In late 2001, Tom Mueller was sacrificing his nights and weekends to build a liquid-fuel rocket engine in his garage. Mueller, a propulsion engineer at Redondo Beach, Calif.–based aerospace firm TRW, ...
The dream fuel of rocket engineers is liquid hydrogen. It develops more thrust per lb. than kerosene, the standard ingredient for liquid-fuel rockets. But because of its low boiling point ( — 423° F.) ...
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