航空学报 > 2016, Vol. 37 Issue (7): 2208-2217   doi: 10.7527/S1000-6893.2015.0299

加装格尼襟翼旋翼的直升机飞行性能

张勇刚, 崔钊, 韩东, 李建波   

  1. 南京航空航天大学 直升机旋翼动力学国家级重点实验室, 南京 210016
  • 收稿日期:2015-08-06 修回日期:2015-11-03 出版日期:2016-07-15 发布日期:2015-11-26
  • 通讯作者: 韩东 男,博士,副教授。主要研究方向:旋翼动力学设计、直升机结构及载荷分析。Tel.:025-84896444,E-mail:donghan@nuaa.edu.cn E-mail:donghan@nuaa.edu.cn
  • 作者简介:张勇刚 男,硕士研究生。主要研究方向:直升机总体设计。Tel.:025-84896444,E-mail:ygzhang@nuaa.edu.cn;崔钊 男,博士研究生。主要研究方向:直升机总体设计、旋翼空气动力学、直升机飞行力学。Tel.:025-84895188,E-mail:hawkcz@nuaa.edu.cn;李建波 男,博士,研究员,博士生导师。主要研究方向:旋翼类飞行器总体设计、直升机气动及飞行动力学、旋翼结构及动力学设计。Tel.:025-84895188,E-mail:ljb101@nuaa.edu.cn
  • 基金资助:

    国家自然科学基金(11472129);航空科学基金(2013ZA52014);中央高校基本科研业务费专项资金(NS2014007);江苏高校优势学科建设工程资助项目

Flight performance of helicopter rotors with Gurney flaps

ZHANG Yonggang, CUI Zhao, HAN Dong, LI Jianbo   

  1. Science and Technology on Rotorcraft Aeromechanics Laboratory, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
  • Received:2015-08-06 Revised:2015-11-03 Online:2016-07-15 Published:2015-11-26
  • Supported by:

    National Natural Science Foundation of China (11472129); Aeronautical Science Foundation of China (2013ZA52014); the Fundamental Research Funds for the Central Universities (NS2014007); A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions

摘要:

为研究加装格尼襟翼旋翼的直升机飞行性能,建立了加装格尼襟翼旋翼的直升机飞行动力学模型。采用UH-60A直升机试飞数据验证了计算模型的正确性。在此基础上,分析了样例直升机加装格尼襟翼后重量系数、格尼襟翼高度、沿径向位置和加装方式对旋翼需用功率的影响,以及加装格尼襟翼后旋翼桨叶剖面迎角分布、旋翼操纵量和机身姿态角的变化等。研究表明,直升机在重量系数较大的状态下高速前飞时,旋翼加装格尼襟翼能够明显降低直升机的需用功率,且加装转动格尼襟翼的效果优于加装固定格尼襟翼。功率降低幅值随格尼襟翼高度的增加先增加后减小。格尼襟翼在桨叶上布置的位置越靠近桨尖,其对需用功率的影响越大。直升机在重量系数较大的状态下高速前飞时,加装格尼襟翼能够使旋翼后行侧最大迎角显著减小。加装格尼襟翼后旋翼总距和纵横向周期变距减小。

关键词: 直升机, 旋翼, 格尼襟翼, 需用功率, 迎角

Abstract:

To investigate the helicopter performance with the rotor deployed with Gurney flaps, a helicopter flight dynamics model is coupled with a Gurney flap model to analyze the fight performance. The flight test data of UH-60A helicopter is utilized to validate the modeling. The influence of the helicopter weight coefficient, Gurney flap height, deployment position and type on the rotor power is investigated. The distributions of the angle of attack over the rotor disk, rotor pitch controls and fuselage attitude angles are also analyzed. The results indicate that the Gurney flap can significantly reduce the required rotor power with larger takeoff gross weight at higher speed forward flight. The moveable Gurney flap can achieve better performance improvement than the fixed height Gurney flap. The power reduction increases with the height of Gurney flap and then decreases. The Gurney flap can introduce a larger power reduction when the position of Gurney flap is near the blade tip. The deployment of Gurney flap can distinctly decrease the maximum angle of attack in the retreating side with larger takeoff gross weight at higher speed forward flight. The collective, longitudinal and lateral cyclic pitches decrease with the deployment of Gurney flaps.

Key words: helicopter, rotor, Gurney flap, required power, angle of attack

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