posted on Dec, 10 2008 @ 02:19 AM
Such engines can be used in manned craft as well, since the operating frequency of those engines is very high and you can also put engines on some
shock absorbers if you like.
Even betterengine is pulse detonation engine, in which the fuel doesn't burn, but it detonates, and that results in higher effiecency. All those
engines do rely on oxygen from atmosphere, but oxygen can also be in the craft for higher atmosphere and space flight. If you take scramjet inlets for
air compression, you can fly as much as 60km high relying only on atmospheric oxygen. Let me explain. Scramjets can fly at defined speed on given
altitude, due to engine intakes. If you take speeds and altitudes of NASA's hyperX in equation and the highest theoretical scramjet speedof M18, the
highest theoretical altitude is 60km.
Pulse detonation engines are promising, but the technology still has to be tried and perfected. They could be used for single stage reusable orbital
vehickes (carrying additional oxygen of course).
Oh, I'm not sure about donuts on a rope contrail. Could such engine really produce them, or is the frequency of exploisons too high to see those