https://en.m.wikipedia.org/wiki/V-1_flying_bomb
The V-1 flying bomb (German: Vergeltungswaffe 1 "Vengeance Weapon 1") was an early cruise missile. Its official Reich Aviation Ministry (RLM) designation was Fieseler Fi 103 and its suggestive name was Höllenhund (hellhound). It was also known to the Allies as the buzz bomb or doodlebug and in Germany as Kirschkern (cherry stone) or Maikäfer (maybug)

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Paul Schmidt (26 March 1898 – 18 October 1976) was a German aerospace engineer and inventor based in Munich, mainly known for his contribution to the development of the pulsejet.
Schmidt's pulse engine, with extra development, was used to power the V-1 flying bomb, the first cruise missile.
https://en.m.wikipedia.org/wiki/V-1_flying_bomb
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