沈阳航空航天大学学报2024，Vol.41Issue(3)：21-29,9.DOI:10.3969/j.issn.2095-1248.2024.03.004
涡扇发动机吞雹试验
Hailstone ingestion test of turbofan engine
摘要
Abstract
According to the CCAR-33R2 standard 33.78(a),a test method of the engine hailstone in-gestion was studied and verified to investigate the hailstone ingestion capability of one turbofan engine.The test process was arranged;the test conditions were determined;the engine and test bench were an-alyzed;the protection,photography,and projection devices were designed;and the producing meth-od of hailstone was studied.The hailstone was projected to the engine by the projection device.At the same time,a target calibration test and an air gun test were designed before the actual test.The target calibration test ensured the speed and accuracy of the projection,while the air gun test tested the influ-ence of the projection device on the engine intake.Furthermore,a high-speed photography test was conducted to verify the speed and impact accuracy of the hailstone.The engine thrust decreased for a short time during the process of hailstone ingestion and then resumed stable operation.After hailstone ingestion,the exhaust temperature of the engine decreased by about 2%～3%,the rotor difference changed by about-0.6%～0.2%,the thrust decreased by about 0.1%～1.6%,and other parameters did not have significant change.The impact response of the fan was collected through the time-domain sig-nal of the low-pressure measuring point.After disassembling the engine,the deformation of the intake edge of 5 fan blades was checked,no block falling occurred,and no structural damage that may endan-ger flight safety was found,which verified the airworthiness conformance of the turbofan engine for hailstone ingestion.关键词
涡扇发动机/吞雹试验/投射装置/校靶试验/空炮试验/适航符合性Key words
turbofan engine/hailstone ingestion test/projection device/target calibration test/air gun test/airworthiness conformance分类
航空航天引用本文复制引用
崔博,张清,牛坤..涡扇发动机吞雹试验[J].沈阳航空航天大学学报,2024,41(3):21-29,9.基金项目
中央高校基本科研业务费专项资金资助项目(项目编号:N2103026) （项目编号:N2103026）
