近距平行跑道配对进近侧向碰撞风险评估

Assessment of lateral collision risk in closed spaced parallel runways paired approach

为研究近距平行跑道配对进近侧向碰撞风险及相关参数对碰撞风险的影响，首先分析飞机位置误差的影响因素；其次基于配对进近的2架飞机实际运行过程和尾流避让的要求，考虑侧向误差概率密度函数截断补偿系数，建立近距平行跑道配对进近侧向风险评估模型；然后计算不同实际导航性能（ANP）条件下的侧向碰撞风险值；最后编制ANP数值表，并建议配对飞机速度差不超过7．5m／s，初始安全间隔为1000～1200m。结果表明，后机采用进近偏角可以有效降低对ANP的要求；大风速时，侧向碰撞风险对风向更敏感。

The paper was aimed at building a model for assessing lateral collision risk in closed spaced parallel runways paired approaches. To build the model, the actual moving process of the paired aircrafts, the requirements for wake avoidance during paired approach and the truncation compensation coefficient of the lateral error probability density function were considered and analyzed. And then values of the lateral collision risk were calculated for different conditions of ANP using the model. At last an ANP numerical table was compiled and the proposed values of the velocity difference and the initial safety interval of the paired aircraft were given. The result shows that the approach angle of the later aircraft can effectively reduce the demand of ANP and under the condition ofstron~ wind. the collision risk is more ,qensitive to the wind direetinn