›› 2014, Vol. 34 ›› Issue (2): 36-44.doi: 10.3780/j.issn.1000-758X.2014.02.005

• 研究探讨 • 上一篇    下一篇

类X-37B飞行器气动特性的数值研究

 蒋崇文1, 杨加寿2, 李克难1, 高振勋1, 李椿萱1   

  1. (1北京航空航天大学国家计算流体力学实验室,北京100191)
    (2贵州航空发动机研究所,贵州550081)
  • 收稿日期:2013-07-03 修回日期:2013-10-19 出版日期:2014-04-25 发布日期:2014-04-25
  • 作者简介:蒋崇文 1982年生,2013年获北京航空航天大学流体力学专业博士学位,讲师。研究方向为高超声速空气动力学、飞行器气动布局设计、计算流体力学。
  • 基金资助:

    国家高技术研究发展计划(863)资助项目

Numerical Study on Aerodynamic Characteristics of an X-37B-like Vehicle

 JIANG  Chong-Wen1, YANG  Jia-Shou2, LI  Ke-Nan1, GAO  Zhen-Xun1,LEE Chun-Hian1   

  1. (1NationalLaboratoryforComputationalFluidDynamics,BeihangUniversity,Beijing100191)
    (2GuizhouAero-engineResearchInstitute,Guizhou550081)
  • Received:2013-07-03 Revised:2013-10-19 Online:2014-04-25 Published:2014-04-25

摘要: 对类X-37B飞行器模型在50km高度以下不同飞行状态下的气动特性进行了数值模拟研究,将计算结果与航天飞机和X-34飞行器的试验结果进行了对比分析。结果表明,高马赫数大攻角再入飞行时,类X-37B飞行器和航天飞机的飞行升阻比相差不大,再入飞行横向机动能力相当。亚声速小攻角飞行时,类X-37B飞行器的升阻比大于航天飞机,小于X-34飞行器;说明类X-37B飞行器的低速机动和定点着陆能力强于航天飞机,弱于X-34飞行器。有翼再入飞行器气动布局差异对高超声速大攻角升阻比影响较小,对低速小攻角气动特性影响很大。

关键词: 数值模拟, 气动特性, 再入返回, 可重复使用飞行器

Abstract: The aerodynamic characteristics of an X-37B-like vehicle in different flight conditions were numerically studied under 50km altitude. The CFD results were analyzed with experimental results of the Space Shuttle and the X-34 vehicle. Numerical simulations indicate that the lift-to-drag ratio of the X-37B-like vehicle is slightly different from that of the Space Shuttle under high Mach number and large angle-of-attack reentry conditions, so the lateral maneuverability of the two vehicles is equivalent. Under subsonic and small angle-of-attack conditions, the lift to drag ratio of the X-37B-like vehicle is higher than the Space Shuttle and lower than that of the X-34 vehicle which indicates that the maneuverability at low speed and the fixed point landing ability of the X-37B-like vehicle are better than that of the Space Shutter but weaker than that of the X-34 vehicle. Configuration differences of winged reentry vehicles have little influence on the lift-to-drag radio of high Mach number and large angle of attack, and have obvious influence on thelift-to-drag radio of subsonic and small angle-of-attack.

Key words: Numericalsimulation, Aerodynamics, Reentry, Reusablespacecraft