类X-37B飞行器气动特性的数值研究  

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

作　　者：蒋崇文[1] 杨加寿[2] 李克难[1] 高振勋[1] 李椿萱[1] 

机构地区：[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

出　　处：《中国空间科学技术》2014年第2期36-44,共9页Chinese Space Science and Technology

基　　金：国家高技术研究发展计划(863)资助项目

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。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 .

关 键 词：数值模拟 气动特性 再入返回 可重复使用飞行器 

分 类 号：V217.4[航空宇航科学与技术—航空宇航推进理论与工程]