涡桨飞机整机振动响应预计与乘员舒适性评估

The whole vibration response prediction and body comfort evaluation of turboprop aircraft

为了在设计阶段预估涡桨飞机的振动水平并分析舱内振动环境的影响,亟需建立一套全机级振动响应预计与评估技术。从人体舒适性和健康风险指标出发,建立涡桨飞机振动控制设计流程,识别关键环节及要素。研究解决振动载荷获取、振动分析模型建立、振动响应计算、舱内振动环境评估等核心问题。通过全机地面共振试验和缩比模型振动响应测试风洞试验结果,验证了整机振动分析模型和振动响应计算方法的准确性。所建立的方法、实施流程和途径可为涡桨飞机的振动控制正向设计提供参考。

A technical method to predict and evaluate the whole vibration response of turboprop aircraft is established in order to estimate the vibration response level and analyze the effect of interior vibration environment.Combining model-based system theory with human body vibration comfort and health risk standardization,a vibration control design flow chart of turboprop aircraft is drawn,in which the key links and elements are identified.This paper tries to solve some key problems including how to obtain vibration loads,create vibration analysis model,simulate vibration response and evaluate vibration environment in cabin.The validity and accuracy of vibration analysis model and vibration response calculation method of the whole aircraft are verified with the deviations between the analyzed results and the ground vibration test or the vibration response measurement wind tunnel test results.The above methods,implementation process and approach provide some reference for the vibration control forward design of turboprop aircraft.