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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。
Currently, the theoretical formula for calculating the taxiing distance of an airplane requires a number of parameter values, which are usually obtained using linear interpolation and random sampling, but the integrated correction factor (IMC) is based on the aircraft’s run length collinear chart. Due to the fact that the IMC in the formula depends on the experimental data, 220 tests of the aircraft’s skating distance were carried out with laser rangefinder and theodolite. The experimental results show that the IMC at the time of takeoff is between 1.000 and 1.099, while the IMC at landing is between 1.468 and 1.699. As can be seen, the discreteness of aircraft landing slip length is greater than that at take-off.