pulse jet

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pulse jet

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Pulse jet as used on the German flying bombs in their Second World War.
A jet propulsion engine containing neither a compressor nor a turbine. Air enters the engine through a grid of inlet valves that close as the air is heated. Expansion through the exhaust nozzle produces thrust, and the inlet reopens as the internal pressure drops. This cycle is repeated rapidly. A pulse jet is similar to a ramjet but with the added advantage of being able to produce thrust even at zero forward speed. See also aeropulse.
References in periodicals archive ?
On the other hand, the heat transfer test consists of measuring surface temperature of hot flat plate impinged by twin pulse jets and heat flux at different levels of five factors which are pulsation frequencies, nozzle-to-nozzle distance, nozzle-to-plate distance, and phase angle.
In addition, the twin pulse jets mechanism was tested by different ways.
Firstly, higher pulse jet frequency mechanism is more useful to a wide range of studies.
I was on the internet and came across a site on pulse jets. I became fascinated and built one.
It is an automatic self-cleaning system that utilizes pulse jets of high-pressure air to provide efficient, thorough cleaning with no internal moving parts.
Wheelabrator Air Pollution Control exhibited pulse jet, reverse air and shake/deflate fabric filter systems and cartridge dust collectors to control emissions and meet regulatory requirements.
* Self-cleaning filter: Compressed-air pulse jets in the filter housing extend intervals between cleaning.