Numerical Analysis of Integrated Forebody/Propulsion System of Aircraft
The integration of the airframe and its propulsion system is a key design issue in the development of military aircraft. Traditionally these two parts, airframe and propulsion system has been designed, analyzed and tested as isolated system. However with the increasing emphasis on the aerodynamic interaction between the inlet system and the engine, it has been recognized that significant improvements of the analysis can be realized by coupling the airframe and propulsion system. In the present work, an airframe-propulsion integrated analysis code, APIAC, has been developed and applied to the analysis of forebody-inlet and engine system. In the APIAC, the flow in the aircraft fore-body and inlet is solved by CFD simulation, which solves the RANS equations with turbulence modeling. And limited by the current computational capabilities the engine system is simulated with an 1 - D engine dynamic model, DYNPERS, which has been validated by experiment data. In order torealize the fully coupling of the inlet and engine system, flow information is extracted and exchanged at the Aerodynamic Interface Plane (AIP) at every physical time step. Then the fully coupling system is applied to predict the inlet flow field and engine performance in two kinds of rapid pitching with or without fuel mass flow increase. The time history of fluctuating engine performance such as thrust and SPC is recorded and compared. The comparisons show that this method is able to give a reasonable prediction of the airframe/propulsion system performance.
forebody/propulsion system integration fully coupling engine performance pitching maneuver
T1AN Jin-hu QIAO Wei-yang WEI Zuo-jun SHANG Ren-chao YANG Ying-kai
School of Power and Energy,Northwestern Polytechnical University,Xian, China School of Power and Energy,NorthwesternPolytechnical University,Xian, China Chengdu Aircraft Design &Research Institute,Chengdu, China
国际会议
4th International Symposium on Jet Propulsion and Power Engineering(第四届喷气推进与动力工程国际会议 ISJPPE2012)
西安
英文
630-637
2012-09-10（万方平台首次上网日期，不代表论文的发表时间）