Pulsejet
Engine where combustion is pulsed instead of continuous
Pulsejet
A pulsejet engine (or pulse jet) is a type of jet engine in which combustion occurs in pulses. A pulsejet engine can be made with few or no moving parts, and is capable of running statically (that is, it does not need to have air forced into its inlet, typically by forward motion). The best known example is the Argus As 109-014 used to propel Nazi Germany's V-1 flying bomb. Pulsejet engines are a lightweight form of jet propulsion, but usually have a poor compression ratio, and hence give a low specific impulse. The two main types of pulsejet engines use resonant combustion and harness the combustion products to form a pulsating exhaust jet that intermittently produces thrust. The traditional valved pulsejet has one-way valves through which incoming air passes. When the fuel mix is ignited, the valves close, which means that the heated gases can only leave through the engine's tailpipe, thus creating forward thrust. The second type is the valveless pulsejet. The technical terms for this...
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