www.pulse-jets.com

The Kadenacy book "Piston Made of Air" is now packaged with all of the site's acoustic power books at 11$ for the whole set. Price went down because it's not printed and mailed anymore, it's now instant download. Most of the books are about 200-300 pages long, quality varies but it's good mind candy...

I'm writing to see if anyone thinks that a one-way valve in a tube could be used, because of wave reflections, to put fresh air into a pressure tank without the conventional method of forcing it in directly against the tank's resisting pressure. Like a pulsejet but it uses two or more check valves i...