Design and analysis of a hypersonic inlet with an integrated bump/forebody  

作　　者：Shangcheng XU Yi WANG Zhenguo WANG Xiaoqiang FAN Xingyu ZHAO 

机构地区：[1]Science and Technology on Scramjet Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology

出　　处：《Chinese Journal of Aeronautics》2019年第10期2267-2274,共8页中国航空学报（英文版）

摘　　要：Numerical simulations and experiments showed that bump inlet had a remarkable effect on boundary layer diversion of supersonic flow.However,the design and analysis of bump in hypersonic flow was still few.In this paper,the mechanism of a supersonic bump inlet is introduced to the design of hypersonic forebody.A hypersonic inlet with an integrated bump/forebody is obtained by the Method Of Characteristics(MOC)based on a chin inlet.Numerical simulations show that the modified inlet achieves diversion of low-speed flow.Besides,the integrated bump/-forebody is also beneficial to inlet start.During the starting process,the shape of the separation zone is rebuilt by the modified forebody surface which makes spillage much easier.This new design leads to a reduction of the self-start Mach number by 0.95.Numerical simulations and experiments showed that bump inlet had a remarkable effect on boundary layer diversion of supersonic flow.However, the design and analysis of bump in hypersonic flow was still few.In this paper, the mechanism of a supersonic bump inlet is introduced to the design of hypersonic forebody.A hypersonic inlet with an integrated bump/forebody is obtained by the Method Of Characteristics(MOC) based on a chin inlet.Numerical simulations show that the modified inlet achieves diversion of low-speed flow.Besides, the integrated bump/-forebody is also beneficial to inlet start.During the starting process, the shape of the separation zone is rebuilt by the modified forebody surface which makes spillage much easier.This new design leads to a reduction of the self-start Mach number by 0.95.

关 键 词：HYPERSONIC INLETS INLET START Integration design Method Of Characteristics(MOC) Separation zone 

分 类 号：O36[理学—流体力学]