南京航空航天大学学报2017，Vol.49Issue(2)：225-230,6.DOI:10.16356/j.1005-2615.2017.02.012
嵌入式挥舞吸振器对旋翼桨叶挥舞载荷的抑制研究
Flapwise Load Reduction of Rotor Blades by Embedded Flapwise Absorbers
摘要
Abstract
In order to suppress the second harmonic flapwise loads of stiff in-plane rotor blades,the dynamic absorbers need to be embedded in the blade cavity in the blade flapwise direction.To investigate the effect of the embedded absorber in the flapwise direction of the rotor blade on the second harmonic moment,the coupled dynamic model of rotor blade and flapwise dynamic absorber is established.The differential equations of motion of the rotor blade coupling system with flapwise absorber are derived by using the Lagrange equation.The comparison of load suppression effect of fluidelastic absorber and elastic absorber in blade flapwise direction on blade root is conducted.And the structural parameters affect ing the absorber performance and the dynamic characteristics of flapwise absorber in rotating state are analyzed.The study shows that the natural frequency of flapwise absorber is not changed when it is rotating or not.Both fluidlastic absorber and elastic absorber can achieve good effect on reducing lower harmonic loads in the direction of flapwise of the blade,but the stroke of fluidlastic absorber is significantly less than that of the elastic absorber.关键词
刚性旋翼/挥舞载荷/抑制/动力吸振器/参数分析Key words
stiff rotor/flapwise loads/suppress/dynamic absorber/parameter analysis分类
航空航天引用本文复制引用
魏武雷,韩东..嵌入式挥舞吸振器对旋翼桨叶挥舞载荷的抑制研究[J].南京航空航天大学学报,2017,49(2):225-230,6.基金项目
国家自然科学基金(11472129)资助项目 （11472129）
航空科学基金(20165752048)资助项目 （20165752048）
直升机旋翼动力学国家重点实验室基金(6142220050416220002)资助项目 （6142220050416220002）
江苏省高校优势学科建设工程资助项目. （）
