1 янв 1957 г. - Pratt & Whitney's model 304 jet engine using liquid hydrogen as fuel tested for the first time as part of the Lockheed CL-400 Suntan project. The specifications for the U-2 a double axle liquid hydrogen semi-trailer were issued.

2 сен 2017

1422

1 янв 1957 г.

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~ 68 г назад

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