民用航空涡轮发动机持久试验条款发展历程

Development history of civil turbine engine endurance test requirements

全面回顾了航空发动机适航规章CCAR-33R2第33.87条持久试验的演变历程,在解读适航规章条款要求的基础上,深入跟踪了当前国际上针对33.87条持久试验的研究动态。跟踪研究发现,自1957年规定了6 h×25阶段的150 h试验谱以来,涡轮发动机持久试验的主体要求基本保持不变,而涡轮发动机设计则出现了显著的发展。发动机设计技术的进步带来了与适航规章要求不协调的问题,针对该问题当前国际上已开展了150 h持久试验替代试验的探索性研究及应用,虽然现阶段还存在一系列问题有待澄清和解决,但相关研究为我国民用航空发动机适航符合性方法及适航标准制定与修订提供了参考和借鉴。持续深入跟踪国内外适航技术动态,及时采取积极的应对策略,并开展有针对性的条款研究工作,对于提升我国适航技术规章的编制和修订能力具有十分重要的意义。

The development history of 33.87 endurance test in aero-engine airworthiness standards CCAR-33 R2 was comprehensively reviewed. Based on the interpretation of airworthiness regulation requirements, the current research of 33.87 endurance test in the world was deeply tracked. It showed the endurance test requirement remained essentially unchanged since 1 957 when the current 6 hour×25 cycles formats were implemented, but turbine engine designs had evolved significantly. The progress of engine design technology brought incompatibility with airworthiness regulations, so exploratory research and application on alternative test of 150 hour endurance test was carried out in the world. Despite of some existing issues for clarifications, the relevant research can provide reference for the accepted compliance method research and the airworthiness standard formulation and revision in China. It is of great significance for improving the compilation and revision ability about China’s airworthiness technical regulations to track domestic and international airworthiness technology trends continuously and deeply, and then take positive response strategies timely and carry out targeted research on relevant provisions.