Influence of starting position of ship surface flow field on rotor transient aeroelastic response

被引：0
|
作者：
Zhao J. [1 ]
Han D. [1 ]
Yu L. [1 ]
Sang Y. [1 ]
机构：
[1] National Key Laboratory of Science and Technology on Rotorcraft Aeromechanics, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing
来源：
Hangkong Dongli Xuebao/Journal of Aerospace Power | 2020年 / 35卷 / 01期
关键词：
Airflow gradient; Helicopter; Ship surface flow field; Starting position; Transient aeroelastic response;
D O I：
10.13224/j.cnki.jasp.2020.01.017
中图分类号：
学科分类号：
摘要：
In order to study the influence of starting position of helicopter on rotor transient aeroelastic response in ship surface flow field, the velocity distribution information of ship surface flow field was simulated by CFD method. Nonlinear quasi-steady aerodynamic model and moderately deformed beam assumption were used in rotor dynamics modeling, and the dynamic equations were solved by combining different starting positions. The results showed that if the starting position of helicopter was closer to the bow and the port side, the negative swing of blade was greater. Within 1m of the deck center, the maximum negative displacement near the port side of the bow can reach 15.9% of the rotor radius, while the maximum negative displacement at the center was only 8.5% of the rotor radius. The vertical airflow gradient near the port side and the bow was obviously higher than that near the starboard side and the stern. The results show that the vertical airflow gradient has a significant effect on the transient aeroelastic response of the rotor. Changing the starting position of helicopter can effectively reduce the transient aeroelastic response of the rotor. © 2020, Editorial Department of Journal of Aerospace Power. All right reserved.
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页码：144 / 152
页数：8
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