Abstract:

The background of developing large commercial aircraft was given.The hydraulic power systems of popular and new type commercial aircrafts from Airbus and Boeing Company were introduced. The future trends of hydraulic system for civil aircraft were outlined, namely high pressure, distributed system,DPHM(diagnostics,prognostics and health management),boostrap reservoir and intelligent pumping source system. The hydraulic power systems of A320
and B737 were compared and the two proposals of hydraulic power system for China commercial aircraft were brought forward. The key techniques of developing commercial
crafts, namely high reliability, pressure pulsation control, temperature control and contamination control were indicated.

Key words: aircraft;hydraulic power system;trend;proposal;key technique

摘要：

介绍了开展大飞机项目研制工作的背景和意义，分别阐述了当前空客公司与波音公司主流客机与新型客机的液压能源系统结构及特点。指出商用客机液压系统发展趋势的特点是高压化、分布式、故障诊断及健康管理、自增压油箱、智能泵源系统。对主流客机A320和B737的液压能源系统进行了对比分析，提出了2种大型客机液压能源系统方案。指出发展飞机液压能源系统尚需解决的关键技术问题——高可靠性液压系统设计、压力脉动抑制、油温控制、油液污染度控制等。

关键词: 飞机；液压能源系统；发展趋势；方案；关键技术