Method for manufacturing an outlet nozzle for a liquid fuel rocket engine

摘要

The outlet nozzle(10) is formed as a body of revolution around a longitudinal axis with a cross section varying in diameter along this axis. The wall structure is made up of multiple mutually adjacent cooling channels(11) extending from nozzle inlet(12) to nozzle outlet(13). Multiple pre-processed profile members are produced each having a web and flanges extending from the web. Each member is milled to have a gradually tapering width in the longitudinal direction and then curved to conform to the desired bell-shaped profile. All the members are then joined by welding to form the bell-shaped nozzle(10) with the cooling channels(11) formed by adjacent member webs and pairs of flanges.