坡度和风速对跑道限制重量的影响

Effect of Field Slope and Wind Velocity on Field Limit Weights

为了分析跑道坡度和风速分量对最大起飞重量的限制,以某型民用运输机为例,确定了不同特定情况下的修正跑道长度和跑道限制重量,通过线性回归分析得到了跑道坡度和风速分量对修正跑道长度和跑道限制重量的影响规律。研究表明:上坡时修正跑道长度和跑道限制重量均小于无坡度时的数值,且修正跑道长度和跑道限制重量均随坡度增大而线性减小,下坡时结论与上坡相反;上坡时修正跑道长度和跑道限制重量随坡度的变化率明显大于下坡时的情况;顺风对修正跑道长度和跑道限制重量的影响与上坡的影响类似,逆风则与下坡的影响类似。

In order to analyze the limitation of runway slope and wind component on maximum toke-off weights （MTOW）, the corrected filed length and field limit weight （FLW） in varied conditions were determined for a civil transporter; and the laws how field slope and wind component influence corrected filed length and field limit weights were discussed by using linear regression analysis. The result shows that： the corrected runway length and field limit weight for upslope fields are larger than those for horizontal fields and they increase linearly with the slope; the law for downslope fields is reverse. Additionally, the change rates of corrected field length and field limit weight are larger for upslope fields than those for donwslope fields. The effect of tailwind is similar to that of upslope field while the effect of headwind is similar to that of downslope field.