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Comprising a helium airship with auxiliary wing and tail surfaces, it flies using both aerostatic and aerodynamic lift and is powered by four diesel engine-driven ducted propellers. The HAV 304 was originally built for the United States Army 's Long Endurance Multi-intelligence Vehicle (LEMV) programme.
View from cockpit of a Zeppelin NT. The Zeppelin NT ("Neue Technologie", German for new technology) is a class of helium-filled airships being manufactured since the 1990s by the German company Zeppelin Luftschifftechnik GmbH (ZLT) in Friedrichshafen. [1]
The company's 124-meter-long airship Pathfinder 1 received from the FAA a special airworthiness certificate for the helium-filled airship in September 2023. [169] [170] The certificate allowed the largest airship since the ill-fated Hindenburg to begin flight tests at Moffett Field, a joint civil-military airport in Silicon Valley.
Because the element is so precious, the U.S. created the Federal Helium Reserve back in 1925 to secure the resource for the vitally important military asset known as airships.
Helium, unlike hydrogen, is non-flammable and safer to use. The helium bags are then sealed in the massive non-flammable blimp-like structure that makes up much of the craft.
The Spirit of Goodyear, one of the iconic Goodyear Blimps. This is a list of airships with a current unexpired Federal Aviation Administration (FAA) [1] registration.. In 2021, Reader's Digest said that "consensus is that there are about 25 blimps still in existence and only about half of them are still in use for advertising purposes". [2]
HAV is the latest in a line of companies to acquire and develop airship technologies in the UK. Aerospace Developments was formed in 1971 and since then its assets have passed through successive companies Airship Developments, Airship Industries, Westinghouse Airships, Airship Technologies, Advanced Technologies Group (ATG) and, immediately preceding HAV, the SkyCat group which folded in 2007.
The company is also developing an Aeroscraft, a rigid airship with a number of innovative features, the most important of which is a method of controlling the airship's static lift, which can be reduced by pumping helium from the internal gasbags and storing it under pressure: conversely lift can be increased by re-inflating the gasbags using ...