclosure near a house"), of Germanic origin, from Frankish *haimgard ("home-enclosure", "fence around a group of houses"), from *haim ("home, village, hamlet") and gard ("yard"). The term, gard, comes from the Old Norse garðr ("enclosure, garden").
Hangars are used for protection from the weather, direct sunlight and for maintenance, repair, manufacture, assembly and storage of aircraft.
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The Wright brothers stored and repaired their aircraft in a wooden hangar constructed in 1902 at Kill Devil Hills in North Carolina for their glider. After completing design and construction of the Wright Flyer in Ohio, the brothers returned to Kill Devil Hills only to find their hangar damaged. They repaired the structure and constructed a new workshop while they waited for the Flyer to be shipped.
Carl Richard Nyberg used a hangar to store his 1908 Flugan (fly) in the early 20th century and in 1909, Louis Bleriot crash-landed on a northern French farm in Les Baraques (between Sangatte and Calais) and rolled his monoplane into the farmer's cattle pen. Bleriot was in a race to be the first man to cross the English Channel in a heavier-than-air aircraft, and he and set up his headquarters in the unused shed. In Britain, the earliest aircraft hangars were known as aeroplane sheds, and the oldest survivors of these are at Larkhill, Wiltshire. These were built in 1910 for the Bristol School of Flying and are now Grade II* Listed buildings. British aviation pioneer Alliott Verdon Roe built one of the first aeroplane sheds in 1907 at Brooklands, Surrey and full-size replicas of this and the 1908 Roe biplane are on display at Brooklands Museum.
As aviation became established in Britain before World War I, standard designs of hangar gradually appeared with military types too such as the Bessonneau hangar and the side-opening aeroplane shed of 1913, both of which were soon adopted by the Royal Flying Corps. Examples of the latter survive at Farnborough, Filton and Montrose airfields. During World War I, other standard designs included the RFC General Service Flight Shed and the Admiralty F-Type of 1916, the General Service Shed (featuring the characteristic Belfast-truss roof and built-in various sizes) and the Handley Page aeroplane shed (1918).
Sheds built for rigid airships survive at Moffett Field, California; Akron, Ohio; Weeksville, North Carolina; Lakehurst, New Jersey; Santa Cruz Air Force Base in Brazil; and Cardington, Bedfordshire. Steel rigid airship hangars are some of the largest in the world.
Hangar 1, Lakehurst, is located at Naval Air Engineering Station Lakehurst (formerly Naval Air Station Lakehurst), New Jersey. The structure was completed in 1921 and is typical of airship hangar designs of World War I. The site is best known for the Hindenburg disaster, when on May 6, 1937, the German airship Hindenburg crashed and burned while landing. Hangar No.1 at Lakehurst was used to build and store the American USS Shenandoah. The hangar also provided service and storage for the airships USS Los Angeles, Akron, Macon, as well as the Graf Zeppelin and the Hindenburg.
The largest hangars ever built include the Goodyear Airdock measuring 1,175x325x211 feet [1] and Hangar One (Mountain View, California) measuring 1,133 ft × 308 ft × 198 ft (345 m × 94 m × 60 m). The Goodyear Airdock, is in Akron, Ohio and the structure was completed on November 25, 1929. The Airdock was used for the construction of the USS Akron and her sister ship, the USS Macon.
Hangar One at Moffett Federal Field (formerly Naval Air Station Moffett Field), is located in Mountain View, California. The structure was completed in 1931. It housed the USS Macon.
The U.S. Navy established more airship operations during WWII. As part of this, ten "lighter-than-air" (LTA) bases across the United States were built as part of the coastal defence plan; a total of 17 hangars were built. Hangars at these bases are some of the world's largest freestanding timber structures. [2] Bases with wooden hangars included: the Naval Air Stations at South Weymouth, Massachusetts (1 hangar); Lakehurst, New Jersey (2); Weeksville, North Carolina (1); Glynco, Georgia (2); Richmond, Florida (3); Houma, Louisiana (1); Hitchcock, Texas (1); Tustin (Santa Ana), California (2); Moffett Field, California (2) and Tillamook, Oregon (2). Of the seventeen, only seven remain, Moffett Federal Field, (former NAS Moffett Field), California (2); former Tustin, California (former NAS Santa Ana and MCAS Tustin), California (2); Tillamook Air Museum/Tillamook Airport (former NAS Tillamook), Oregon (1) and Joint Base McGuire-Dix-Lakehurst/Naval Support Activity Lakehurst (former NAS Lakehurst), New Jersey (2). [3]
A hangar for Cargolifter was built at Brand-Briesen Airfield 1,180 ft (360 m) long, 705 ft (215 m) wide and 348 ft (106 m) high and is a free standing steel-dome "barrel-bowl" construction large enough to fit the Eiffel Tower on its side. The company went into insolvency and in June 2003, the facilities were sold off and the airship hangar was converted to a 'tropical paradise'-themed indoor holiday resort called Tropical Islands, which opened in 2004.
An alternative to the fixed hangar is a portable shelter that can be used for aircraft storage and maintenance. Portable fabric structures can be built up to 215 ft (66 m) wide, 100 ft (30 m) high and any length. They are able to accommodate several aircraft and can be increased in size and even relocated when necessary.[ citation needed ]
Hangars need special structures to be built. The width of the doors have to be large; this includes the aircraft entrance. The bigger the aircraft to be introduced, the more complex a structure is needed. According to the span of the hangar, sizes can be classified thus:
Size | Span (meters) |
---|---|
S | Less than 30 m |
M | 30–60 m |
L | 60–90 m |
XL | 90–120 m |
XXL | More than 120 m |
XXL hangars are built for the largest aircraft in the world like the Airbus A380, Boeing 747 and the Antonov 225, which are the most complex to erect. [4]
Hangars are usually regulated by the building codes in the countries and jurisdictions and airports where they reside. In August 2014, the American FAA proposed legislation of how a hangar can be used on airfields that receive government funding. The definition of allowed activities included final assembly of aircraft. [5]
Airship hangars or airship sheds are generally larger than conventional aircraft hangars, particularly in height. Most early airships used hydrogen gas to provide them with sufficient buoyancy for flight, so their hangars had to provide protection from stray sparks to keep the gas from exploding. Hangars that held several airships were at risk from chain-reaction explosions. For this reason, most hangars for hydrogen-based airships were built to house only one or two such craft. During the "Golden Age" of airship travel from 1900, mooring masts and sheds were constructed to build and house airships. The British government built a shed in Karachi for the R101, the Brazilian government built one in Rio de Janeiro, the Hangar do Zeppelin for the German Zeppelins, and the U.S. government constructed Moffett Field, Mountain View, California and Lakehurst Naval Air Station, Lakehurst, New Jersey.
Many warships carry aircraft and will often have hangars for storage and maintenance. Such hangars may be situated adjacent to the flight deck on cruisers, destroyers and frigates or underneath the flight deck with elevators to lift the aircraft on aircraft carriers and amphibious assault ships. On some vessels where space is short the hangar and flight deck share the same space, with the hangar stowing away for flight operations.
A hangar home[ citation needed ] is a residence that includes a hangar attached or integrated into the house, where the owner is able to park their privately owned aircraft. Hangar Homes are usually found in residential airparks.
An airship, dirigible balloon or dirigible is a type of aerostat (lighter-than-air) aircraft that can navigate through the air flying under its own power. Aerostats use buoyancy from a lifting gas that is less dense than the surrounding air to achieve the lift needed to stay airborne.
USS Akron (ZRS-4) was a helium-filled rigid airship of the U.S. Navy, the lead ship of her class, which operated between September 1931 and April 1933. It was the world's first purpose-built flying aircraft carrier, carrying F9C Sparrowhawk fighter planes, which could be launched and recovered while it was in flight. With an overall length of 785 ft (239 m), Akron and her sister ship Macon were among the largest flying objects ever built. Although LZ 129 Hindenburg and LZ 130 Graf Zeppelin II were some 18 ft (5.5 m) longer and slightly more voluminous, the two German airships were filled with hydrogen, and so the two US Navy craft still hold the world record for the largest helium-filled airships.
Moffett Federal Airfield, also known as Moffett Field, is a joint civil-military airport located in an unincorporated part of Santa Clara County, California, United States, between northern Mountain View and northern Sunnyvale. On November 10, 2014, NASA announced that it would be leasing 1,000 acres (400 ha) of the airfield property to Google for 60 years.
USS Shenandoah was the first of four United States Navy rigid airships. It was constructed during 1922–1923 at Lakehurst Naval Air Station, and first flew in September 1923. It developed the U.S. Navy's experience with rigid airships and made the first crossing of North America by airship. On the 57th flight, Shenandoah was destroyed in a squall line over Ohio in September 1925.
USS Los Angeles was a rigid airship, designated ZR-3, which was built in 1923–1924 by the Zeppelin company in Friedrichshafen, Germany, as war reparations. She was delivered to the United States Navy in October 1924 and after being used mainly for experimental work, particularly in the development of the American parasite fighter program, was decommissioned in 1932.
USS Macon (ZRS-5) was a rigid airship built and operated by the United States Navy for scouting and served as a "flying aircraft carrier", carrying up to five single-seat Curtiss F9C Sparrowhawk parasite biplanes for scouting or two-seat Fleet N2Y-1s for training. In service for less than two years, the Macon was damaged in a storm and lost off California's Big Sur coast in February 1935, though most of the crew were saved. The wreckage is listed as the USS Macon Airship Remains on the U.S. National Register of Historic Places.
Tillamook Air Museum is an aviation museum south of Tillamook, Oregon in the United States. The museum is located at a former U.S. Navy Air Station and housed in a former blimp hangar, known as "Hangar B", which is the largest clear-span wooden structure in the world.
Lakehurst Maxfield Field, formerly known as Naval Air Engineering Station Lakehurst, is the naval component of Joint Base McGuire–Dix–Lakehurst, a United States Air Force-managed joint base. The airfield is approximately 25 mi east-southeast of Trenton in Manchester Township and Jackson Township in Ocean County, New Jersey, United States. It is primarily the home to Naval Air Warfare Center Aircraft Division Lakehurst, although the airfield supports several other flying and non-flying units as well. Its name is an amalgamation of its location and the last name of Commander Louis H. Maxfield, who lost his life when the R-38/USN ZR-2 airship crashed during flight on 24 August 1921 near Hull, England.
The Goodyear Airdock is a construction and storage airship hangar in Akron, Ohio. At its completion in 1929, it was the largest building in the world without interior supports.
Hangar No. 1 is an airship hangar located at Naval Air Engineering Station Lakehurst in Manchester Township, in Ocean County, New Jersey, United States. It was the intended destination of the rigid airship LZ 129 Hindenburg prior to the Hindenburg disaster on May 6, 1937, when it burned while landing. Built in 1921, it is one of the oldest surviving structures associated with that period's development of lighter-than-air flight. It was designated a National Historic Landmark in 1968.
Hangar One is one of the world's largest freestanding structures, covering 8 acres at Moffett Field near Mountain View, California in the San Francisco Bay Area.
Airship hangars are large specialized buildings that are used for sheltering airships during construction, maintenance and storage. Rigid airships always needed to be based in airship hangars because weathering was a serious risk.
The Naval Lighter Than Air Station Richmond was a South Florida military installation about 18 miles (29 km) south of Miami and 3.5 miles (5.6 km) west of US 1. It was an active air base during World War II.
The Weeksville Dirigible Hangar is an airship manufacturing, storage and test facility originally built by the United States Navy in 1941 for servicing airships conducting anti-submarine patrols of the US coast and harbors. It is located on the former Naval Air Station Weeksville in Elizabeth City, North Carolina, approximately 2 miles southeast of the present day Coast Guard Air Station Elizabeth City.
The U.S. Naval Air Station, Sunnyvale Historic District, also known as Shenandoah Plaza, is a historic district located on 62.48 acres (25.3 ha) at Moffett Field, California.
A hangar is a structure built to house aircraft.
In the nation's quest to provide security along its lengthy coastlines, air reconnaissance was put forth by the futuristic Rear Admiral William A. Moffett. Through his efforts, two Naval Air Stations were commissioned in the early 1930s to port the Naval Airships (dirigibles) which he believed capable of meeting this challenge.
The United States Navy proposed to the U.S. Congress the development of a lighter-than-air station program for anti-submarine patrolling of the coast and harbors. This program proposed, in addition to the expansion at Naval Air Station and Lakehurst, the construction of new stations. The original contract was for steel hangars, 960 ft (290 m) long, 328 ft (100 m) wide and 190 ft (58 m) high, helium storage and service, barracks for 228 men, a power plant, landing mat, and a mobile mooring mast.
The Akron-class airships were a class of two rigid airships constructed for the US Navy in the early 1930s. Designed as scouting and reconnaissance platforms, the intention for their use was to act as "eyes for the fleet", extending the range at which the US Navy's Scouting Force could operate to beyond the horizon. This capability was extended further through the use of the airships as airborne aircraft carriers, with each capable of carrying a small squadron of airplanes that could be used both to increase the airship's scouting range, and to provide self-defense for the airship against other airborne threats.
NAS blimp bases, (Navy Air Stations Blimps bases), were United States Navy blimp bases built to protect coastal waters during World War II. Navy Blimps could stay in the air and patrol coastal waters much longer than airplanes. The bases were also called Naval Lighter-than-Air Bases. The blimps (non-rigid airships) were built by Goodyear Aircraft Company of Akron, Ohio. The blimps were powered by two aircraft radial air-cooled engines, the crew worked and on long patrols lived in a car under the envelope. The Navy's anti-submarine warfare operation operated in both the Atlantic and Pacific Ocean. To protect the blimps from strong winds and thunderstorms on the ground most bases had one or more larger airship hangars. Due to the shortage of steel during the war, many hangars were built out of wood.