基于AR技术的某型初教飞机起落架设计及装配方法研究

Research on Landing Gear Design and Assembly Method for Elementary Education Aircraft Based on AR Technology

针对传统起落架设计周期长、过程繁琐的问题,采用增强现实(AR)技术设计与装配飞机起落架。首先,提取某型初教飞机起落架参数,考虑到起落架尺寸误差,引入最小二乘定位算法优化误差,从而构建起落架设计模型;其次,根据建模参数构建飞机起落架虚拟装配场景,并完成装配与检修;最后,进行飞机起落架扭力臂仿真测试。在扭力臂加速曲线的比较中,与优化前相比,优化后的前扭力臂稳定性提升了28.65%。在扭力臂动能曲线的比较中,优化后上下扭力臂动能均明显降低,优化后的上扭力臂动能降低了5.65%。在中轴旋转副标记点受力分析中,优化后该点受力下降到-42.6N,确保了飞机起落架的安全。所研究内容将为飞机起落架的研发与维护提供一定技术参考。

In response to the problems of long design cycles and cumbersome processes in traditional landing gear design,augmented reality(AR)technology is adopted to design and assemble aircraft landing gear.Firstly,extract the landing gear parameters of a certain type of novice aircraft,take into account the size error of the landing gear,introduce the least squares positioning algorithm to optimize the error,and thus construct a landing gear design model.Secondly,construct a virtual assembly scene for aircraft landing gear based on modeling parameters,and complete assembly and maintenance.Finally,conduct simulation testing of the aircraft landing gear torsion arm.In the comparison of torque arm acceleration curves,compared with before optimization,the stability of the optimized front torque arm has been improved by 28.65%.In the comparison of the kinetic energy curves of the torsion arms,the optimized kinetic energy of both the upper and lower torsion arms decreased significantly,with the optimized kinetic energy of the upper torsion arm reduced by 5.65%.In the force analysis of the central axis rotation pair marking point,the optimized force at this point decreased to-42.6 N,ensuring the safety of the aircraft landing gear.The research content will provide certain technical references for the development and maintenance of aircraft landing gear.