轻型通用飞机主要总体参数初步计算程序

摘要

应用Matlab编程技术开发一种面向轻型通用飞机总体参数分析程序,用于其概念设计中主要参数的确定.根据性能设计要求,建立功重比与翼载荷之间的关系函数,绘制界限线图,确定功重比与翼载荷.根据飞机任务剖面,估算最大起飞重量、使用空重和设计燃油重量.程序具有良好的人机交互界面,用户只需输入性能要求以及一些预估参数,就可确定轻型通用飞机主要总体参数.用典型的单发轻型飞机和双发轻型飞机作为算例来验证程序,结果表明:基于程序的设计结果与验证机型的主要总体参数基本一致.%A computer program using MATLAB is developed for initial sizing in the conceptual design of light general aviation aircraft.According to performance requirements,the relationships between power-to-weight ratio and wing load are presented,and a graph with constraint boundary is generated.Based on the graph,the power-to-weight ratio and wing load can be selected.According to mission profile of air-craft,the maximum takeoff weight,operating weight,and designed fuel weight can be predicated.The pro-gram has a user-friendly interface,in which only design requirements and pre-estimated parameters are needed to be input by users and then primary parameters of aircraft can be determined by the program. Two typical examples of single engine and twin engine light aircraft are used to verify the program.The re-sults show that primary conceptual design parameters determined by the program are consistent with those of actual aircraft.