Aerodynamic performance and flow interaction of the coaxial rigid rotor in hover

被引：0
|
作者：
Yang G. [1 ]
Zhao X. [1 ]
Yan X. [1 ]
Zhou P. [1 ]
Lu S. [1 ]
Lin Y. [2 ]
机构：
[1] National Key Laboratory of Science and Technology on Aerodynamic Design and Research, School of Aeronautics, Northwestern Polytechnical University, Xi'an
[2] China Helicopter Research and Development Institute, Aviation Industry Corporation of China, Jingdezhen, 333001, Jiangxi
来源：
| 2018年 / Beijing University of Aeronautics and Astronautics (BUAA)卷 / 33期
关键词：
Aerodynamic interaction; Coaxial rigid rotor; Hover; Navier-Stokes equations; Structured grid; XH-59A rotor;
D O I：
10.13224/j.cnki.jasp.2018.01.014
中图分类号：
学科分类号：
摘要：
A numerical method based on RANS(Reynolds-averaged Navier-Stokes) equations was developed to predict the aerodynamic performance of coaxial rigid rotor in hover. Validation of the method was carried out on the hovering tests for the subsonic and transonic flows. The simulation of rigid rotor XH-59A in hover showed that CFD prediction of rotor performance agreeed with the flight test data. Compared with single rotor of the same solidity, coaxial rigid rotor had better performance, along with bigger figure of merit. The performance of the upper rotor decreased less than that of the lower rotor. Reasons were related to the suction effect of the lower rotor on the flow and its location in the downwash flow field of the upper rotor, resulting in the decrease of its effect angle attack. Numerical method indicated that the optimum figure of merit for XH-59A was 67%, when the collective pitch angle for both rotors was 14°. Compared with traditional coaxial rotor, the interstage distance of rigid rotor was smaller, leading to a better aerodynamic performance. © 2018, Editorial Department of Journal of Aerospace Power. All right reserved.
引用
收藏
页码：116 / 123
页数：7
相关论文
共 17 条
  • [1] Lakshminarayan V.K., Baeder J.D., High-resolution computational investigation of trimmed coaxial rotor aerodynamics in hover, Journal of the American Helicopter Society, 54, 4, pp. 42008.1-42008.21, (2009)
  • [2] Lakshminarayan V.K., Baeder J.D., Computational investigation of micro-scale coaxial rotor aerodynamics in hover, Journal of Aircraft, 47, 3, pp. 940-955, (2010)
  • [3] Lakshminarayan V.K., Bader J.D., Computational investigation of small scale coaxial rotor aerodynamics in hover, (2009)
  • [4] Xu H., Ye Z., Coaxial rotor helicopter in hover based on unstructured dynamic overset grids, Journal of Aircraft, 47, 5, pp. 1820-1824, (2010)
  • [5] Xu H., Ye Z., Numerical simulation of unsteady flow around forward flight helicopter with coaxial rotors, Chinese Journal of Aeronautics, 24, 1, pp. 1-7, (2011)
  • [6] Xu H., Ye Z., Numerical simulation of interaction unsteady flows around coaxial rotors in hover, Journal of Aerospace Power, 26, 2, pp. 453-457, (2011)
  • [7] Ye L., Xu G., Calculation on flow field and aerodynamic force of coaxial rotors in hover with CFD method, Acta Aerodynamic Sinica, 30, 4, pp. 437-442, (2012)
  • [8] Zhu Z., Zhao Q., Li P., Investigations on unsteady flow interaction mechanism of coaxial rigid rotors in hover, Acta Aeronautica et Astronautica Sinica, 37, 2, pp. 568-578, (2016)
  • [9] Su D., Shi Y., Huang S., Et al., Research on aerodynamic interaction effect of rigid coaxial rotor, Aeronautical Science and Technology, 26, 11, pp. 10-18, (2015)
  • [10] Coleman C.P., A survey of theoretical and experimental coaxial rotor aerodynamic research, (1997)
12