国 上游夏大学 SHANGHAI JIAO TONG UNIVERSITY HALE UAV DESIGN CONCEPTUAL DESIGNOF A HIGH ALTITUDE LONG ENDURANCE UAV ABSTRACT This paper presents the conceptual design process of a high altitude long endura nce unmanned aerial vehicle (HALE UAV).The HALE UAV is mainly used to carry out high reconnaissance,besides it can be used in airborne early warning, communications relay,electronic jamming and head off theater ballistic missiles etc.However,China's army have no such a high altitude,long endurance UAV which can beats US RQ4A.Therefore,we brought up this program.Following t he principles of aircraft conceptual designing,the authors complete configuratio n design,weight estimation,aerodynamic design,power plant design,performa nce analysis and economy analysis step by step.All in all,we try to present to re liable,economic and efficient UAV. Keyword:HALE,UAV,conceptual design -2-HALE UAV DESIGN - 2 - CONCEPTUAL DESIGNOF A HIGH ALTITUDE LONG ENDURANCE UAV ABSTRACT This paper presents the conceptual design process of a high altitude long endura nce unmanned aerial vehicle (HALE UAV). The HALE UAV is mainly used to carry out high reconnaissance, besides it can be used in airborne early warning, communications relay, electronic jamming and head off theater ballistic missiles , etc. However, China’s army have no such a high altitude, long endurance UAV which can beats US RQ4A. Therefore, we brought up this program. Following t he principles of aircraft conceptual designing, the authors complete configuratio n design, weight estimation, aerodynamic design, power plant design, performa nce analysis and economy analysis step by step. All in all, we try to present to re liable, economic and efficient UAV. Keyword: HALE, UAV, conceptual design