[mattivc]

I have been toying with the idea of trying to create a small Pulsejet[1] engine and stick it on a UAV frame. It's a very simple design and shouldn't be to hard to make with, i think.

[1]: http://en.wikipedia.org/wiki/Pulsejet

[bigiain]

Apparently these work OK: http://hobbyking.com/hobbyking/store/__37414__Hobbyking_Puls...

[willyt]

You should see this stuff. http://aardvark.co.nz/pjet/ Pretty crazy. He got some attention in the news a few years ago with his DIY cruise missile project.

[matheweis]

Here's the pilot from the op flying a pulsejet ... sounds like a lawnmower: http://www.youtube.com/watch?v=AJLWMZHlD90