Model rocket nozzle, which is a critical component in rocket propulsion. This specific design appears to be inspired by a convergent-divergent nozzle (often referred to as a de Laval nozzle), which is commonly used in rocketry to efficiently accelerate exhaust gases and generate thrust.

Key Features:Converging Section:The lower part of the nozzle gradually narrows inward. This region compresses the exhaust gases from the combustion chamber.Throat:The narrowest point in the nozzle, located between the converging and diverging sections. It is crucial for controlling the flow speed of the gases, usually achieving Mach 1 (the speed of sound) at this point.Diverging Section:The upper part of the nozzle widens outwards. Here, the high-pressure, high-speed gases expand, converting thermal energy into kinetic energy and exiting at supersonic speeds.Exit Lip/Nozzle Bell:The top cylindrical structure where the gases finally exit the nozzle. It is designed to minimize flow separation and maximize thrust efficiency.

Purpose:This nozzle is likely designed for educational or hobbyist model rockets