摘要
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。
Based on the civil airplane＇s take-off performance,calculation for lift-drag characteristics for take-off configuration is provided.Through the physical analysis of take-off process,the dynamic analysis of typical stages and the calculation of aerodynamic coefficients,the civil airplane＇s lift-drag characteristics including the influence of ground effect are obtained.Referring to the stall characteristics of civil airplane in similar model and configuration,lift characteristics are nonlinearly amended.Take B737-300 civil airplane for an example.The calculation result shows that this method exhibits precision and engineering practicality in a certain extent and can be used in the contrastive calculation and analysis for different civil airplanes.
出处
《飞行力学》
CSCD
北大核心
2011年第1期1-4,共4页
Flight Dynamics
关键词
起飞性能
升阻特性
失速特性
非线性修正
take-off performance
lift-drag characteristic
stall characteristics
nonlinear amend
