关键词: 燃油加热器;加热试验;预热;喷气发动机;高空仿真试验台

Abstract: Experiments were conducted to study the heat transfer characteristics and the total efficiency of the indirect air heating system of a simulated altitude test facility with the engine testing. Simulation test results show that simulated temperature vs time and the air supply pressure vs time were obtained with the engine in the simulated altitude test facility and under different simulated conditions and multiple flame liners of the heater, and by means of the technical measure. Simulation test results show that total pressure recovery factor for the simulated altitude test facility is 0.67, the total efficiency of the indirect air heating system is from 0.41 to 0.55, but it is about 0.62 for another simulated altitude test facility. Reason analysis and measure of resolve problems were presented.

Key words: Fuel heater;Heating test;Preheating;Jet engine;Altitude simulated test cell