Comments by "Julia P." (@juliap.5375) on "Chinese company completes test flight of supersonic aircraft ramjet" video.

  1. No. Ramjets used from late 1930s. Pretty similar to this one Soviets built in… 1954.
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  2. First useful ramjets — France in late 1930s. In 1954 Soviet built intercontinental cruise (!) missile with ramjet (3 mach on altitude ~17 km), from 1970s most of Soviet navy cruise missiles are supersonic and use ramjets.
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