I have seen that one. The lil one I saw had a small vintage type RC gas engine spark plug to keep it running and a fuel tank and a throttle / fuel valve controlled the thrust. They are simple valveless pulse jet vs shutter type vs (reed) type like whats here in this build thread.
https://www.youtube.com/watch?v=cFK2B6txOL8
vent/shutter type
https://www.youtube.com/watch?v=QY308O42Ur4
Last edited by Pond Skipper; 09-19-2014 at 07:59 PM.