This is a quick video I made with a friend who's built a valveless thermo pulse jet, which is a pretty cool thing in itself.
The daylight shots are all from the HV40, the night shots are with an iPhone 4S. Sound recorded from a HTDZ HT320A cheap-ass Chinese microphone, which performed spectacularly considering the pulse jet peaks at around 125 decibels.
The original clip was around 6 minutes long, all the editing was basically just to remove "a few seconds of the same thing" a few times, and some dissolves to reduce the sharpness of a few cuts.
Smoke machine is to demonstrate the thrust of the thing, which hasn't been measured yet.