Fault diagnostics on jet engine starting

To investigate jet engine starting, a series of engine parameters must be evaluated. The measurements of rotor speed, fuel flow rate, fuel combustion, and gas temperature must be taken in real time. A dynamic measurement system was used to evaluate the starting performance, and to diagnose faults during starting. The dynamic measurement system contained a photoelectric system and a fast thermocouple used to detect and inspect the fault symptoms during starting. As a result, the starting operation quality to be assessed can be determined and improved. The experiment was completed on a sea-level test bench for a small single spool jet engine