Re: 75mm Locky Kazoo (say that 10 times fast)
Posted: Sun Jan 12, 2014 6:52 am
The Meredith effect.Mike Everman wrote:Ah, the boys are back in town! Back to the what was it called? P51 hot air ramjet thruster thingy? though nothing beats the heat transfer of burning fuel in the air that is the working fluid...
This was my thinking as well. A second way to do this would be to run a tapered tube right down the center of an annular-type design as in this cutaway.Bruno Ogorelec wrote:Sure enough. But...Mike Everman wrote:Ah, the boys are back in town! Back to the what was it called? P51 hot air ramjet thruster thingy? though nothing beats the heat transfer of burning fuel in the air that is the working fluid...
In combustion efficiency stakes, nothing beats fluid pressure, yet, pulsejets make do with pitiful fluid pressures. You work with what you have.
In the pulsejet you have a great amount of heat going nowhere. Making it go somewhere useful might not be a bad idea. Especially if it makes the outside of the engine less hot in the process, suppresses a bit of noise etc. etc.
So, maybe you trade a bit of efficiency on the left and gain a bit on the right. What if you gain more than you lose? Everything depends on the bottom line.
