Simulation study on battery performance of APU emergency starting under multiple states

Auxiliary power unit (APU) provides power for aircraft engine starting and auxiliary energy for aircraft. Its performance is an important guarantee for aircraft emergency safety. In emergency situation, APU uses battery to provide electric energy for self-starting. The performance of battery emergency starting determines whether APU can work normally, and it is an important link to determine whether aircraft engine can start normally in emergency situation. According to the above principles, this paper builds a battery model to provide power as energy, simulates APU emergency starting under different states, and carries out simulation research on battery power supply performance, which is used to provide a useful reference for improving the reliability of APU emergency starting.