飞机航段油耗区间估计最小样本量分析

摘要

To solve the problem that how to determine the QAR data sample size when interval estimating the fuel consumption of fixed plane model and fixed flight segment based on QAR data ,a method of solving and testing the minimum sample size in aircraft segment fuel consumption interval estimation was put forward .Since the fixed plane model and fixed flight segment fuel consumption samples met the normal distribution ,on the premise of satisfying the estimation accuracy and meeting the given con‐ditions of significant levels ,the minimum sample size of segment fuel consumption interval estimation was derived ,and the chi‐square test method was used to verify the minimum sample size ,the minimum probability was obtained which the minimum sam‐ple size required .An example was given to verify the validity of the method .The method provides a reference for the airlines to estimate the fuel consumption of fixed plane model and fixed flight segment .%为解决基于QAR数据进行固定机型固定航段油耗区间估计时如何确定QAR数据样本量的问题，提出一种飞机航段油耗区间估计最小样本量的求解及检验方法。根据固定机型固定航段油耗样本满足 N（μ，σ2）正态分布，在满足给定估计精度和显著水平的条件下，推导航段油耗区间估计应满足的最小样本量，利用χ2拟合检验法对最小样本量进行验证，得到最小样本量成立的最小概率要求。通过实例验证了该方法的有效性，为航空公司进行固定机型固定航段油耗估算提供了可行的参考方法。