Fairly sure Kelly Johnson investigated hydrogen for the SR71 and dismissed it due to storage requirements.
Fairly sure Kelly Johnson investigated hydrogen for the SR71 and dismissed it due to storage requirements.
The aircraft manufacturer, Lockheed Martin, initially wanted the SR-71 to use liquid hydrogen as fuel — similar to the space shuttle's main engines — but abandoned the idea because it would have required huge amounts of fuel.
The aircraft manufacturer, Lockheed Martin, initially wanted the SR-71 to use liquid hydrogen as fuel — similar to the space shuttle's main engines — but abandoned the idea because it would have required huge amounts of fuel.
https://www.space.com/16666-sr-71-blackbird.html
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