Effects of Geometric Parameters on Performance of Rectangular Submerged Inlet for Aircraft

作     者：LIU Chao PEI Houju CHEN Changdong XU Wenbing YANG Kaijie 刘超;裴后举;陈常栋;徐文冰;杨凯杰

作者机构：Environment Control and Oxygen System DepartmentShanghai Aircraft Design and Research InstituteShanghai 201210P.R.China AVIC Nanjing Servo Control System CorporationNanjing 210016P.R.China College of Energy&Power EngineeringJiangsu University of Science and TechnologyZhenjiang 212003P.R.China Key Laboratory of Aircraft Environment Control and Life SupportMIITNanjing University of Aeronautics and AstronauticsNanjing 210016P.R.China 

出 版 物：《Transactions of Nanjing University of Aeronautics and Astronautics》 (南京航空航天大学学报（英文版）)

年 卷 期：2021年第38卷第6期

页      面：984-992页

核心收录：

学科分类：08[工学] 082504[工学-人机与环境工程] 0825[工学-航空宇航科学与技术] 

基　　金：supported by the Open Project of Key Laboratory of Aircraft Environment Control and Life Support MIIT(No.KLAECLS-E-202001) 

主　　题：ram air system rectangular submerged inlet geometric parameter mass flow rate(MFR) 

摘      要：To improve the comfortability and safety of aircraft,the demand of rectangular submerged inlets(RSIs)with low resistance is proposed to increase the inlet flow rate of ram air. A theoretical model is built to numerically analyze the effects of geometric parameters on the inlet mass flow rate of RSIs. The geometric parameters in question here encompass the aspect ratio of 2—4,the ramp angle of 6°—7°,the characteristic parameter of the throat of 0.20 —0.30,the ramp length of 939—1 337 mm,and the cone angle of 0° —3°. Simulation results demonstrate that the mass flow rate(MFR)is positively correlated with the aspect ratio,ramp angle,ramp length,and cone angle,and negatively correlated with characteristic parameter of the throat. Within the range of the geometric parameters considered,the RSI with the aspect ratio of 3,the ramp angle of 6°,the characteristic parameter of the throat of 0.20,the ramp length of 1 337 mm,and the cone angle of 3° obtains the largest MFR value of about 2.251 kg/s.