pulssisuuttimet

Pulssisuuttimet, known in English as pulse jet engines, are a type of simple jet engine that produces thrust through a series of intermittent explosions. They consist of a combustion chamber, an intake valve, and a nozzle. Fuel and air are mixed in the combustion chamber. Ignition causes a rapid expansion of gases, which are expelled through the nozzle, creating thrust. The expanding gases also create a low-pressure area that draws more air and fuel into the chamber, initiating the next cycle. This cyclical process, characterized by rapid bursts of thrust, gives the engine its name.

Unlike continuous flow jet engines, pulssisuuttimet do not require a compressor. The intermittent nature of their operation means they are generally less efficient and produce more noise than continuous flow engines. However, their simplicity, low cost, and ease of construction have made them suitable for specific applications. Historically, they were used in early aircraft designs, such as the V-1 flying bomb during World War II. They have also found use in experimental aircraft, some model aircraft, and even in certain industrial applications like crop dusting or fire-fighting equipment where their unique thrust characteristics are advantageous. The resonant frequency of the engine plays a crucial role in its operation and performance.