Kyung-Jae Lee, Bo-Hwa Lee, Sang-Hun Kang, Jae-Hong Jung,Soo-Seok Yang, Dae-Sung Lee/Jae-Su Kwak
International Journal of Aeronautical and Space Sicences, vol. 8, no. 2, pp.121-125, 2007

Abstract : In late 1960’s, engineers of the engine manufacturer experienced that the distortion of inlet flow of turbofan and turbojet engine could cause the surge in compressor and affect overall engine operational performance, which result in the deterioration of stability of the engine. In this study, block type of inlet distortion simulating device has been developed in order to investigate the effect of inlet distortion on the deterioration of overall engine operational performance. The inlet distortion simulating device was installed in front of engine inlet in order to simulate distortion of inlet flow. The degree of inlet distortion was measured by rakes installed upstream the inlet distortion simulating device and between the engine inlet and inlet distortion simulating device. Before applying the inlet distortion simulating device to real engine, preliminary tests were performed with a simulated engine in order to verify the degree of inlet distortion by the device. Preliminary inlet distortion tests were performed in Altitude Engine Test Facility(AETF) of Korea Aerospace Research Institute(KARI) and results showed that the inlet distortion simulating device could be used in simulating various inlet distortion cases.

Keyword : Gas-Turbine Engine, Inlet Distortion Simulation, Pressure Distortion