Jwenting From Netherlands, joined Apr 2001, 10213 posts, RR: 20 Reply 2, posted (11 years 7 months 1 week 6 days 6 hours ago) and read 1142 times:
A pulsejet is a pulsed ramjet or scramjet. The pressure is not constant but goes up and down in a pulsating way. This reduces the average pressure so a higher peakpressure can be attained without having to resort to far heavier materials.
Jetguy From , joined Dec 1969, posts, RR: Reply 5, posted (11 years 7 months 1 week 5 days 16 hours ago) and read 1083 times:
The Japanese also had a kamakazi-piloted version of Germany's V1, I believe they called it the Baka. If I remember correctly the "buzzing" sound was made by the rapid opening and closing of the engine's shutters.
Lehpron From United States of America, joined Jul 2001, 7028 posts, RR: 22 Reply 6, posted (11 years 7 months 1 week 2 days 15 hours ago) and read 1018 times:
The "Buzz bomb" is a great example, in fact I'm guessing, the only example of a pulse-jet in operation. As I understand, it required an initial velocity so it was launched off a rocket-propelled catapult, then it flew on it's own up to around 400 mph.
Currently there has not been a pulsejet that can start from standstill, since there is no intake velocity, maybe if a fuel/oxygen mix were sprayed and ignited here an air-rocket could propell it to this minimum speed then it could operate until the minimum speed for ramjets, by then it would run like a ramjet by shutting off the pulse sequence.
I don't know why no one has done this yet , maybe I hypothesizing, or it may be an old Black Project.
Hope this helps ya Flywithken.
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