扑翼飞行器测力平台设计与振动特性仿真分析

扑翼飞行器是基于鸟类仿生学理论衍生出的新型无人飞行器,主要通过机翼周期性上下扑动来提供飞行器所需的升力和推力,在军用和民用飞行器领域均有广阔的应用前景。扑翼飞行器气动力测量作为样机气动性测试的重要手段,多维气动力的准确测量可为新型扑翼飞行器设计优化和飞控品质的提高提供试验数据支持。本文介绍了一种新型组合式多维小量程测力平台,可实现扑翼飞行器六维气动力和气动力矩的测量。考虑到扑翼飞行器机翼上下扑动过程动态测力需求,应用Ansys Workbench有限元分析软件对测力平台进行了模态分析和频响分析,获得在工作频率下的频率响应,仿真结果表明测力平台的振动特性满足设计要求。

Design and Vibration Characteristics Analysis of Force Measuring Platform of Flapping Wing Aircraft

Flapping wing aircraft is a new type of unmanned aerial vehicle derived from the theory of bird bionics. The periodic flapping of the wing provides the lift and thrust forces that are required by the aircraft. This new aircraft has a wide application prospect in the field of military and civil aircrafts. The aerodynamic measurement of the flapping wing aircraft is an important means for the aerodynamic testing. The accurate measurement of the multi-dimensional aerodynamic force can provide the experimental data for the optimization of the new flapping wing design and the improvement of the flight control quality. This paper introduces a new modular multi-dimensional small-scale dynamometer platform, which can realize the measurement of six-dimensional aerodynamic and aerodynamic moments of flapping wing aircraft. Considering the purpose of measuring dynamic force load of flapping wings, the Ansys Workbench finite element analysis software was used to analyze the modal and frequency response of the dynamometer platform, and the frequency response is obtained at the working frequency. The vibration characteristics of the force platform meet the design requirements.