Developable performance of hydrogen fueled aircraft (J)

Abstract

A hydrogen-powered commercial vehicle was released about 20 years ago, and the Toyota Mirai has evolved further with improved performance, leading to the release of a new model two years ago. The approximate performance is that it has the same dead weight as a small aircraft, has the same engine output of about 100 kW, consumes 5.6 kg of hydrogen, and has a crew of about 4 people, with own weight of 2 tons and can travel 700 km. In other words, assuming a large aircraft (40,000kw) with a total takeoff weight of 300 tons (100 tons of cargo), the hydrogen battery device will be approximately 24 tons (60 kg/100 kw) and the propulsion aircraft will be approximately 20 tons (50 kg/100 kw). It is possible to achieve this by assuming that the LH2/CH2 tank is approximately 70 tons (7 tons of hydrogen) and the fuselage is 30 tons with a pipe tank structure. The biggest challenge is to achieve maximum weight reduction by using aircraft LH2 tanks, which are 10 times lighter than hydrogen fuel, and if possible, CH2 tanks in combination with aircraft structural materials. The performance of large and small hydrogen-fueled airplanes that can be realized in the near future through the development of the proposed pipe tank technology is described with the prospect of significantly exceeding the performance of jet-fueled airplanes.