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在飞行动力学模型基础上推导出民航飞机下降距离和时间的估算模型,以B737-800飞机性能软件计算结果为例,对影响参数进行了数据拟合分析,得到简化的下降性能参数计算模型。与飞机厂家提供的性能软件计算数据相比,在相同条件下,依据模型计算出的下降距离与理论值的偏差一般不超过2000 m,下降时间的估算偏差不超过1.0 min,满足连续下降运行研究的需要。
Based on the flight dynamics model, the estimation model of civil aviation aircraft descent distance and time is deduced. Taking the calculation results of B737-800 aircraft performance software as an example, the data fitting analysis of the influence parameters is carried out, and the simplified descent performance parameter calculation model is obtained. Compared with the calculated software performance data provided by aircraft manufacturers, under the same conditions, the deviation from the theoretical value calculated based on the model is generally not more than 2000 m, and the estimation error of the descent time is less than 1.0 min, satisfying the continuous descending operation Need.