轻型通用飞机发动机功率估算方法

在轻型通用飞机总体设计阶段的参数设计中,快速准确地预估发动机总功率数值是其重要的一步.选定发动机型号,根据设计目标与适航要求等约束条件,统计大量轻型通用飞机的相应总体参数数据与发动机信息,研究得出经验公式及参数之间的函数关系,计算发动机总功率的对应取值区间.结果表明:在同时满足设计目标与适航要求的约束条件下,可获得发动机总功率数值的取值交集,对更加快速准确地选出合适的发动机具有重要的指导作用.

Approach to estimate power of light aircraft

In order to estimate power of light aircraft quickly and accurately and to decide engine model at the beginning of the concept design phase, design target and airworthiness need to be satisfied. According to performance parameter and engine information statistics of multiple light aircrafts, empirical formula and functional relationship between parameters are concluded, we can calculate the internal values of power . The result show that consideration of design target and airworthiness elicit the final intersection of value, which is useful for applicant engine selection