论文部分内容阅读
针对民机起飞构型,建立了一种利用飞机的起飞性能推算其升阻特性的工程计算方法。通过对民机起飞过程的物理分析以及对特殊飞行阶段和典型飞行状态点的动力学分析与气动力参数计算,推算出计入地面效应的民机升阻特性;参考同类飞机的失速特性,对推算得到的升力曲线进行非线性修正。以B737-300民机为算例的计算结果表明,该推算方法具有一定的精准度和工程实用性,可用于不同民机型号的气动特性对比计算和分析。
Aiming at the take-off configuration of civil aircraft, an engineering calculation method was developed to calculate its lift-resistance characteristics by taking off the aircraft. Through the physical analysis of take-off process of civil aircraft and the dynamic analysis and calculation of aerodynamic parameters for special flight stages and typical flight state points, the lift resistance characteristics of civil aircraft that take into account the ground effect are deduced. With reference to the stall characteristics of similar aircraft, Calculated lift curve for non-linear correction. The calculation results based on the B737-300 civil aircraft show that the estimation method has certain accuracy and engineering practicability and can be used to calculate and analyze the aerodynamic characteristics of different civil aircraft models.