Mechanical Sciences
Mechanical Sciences
Mechanical Sciences
Articles | Volume 17, issue 1
Articles | Volume 17, issue 1
https://doi.org/10.5194/ms-17-545-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ms-17-545-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 1
Research article
 | 
20 May 2026
Research article |  | 20 May 2026

Effect of engine torque fluctuations under different flight conditions on the torsional vibration response of helicopter power input chain

Hongli Yue, Chao Li, Guangfu Bin, Xianghuan Liu, Jian Li, Anhua Chen, and Qiang Li

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Short summary
Helicopter engines often generate rapidly changing torque under different flight conditions, which can increase vibration in the transmission system and affect reliability. This study examines how these variations influence system behavior in typical scenarios. The results show that the rate of torque change, rather than its magnitude, plays a key role. Faster changes significantly amplify vibration in critical components, providing guidance for improving system safety and durability.
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