关键词: 涡轮喷气发动机;涡轮导向叶片;水流试验;测量方法

Abstract: The throat area of turbine nozzle which is very important in gas turbine engine’s design and manufacture must be controlled strictly. The key for controlling the throat area is how to measure the value exactly. This paper introduces how to measure the area by water flow, including theory, method and comparison with other methods.

Key words: Turbojet engine;Turborotor;Water flow test;Measurement method