US Air Force Research Laboratory pulsed detonation engine constructed from off-the-shelf automotive parts. The engine was successfully tested on a modified Scaled Composites Long-EZ aircraft in 2008.
https://diqn32j8nouaz.cloudfront.net...1_fullsize.jpg
Previously:
https://www.homemadetools.net/forum/...665#post216235
https://www.homemadetools.net/forum/...715#post209742
https://www.homemadetools.net/forum/...851#post156317
https://www.homemadetools.net/forum/...531#post128073

