| LI Xiao-biao1，MA Qing-yan2，ZHANG Li-wei1，GU Xue-hua 1.Analysis and Elimination on Speed Swing of an Aeroengine High Pressure Rotor[J].航空发动机,2021,47(5):62-65 |
| Analysis and Elimination on Speed Swing of an Aeroengine High Pressure Rotor |
| DOI： |
| Key Words:high pressure rotor speed swing speed oscillating speed regulating system accelerated controller aeroengine |
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| Abstract:On speed swing of an aeroengine high pressure rotor，the fault phenomenon was analyzed in detail. The control principle of
high pressure rotor speed was expounded，the fault mechanism was analyzed，and the fault tree was formulated. Combined with the fault
tree，four kinds of causes such as inlet temperature sensing unit fault，integrated electronic regulator fault，fuel system fault，and speed reg?
ulation system fault were enumerated. After a series of analysis of four kinds of fault causes，it was determined that the acceleration controller
did not completely quit work and had the function to control the rotor speed, which was the reason for the speed swing. Aiming at the speed
swing aeroengine，the acceleration was adjusted to a reasonable range，and the measures were verified in the ground testing and flight testing.
The results show that the engine operating parameters are normal，the speed swing phenomenon disappears，the engine thrust is stable，and
the fault is eliminated. |
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