Back مەکینەی موشەکی نۆزل CKB Raketdyse Danish Tobera del motor cohete Spanish نازل موتور موشک Persian Nosel mesin roket ID ロケットエンジンノズル Japanese Rocket engine nozzle SIMPLE Vòi phun động cơ tên lửa Vietnamese 火箭发动机喷管 Chinese
A rocket engine nozzle is a propelling nozzle (usually of the de Laval type) used in a rocket engine to expand and accelerate combustion products to high supersonic velocities. Simply: propellants pressurized by either pumps or high pressure ullage gas to anywhere between two and several hundred atmospheres are injected into a combustion chamber to burn, and the combustion chamber leads into a nozzle which converts the energy contained in high pressure, high temperature combustion products into kinetic energy by accelerating the gas to high velocity and near-ambient pressure.