发明名称 |
METHOD AND APPARATUS FOR MONITORING TURBINE EFFICIENCY OF AIRCRAFT AUXILIARY POWER UNIT |
摘要 |
The present invention relates to a method and device for monitoring performance of an auxiliary power unit (APU) turbine efficiency of an aircraft. The method comprises: obtaining APU messages at multiple time points within a period; obtaining APU startup parameters including at least a rotation speed at a peak of EGT according to the APU messages; calculating a percentage NPA of the rotation speed when the exhausting gas temperature EGT reaches its peak at the APU startup stage relative to the rotation speed in the APU normal operation; calculating the average of the NPA within the period; and determining which of the stable, decline and failure phases the APU turbine efficiency is in according to the average of the NPA. |
申请公布号 |
CA2857787(A1) |
申请公布日期 |
2015.01.24 |
申请号 |
CA20142857787 |
申请日期 |
2014.07.24 |
申请人 |
AIR CHINA LIMITED |
发明人 |
GU, ZHUPING;ZHANG, CHI;HUANG, LEI;DING, HUIFENG;WU, JIAJU;ZHANG, YANFENG;MA, HONGTAO;CHEN, LEI |
分类号 |
G01M15/14;B64D41/00;B64D47/00;F02C7/00 |
主分类号 |
G01M15/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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