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Ice Crystal Icing Engine Testing in the NASA Glenn Research Center's Propulsion Systems Laboratory: Altitude Investigation

机译:美国国家航空航天局格伦研究中心推进系统实验室的冰晶冰发动机测试:高度调查

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摘要

The National Aeronautics and Space Administration (NASA) conducted a full scale ice crystal icing turbofan engine test using an obsolete Allied Signal ALF502-R5 engine in the Propulsion Systems Laboratory (PSL) at NASA Glenn Research Center. The test article used was the exact engine that experienced a loss of power event after the ingestion of ice crystals while operating at high altitude during a 1997 Honeywell flight test campaign investigating the turbofan engine ice crystal icing phenomena. The test plan included test points conducted at the known flight test campaign field event pressure altitude and at various pressure altitudes ranging from low to high throughout the engine operating envelope. The test article experienced a loss of power event at each of the altitudes tested. For each pressure altitude test point conducted the ambient static temperature was predicted using a NASA engine icing risk computer model for the given ambient static pressure while maintaining the engine speed.
机译:美国国家航空航天局(NASA)在NASA Glenn研究中心的推进系统实验室(PSL)中使用过时的Allied Signal ALF502-R5发动机进行了全尺寸的冰晶糖衣涡扇发动机试验。在1997年的霍尼韦尔(Honeywell)飞行试验活动中,研究涡轮风扇发动机的冰晶结冰现象时,在高空运行期间摄入冰晶之后,摄入的冰晶经历了动力损失事件,这是使用的测试物品的确切发动机。测试计划包括在已知的飞行测试战场现场事件压力高度以及在整个发动机工作范围内从低到高的各种压力高度下进行的测试点。测试物品在每个测试高度都经历了断电事件。对于每个压力高度测试点,在保持发动机转速的同时,使用NASA发动机结冰风险计算机模型针对给定的环境静态压力预测了环境静态温度。

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