Hydrogen Use a Poor Choice
Regarding Prof. T. Nejat Veziroglu’s letter “Hydrogen, Future Airline Fuel?” (AW&ST June 12, p. 12), hydrogen is not a viable aircraft fuel for these reasons: •It has to be in the liquid state. Even then, it is about 4.5 times as bulky as jet fuel for equal energy content, so there is a tankage...
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