基于气动相似预估旋翼桨叶气动力的方法  

AN APPROACH OF PREDICTING ROTOR BLADE AIRLOAD BASED ON AERODYNAMIC SCALE

作　　者：康浩[1] 刘守慎 

机构地区：[1]南京航空航天大学飞行器系,南京210016

出　　处：《航空学报》1996年第2期218-221,共4页Acta Aeronautica et Astronautica Sinica

摘　　要：提出气动相似情况下旋翼桨叶气动力的转换方法。由此可利用已有旋翼或模型旋翼桨叶的实测内力预估未知旋翼相关状态的气动力。该方法基于旋翼桨叶载荷识别、相似转换和旋翼桨叶动力响应分析 ,将旋翼桨叶气动力分解为与桨叶位移相关和无关的分量后 ,由于气动相似的旋翼间与桨叶位移无关的气动力相等 ,即可实现气动相似动力不相似旋翼间气动力的转换、预估。以桨叶挥舞方向为例 ,导出稳定飞行状态下旋翼桨叶气动力转换、预估方程。An approach of the rotor blade loads transference is presented in this paper. This approach,based on load identification, transference and dynamic response analysis, utilizes the measured strains of aerodynamically scaled model rotor blade or of known rotor blade to obtain the unknown rotor blade loads. The airloads of blade are considered as a combination of two parts: one is the function of the deflections of blade and the other,which is equal for two aerodynamic scale blades, is independent of them. The equality of loads, which is not the function of blade deflections, of two blades makes the blade loads transferred. For blade flap airloads of steady flight, the transference equations are derived. Finally, this approach is verified by the rotor blade test results.

关 键 词：旋翼 浆叶 气动力 相似律 

分 类 号：V211.52[航空宇航科学与技术—航空宇航推进理论与工程]