摘要
变体飞机能够改变自身外形适应不同的飞行状态,为了提升某高超声速飞行器的气动性,研究机翼变后掠方案和延伸机翼后缘变形方案对该飞行器气动性的影响。获得不同变形机翼的高超声速飞行器三维模型,基于k-ε湍流模型,对高超声速飞行器三种外形情况分别进行外部绕流流场的数值模拟,分析其在不同攻角下、不同机翼变形方案下的气动特性。结果表明:变后掠机翼方案在该高超声速飞行器设计工况下无法实现提高整机升阻比的目标,而直接延伸机翼的变形设计可以在设计工况下提高高超声速飞行器的气动特性。
The variant aircraft can change its shape to adapt to different flight states and improve aerodynamic prop‐erties of aircraft.Aiming at a new hypersonic vehicle concept machine,the applicability of the wing variable sweep design on this hypersonic aircraft is discussed,and the influence of the deformation design of directly extending the trailing edge of the wing on the aerodynamics of the aircraft is studied.Firstly,the 3D model of the hypersonic vehi‐cle with different deformable wings is obtained.Then,based on the k-εturbulence model,the numerical simulation of the external flow field around the hypersonic vehicle is carried out respectively.Finally,the aerodynamic charac‐teristics of the hypersonic vehicle under different angles of attack and different wing deformation schemes are ana‐lyzed.The research results show that the variable-sweep wing scheme cannot achieve the goal of improving the lift-to-drag ratio under the design conditions of the hypersonic vehicle,and the deformation design of directly extending the wing can improve the aerodynamic characteristics of the hypersonic vehicle under the design conditions.The re‐search results can provide reference for the design of hypersonic variant aircraft,and have certain practical value.
作者
张欣
季宏丽
周丹杰
刘燚
何承军
裘进浩
ZHANG Xin;JI Hongli;ZHOU Danjie;LIU Yi;HE Chengjun;QIU Jinhao(College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Pneumatic Laboratory,Beijing Institute of Mechanical and Electrical Engineering,Beijing 100083,China)
出处
《航空工程进展》
CSCD
2023年第4期47-57,共11页
Advances in Aeronautical Science and Engineering
基金
国家自然科学基金(51875277,51805261)
机械结构力学及控制国家重点实验室自主课题(MCMS-I-0518K01)。
