飞机起飞和着陆所需滑跑距离计算方法中参数值的试验分析

目前，计算飞机滑行距离的理论公式需要许多参数值，这些参数值通常采用线性内插法和随机取样法得到，但综合修正系数（IMC）却要基于飞机的滑跑长度列线图。由于公式中的IMC取决于试验数据，用激光测距仪和经纬仪对飞机的滑跑距离进行了220次测试。试验分析结果表明:飞机起飞时的IMC介于1.000～1.099之间，而着陆时的IMC介于1.468～1.699之间。由此可见，飞机着陆滑跑长度的离散性较起飞时大。

Experimental Analysis on Parameters Required in Calculation of Taxiing Distance for Airplane's Taking-off and Landing

Presently, the theoretical formula calculating taxiing distance of airplane require many parameters which are generally obtained by linear interpolation method or random sampling method; however, integrated modifying coefficient (IMC) is based on taxiing length nomograms of airplane. Since the IMC in the formula depends on test data, the taxiing distance were tested for 220 times with laser range finder and theodolite. The experimental analysis result shows that the IMC is, in case of taking-off, from 1,000 and 1,099; and in case of landing, from 1,468 to 1,699, demonstrating that the discreteness of taxiing distance in landing is greater than that in taking off. This conclusion may provide reference to the calculation of taxiing distance for airplane's taking-off and landing.