T/CARP 0012-2023 Active

This document specifies the general requirements for the tail cone comprehensive test of the auxiliary power unit (APU) system of civil aircraft (hereinafter referred to as the tail cone test of the APU system), including: test scope, test bench, test equipment and instruments, modification requirements, test process and method requirements, etc. The tail cone test of the APU system belongs to the APU system-level integration test, which is used to verify that the function and performance of the auxiliary power unit (APU) system comply with the APU system product specifications, such as: verification of the integration and matching of the APU main body and the APU intake and exhaust installation, the function of the APU control system, the start and stop/emergency stop function of the APU, the air supply and power supply performance of the APU, the vibration characteristics of the APU, the noise characteristics of the APU, and the function and performance under special environmental conditions (special environments including high temperature, high cold, strong crosswind, snowfall and icing, etc.). This document is applicable to the verification process of the APU system-level integration test.