基于自适应起落架的旋翼飞行器着陆稳定性分析  

Landing Stability Analysis of Rotorcraft Based on Adaptive Landing Gear

作　　者：梁伟华 朱赫 尹乔之[1] 周乐 魏小辉[1] 聂宏[1] LIANG Wei-hua;ZHU He;YIN Qiao-zhi;ZHOU Le;WEI Xiao-hui;NIE Hong(Nanjing University of Aeronautics and Astronautics,Nanjing 211000,China)

机构地区：[1]南京航空航天大学,江苏南京211000

出　　处：《航空计算技术》2023年第4期38-41,共4页Aeronautical Computing Technique

基　　金：国家自然科学基金(52275114、52202443);国防卓越青年基金项目资助(2018-JCJQ-ZQ-053);江苏省自然科学基金项目资助(BK20220898);中央高校基本科研业务费项目资助(NJ2022008);江苏省卓越博士后计划项目资助(JB0202003);南京航空航天大学前瞻布局科研专项项目资助。

摘　　要：传统起落架在复杂地形条件下存在着陆困难的问题,而自适应起降装置的引入能够有效提高旋翼飞行器的地形适应能力,但其着陆稳定性分析也变得更加复杂。当旋翼飞行器在着陆过程中姿态倾斜较大时,存在严重的安全隐患。因此,采用了一种应用于旋翼飞行器的新型自适应起落架,建立了其着陆动力学模型,并综合考虑了地况、飞行器着陆位姿状态、足端-地面摩擦力以及着陆速度等的影响。通过Simcenter3D进行全机着陆动力学仿真试验,得到了该构型自适应起降飞行器在不同速度和坡角条件下的着陆稳定边界。结果表明:相较于传统起落架,自适应起落架使旋翼飞行器可适应的地形坡角增大了50%,着陆稳定边界扩大了122%,有效提高了旋翼飞行器的地形适应能力和着陆稳定性。The traditional landing gear has the problem of difficult landing in complex terrain conditions,and the introduction of adaptive landing device can effectively improve the terrain adaptation ability of rotorcraft,but its landing stability analysis becomes more complicated.When the rotorcraft has a large attitude inclination during landing,there is a serious safety hazard.Therefore,a new adaptive landing gear for rotorcraft is presented in this paper and establish its landing dynamics model,in which the effects of ground conditions,landing posture,foot ground friction and landing speed are taken into account.The full aircraft landing dynamics simulation test were carried out by Simcenter3D,and the landing stability boundary was obtained based on different speeds and slope angles.The results show that,compared with the conventional landing gear,the adaptive landing gear can increase the terrain slope Angle of the rotorcraft by 50%,and the landing stability boundary is extended by 122%,which effectively improves the terrain adaptation ability and landing stability of the rotorcraft.

关 键 词：着陆稳定性 旋翼飞行器 自适应起落架 着陆动力学仿真试验 

分 类 号：V249.1[航空宇航科学与技术—飞行器设计]