![]() ![]() However, it has an energy density of 10.05 kJ/L at normal atmospheric pressure and temperature, compared to ~31293 kJ/L for liquid fuels, 3114 times lower. Hydrogen has a specific energy of 119.9 MJ/kg, compared to ~43.5 MJ/kg for usual liquid fuels, 2.8 times higher. Kerosene is highlighted in red and hydrogen in blue. Hydrogen properties Energy density of fuels: horizontal per mass, vertical per volume. ![]() Epstein considers investments would be better spent on sustainable aviation fuel than on hydrogen aircraft. Ĭonsiderable added electrical generation would be needed as the jet fuel energy consumed in 2019 represented 14% of the world’s electricity and generating the power needed, producing, liquefying and distributing the hydrogen would cost several trillion dollars. McKinsey & Company forecast hydrogen aircraft entering the market in the late 2030s and scaling up through 2050, when they could account for a third of aviation's energy demand. Boeing acknowledges the technology potential and Airbus plans to launch a first commercial hydrogen-powered aircraft by 2035. Hydrogen, which can be produced from low-carbon power and can produce zero emissions, can reduce the environmental impact of aviation. It cannot be stored in a traditional wet wing, and hydrogen tanks have to be housed in the fuselage or be supported by the wing. 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. Type of airplane The hydrogen-powered Tu-155 prototype made its first flight on 15 April 1988.Ī hydrogen-powered aircraft is an aeroplane that uses hydrogen fuel as a power source. ![]()
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