Aircraft auxiliary power unit and the fuel assembly performance detection means

The present invention relates to a method for detecting performance of an auxiliary power unit APU fuel assembly, comprising: obtaining a time period APU packets on a plurality of time points; acquiring operating parameters of the APU APU fuel assembly according to the packet, the said operating parameters include at least start time STA; the average value AVG and the start time deviation δ STA index calculating the period of time; the deviation δ is determined according to the performance index of the APU fuel assembly in the stationary phase, recession, or failure period.