CAJ | 학술논문

对类X-37B飞行器模型在50 k m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。
대류X-37B비행기모형재50 k m고도이하불동비행상태하적기동특성진행료수치모의연구，장계산결과여항천비궤화X-34비행기적시험결과진행료대비분석。결과표명，고마혁수대공각재입비행시，류X-37B비행기화항천비궤적비행승조비상차불대，재입비행횡향궤동능력상당。아성속소공각비행시，류X-37B비행기적승조비대우항천비궤，소우X-34비행기；설명류X-37B비행기적저속궤동화정점착륙능력강우항천비궤，약우X-34비행기。유익재입비행기기동포국차이대고초성속대공각승조비영향교소，대저속소공각기동특성영향흔대。
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 .