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

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

doi:10.5194/ms-17-545-2026

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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Cumulative views and downloads (calculated since 20 May 2026)

Month	HTML	PDF	XML	Total
May 2026	58	31	9	98
Jun 2026	24	7	2	33
Jul 2026	27	9	4	40
Aug 2026	28	12	0	40
Sep 2026	19	6	1	26

Latest update: 07 Sep 2026

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.