基于飞机全尺寸模型的机场道面平整度评价理论研究

Research on the Airport Pavement Roughness Evaluation Based on Full Aircraft Model

针对国际平整度指数IRI在机场道面平整度评价中存在的问题,提出综合考虑道面左右主轮迹带、滑行中线的不平整情况对飞机滑行过程中振动的影响的机场道面平整度评价方法。以飞机全尺寸模型替代目前的1/4车模型,建立飞机六自由度振动方程,以跑道中线左右两个主轮迹带及跑道中线3条测线的道面高程作为输入,通过求解飞机六自由度振动方程得到飞机的横向滚转量、纵向俯仰量以及质心处的竖向振动位移量,在此基础上提出机场道面平整度评价指标-FARI(Full Aircraft Roughness Index)及道面平整度评价流程。希望本文工作能对机场道面平整度评价提供有益参考。

To solve the problems existing in the evaluation of airport pavement roughness when using international roughness index IRI, the article put forward a new airport pavement roughness evaluation method considering the influence of all three wheel track belt to aircraft vibration in taxiing. Using the full scale aircraft model to replace the present quarter car model, building aircraft six freedom degree vibration equation, taking the altitude of all three wheel track belt line as input, getting the amount of transverse roll, longitudinal pitch and vertical vibration displacement of the centroid by solving the equa- tion, with this as basis,it proposed a new Evaluation index-FARI（ Full Aircraft Roughness Index） and its corresponding pavement roughness evaluation procedure. Hope this work can provide a beneficial reference to the airport pavement roughness evaluation.