Body freedom Flutter of a blended Wing body Model coupled with Flight Control System

摘要：

　　Aeroservoelastic model is developed for a blended wing body aircraft coupled with flight control system.Body freedom flutter of such aeroservoelastic system is analyzed and trend studies considering varied loop gain value,center of gravity of the balanced weight and wing stiffness are delivered to determine their influence on body freedom flutter characteristics of this aeroservoelastic system.It is found that the closed loop flutter speed decreases dramatically compared to that of the open loop case.The loop gain value and the wing stiffness have strong influence on the closed loop flutter characteristics.It is noted that the static unstable unaugmented blended wing body aircraft can be stabilized by proper designed flight control system,however,the closed loop body freedom flutter speed is still quite low which needs further consideration in flight control system synthesis.

关键词： Flutter Flying wing Body freedom flutter Flight control system Aeroservoelasticity

作者: Gu Yingsong Yang Zhichun He Shun

作者单位: Institute of Structural Dynamics and Control,Northwestern Polytechnical University,P.O.BOX 118,youyi xilu No.127,Xian 710072,China

会议类型: 国际会议

会议名称: 2014 Asia-Pacific International Symposium on Aerospace Technology(2014亚太航空航天技术学术会议)

会议地点: 上海

会议语种:英文

页码: 1-5

在线出版日期: 2014-09-24（万方平台首次上网日期，不代表论文的发表时间）