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
SG10201404368Y(A)
申请公布日期
2015.02.27
申请号
SG10201404368Y
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