Nozzle

In space and astronautical engineering, a nozzle is a device designed to control the direction and speed of a fluid or gas flow. Nozzles are commonly used in rocket engines to accelerate the exhaust gases and produce thrust. The shape and size of the nozzle play a critical role in determining the performance of the rocket engine, including its thrust, specific impulse, and efficiency. Nozzles can be convergent, divergent, or a combination of both, depending on the type of engine and the operating conditions. Convergent nozzles are designed to increase the velocity of the fluid or gas by reducing its cross-sectional area, while divergent nozzles are designed to decrease the velocity by increasing the area. Nozzles can also be equipped with additional features, such as cooling channels, ablative materials, or variable geometry, to enhance their performance and durability.
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