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The hydrogen-powered Tu-155 prototype made its first flight on 15 April 1988.. A hydrogen-powered aircraft is an aeroplane that uses hydrogen fuel as a power source. Hydrogen can either be burned in a jet engine or another kind of internal combustion engine, or can be used to power a fuel cell to generate electricity to power an electric propulsor.
HY4 is a four seat hydrogen fuel cell powered aircraft. It made its maiden flight on 29 September 2016 from Stuttgart Airport, powered by gaseous hydrogen.It was designed by DLR Institute of Engineering Thermodynamics of the German Aerospace Center, [2] [3] [4] based on the Taurus G4, manufactured by Pipistrel.
Jet fuel is a gas turbine fuel used in propeller and jet fixed-wing aircraft and helicopters. It has a low viscosity at low temperature, has limited ranges of density and calorific value , burns cleanly, and remains chemically stable when heated to high temperature.
Airbreathing jet engines are nearly always internal combustion engines that obtain propulsion from the combustion of fuel inside the engine. Oxygen present in the atmosphere is used to oxidise a fuel source, typically a hydrocarbon-based jet fuel. [1] The burning mixture expands greatly in volume, driving heated air through a propelling nozzle.
An electric aircraft runs on electric motors with electricity coming from fuel cells, solar cells, ultracapacitors, power beaming, [42] or batteries. Currently, flying electric aircraft are mostly experimental prototypes, including manned and unmanned aerial vehicles, but there are some production models on the market. [43]
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On passenger planes, fuel tanks are often integrated into the wings, and when there are also tanks inside the body of the aircraft, the wing tanks are used preferentially. [7] [6] The placement reduces the stress on the wings during takeoff and flight, by putting the heavy fuel directly inside the source of lift. [7]
Australian Federal Police said in a statement that “officers arrested a man after he allegedly ran naked through the aircraft mid-flight and knocked a crew member to the floor.”