The second jet engine is the pulsejet. These are far less complicated and have far fewer parts to build. These are the engines that powered the Buzzbombs of WWII. They have two problems. First the burn extremely hot. Secondly they are incredible loud. Loud as in that you probably will need ear protection for a small one. Although with valveless ones you have no moving parts whatsoever which would make them more full proof.
Below are some links to some designs.
http://www.pulse-jets.com/
http://www.aardvark.co.nz/pjet/
http://www.beck-technologies.com/freeplans.html
Finially a little video of Robert Maddox (the first person I saw using a pulsejet for actual propultion) giving a quick explanation of how his bike is setup
http://www.youtube.com/watch?v=QPqDoVjsMVY
Friday, June 5, 2009
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