摘要
机翼压心是机翼气动特性评估的重要参数,为采用应变法飞行载荷测量结果计算机翼压心坐标,由载荷地面校准试验原理对飞行载荷测量结果进行分析,在此基础上采用达朗贝尔原理分析了机翼结构在飞行过程中的受力情况,在低速小迎角条件下将机翼结构所受气动力与支反力、重力及惯性力的影响相分离,从而在所得到气动力及其所产生的弯矩和扭矩基础上对机翼压心进行计算。采用该方法对急剧对称拉起机动压心变化情况进行计算,结果与理论分析相符,表明该方法合理可行。
The pressure center is an important parameter in the aerodynamic evaluation of the wing.In order to calculate the pressure center with flight load measured by strain gauge,we analyzed the flight load measurement results based on the principle of load calibration test,and analyzed the load condition of the wing during flight with D’Alembert’s principle.The influence of aerodynamic forceon the wing was separated from the influence of reaction force,gravity and inertial force,and the pressure center was calculated based on the aerodynamic bending moment and torque.The pressure center change during abrupt pull up maneuver was calculated,and the result was identical with the theoretical analysis,which demonstrated the feasibility of this method.
作者
唐宁
白雪
TANG Ning;BAI Xue
出处
《现代机械》
2020年第1期46-50,共5页
Modern Machinery
关键词
飞行载荷
机翼压心
应变法
达朗贝尔原理
flight load
wing pressure center
strain method
D’Alembert’s principle
作者简介
唐宁(1989-),男,就职于中国飞行试验研究院,工程师;白雪(1989-),女,就职于中国飞行试验研究院,工程师。
