直升机高置信度中值使用飞行谱编制方法

Helicopter Median Flight Spectrum with High Confidence Level

摘要:

依据直升机使用寿命分布规律,在高置信度条件下,提出了飞行谱编制的最小样本容量准则。在此基础上,采用科目统计和飞行状态分解技术,基于单机 10年统计分析的方法,研究了直升机高置信度中值使用飞行谱编制原理,以此编制的使用飞行谱具有一定的置信区间,能够真实地反映直升机单机短期执行任务的分散性和整个机群长期服役的规律性,为研究直升机关键动部件的损伤与直升机定寿提供依据。

Abstract:

Based on the probability distribution of the helicopter’s service life, a minimum sample size criterion for flight spectrum with high confidence level was designed. Flight statistics and state analysis method was used to analyze flight statistics of 10 years, and the principle for compiling median flight spectrum with high confidence was also studied to compile actual flight spectrum, which reflected the flight charateristics of both the randomness in a short term and the regularity in the long term, thus the damage and service life of the helicopter could be calculated.