民机乘坐品质的概率指标及算法

 针对民用飞机在随机大气扰动下的乘坐品质问题，研究更符合实际的乘坐品质评价指标和方法。从大气紊流强度的概率特性出发，依据飞机对大气紊流响应与乘坐品质C准则之间的关系，推导了飞机乘坐品质C准则的概率指标公式。在此基础上，通过计算大气扰动的功率谱响应，给出了准则的计算方法，并以Boeing747飞机为例，具体说明了算法的实现和计算过程。所建立的乘坐品质的概率指标比传统的C指数更符合实际，计算方法简单有效，有工程实用价值。

Probabilistic Index and Calculation of Ride Quality for Civil Aircraft

A practical approach is proposed for analysis and evaluation of the ride quality of civil aircraft fight in atmospheric turbulence. From the probability density of atmospheric turbulence wind, the probabilistic index of ride quality is developed based on the relation between the standard C of ride quality and aircraft response to atmospheric turbulence. Furthermore, the calculation methodology of the probabilistic index is studied by calculating the aircraft power response to the turbulence. A numeric example is finally illustrated using the Boeing 747 data for demonstrating the realization process of the calculation methodology. The proposed approach is valuable in engineering because the substantial improvement of the proposed index with respect to the standard C is more practical and the calculation methodology is of facility.