关键词: Liquid rocket engine;Turbine;Efficiency;Mathematic mo- del

Abstract: The loss factors in liquid rocket turbine are analysed in detail and a related mathematical model and calculation method is proposed. For the two-phase fluid losses in nozzle, Ronge-Kuta method is use to solve the static two-phase fluid control equations. Iteration scheme is applied to the design calculation of impulse turbine or turbine with less degree of reaction, in order that the designed turbine factors can coordinate with turbine effi-ciency. By means of the control of the calculation procedure, the present scheme can also be used at the same time in the design calculation of impulse turbine and the turbine with less deree of reaction. The effects oftwo-phase fluid loss on the turbine efficiency is analysed in accordance with calculated results.

Key words: Liquid rocket engine;Turbine;Efficiency;Mathematic mo- del