某型飞机垂直安定面-方向舵关键参数对模态频率影响的研究  

Influence of Key Parameters of Vertical Tail Stabilizer-Rudder on Modal Frequencies of a Certain Type of Aircraft

作　　者：张大千[1] 杨凯 李智涵 ZHANG Daqian;YANG Kai;LI Zhihan(Shenyang Aerospace University,Shenyang 110136,China)

机构地区：[1]沈阳航空航天大学,沈阳110136

出　　处：《装备环境工程》2024年第9期26-33,共8页Equipment Environmental Engineering

基　　金：辽宁省“兴辽英才计划”(XLYC2203197)。

摘　　要：目的 研究飞机垂直安定面-方向舵装配参数对固有频率的影响。方法 通过有限元模型分析,研究铰链轴位置变化和舵机刚度调整对垂尾安定面-方向舵模态频率的影响。结果 下铰接点偏移对方向舵频率的影响最大,频率随偏移量增加而降低,最大降低0.36 Hz;上铰接点次之,前3阶频率降低,第4阶频率增加,最大变化量分别为0.203、0.08 Hz;中铰接点影响最小,频率变化微小,最大为0.028 Hz。增加舵机刚度时,前4阶频率均上升,但前3阶在刚度增加5倍以下时上升较快,超过5倍后趋于稳定,而前2阶频率受刚度的影响不大。第4阶频率在刚度增加10倍以下时明显上升。结论 垂尾安定面与方向舵的连接铰链在装配时不同轴,下铰接点偏移,对垂尾结构的前4阶模态频率的影响最大,上铰接点偏移次之,中铰接点偏移对垂尾结构的前4阶模态频率没有影响。舵机的刚度增加,垂尾的前4阶模态频率增加,对第3、4阶模态的影响尤为显著。The work aims to study the effect of vertical tail stabilizer surface-rudder assembly parameters on the intrinsic frequency of an aircraft.The effects of hinge axis position change and rudder stiffness adjustment on the modal frequency of the vertical tail stabilizer-rudder were investigated by finite element model analysis.The results showed that the lower articulation point offset had the largest effect on the rudder frequency,and the frequency decreased with the increase of offset,with a maxi-mum decrease of 0.36 Hz;The effect of the upper articulation point was the second largest,and the frequency decreased in the first three orders and increased in the fourth order,with the maximum changes of 0.203 Hz and 0.08 Hz,respectively;The mid-dle articulation point had the smallest effect,and the change of the frequency was tiny,with the maximum being 0.028 Hz.When the rudder stiffness was increased,the frequency in the first four orders rose,but the first three orders rose faster when the stiffness was increased by less than 5 times,and was stabilized after more than 5 times;while the first two orders of frequency were not much affected by the stiffness.The fourth order frequency rose significantly when the stiffness was increased by less than 10 times.In conclusion,the connection hinge between the vertical tail stabilizer and the rudder is assembled with different axes,and the lower hinge point offset has the greatest effect on the first four modal frequencies of the vertical tail structure,fol-lowed by the upper hinge point offset,and the middle hinge point offset has no effect on the first four modal frequencies of the vertical tail structure.The increase in the stiffness of the rudder increases the frequency of the first-fourth order models of the vertical tail,and the effect on the third-and fourth-order models is particularly significant.

关 键 词：垂尾安定面 方向舵 连接铰链 舵机 装配参数 模态频率 

分 类 号：V214.33[航空宇航科学与技术—航空宇航推进理论与工程]