Momentarily confused between a ramjet[1] and a valveless pulsejet[2] -- the latter are played with by many amateurs( e.g.[3]) producing amusing videos of their

Momentarily confused between a ramjet[1] and a valveless pulsejet[2] -- the latter are played with by many amateurs( e.g.[3]) producing amusing videos of their cherry-red glow and eardrum-piercing noise. [1] https://en.wikipedia.org/wiki/Ramjet https://en.wikipedia.org/wiki/Ramjet [2] https://en.wikipedia.org/wiki/Valveless_pulsejet https://en.wikipedia.org/wiki/Valveless_pulsejet [3] https://www.youtube.com/watch?v=8cR6bD57AKw https://www.youtube.com/watch?v=8cR6bD57AKw