民机货舱压差载荷的分析与解决方案

摘要

One-dimension model is built up for cargo differential pressure calculation in this article, and then the effect of cargo volume and cargo leakage areas on cargo differential pressure load is analyzed. Secondly, this article brief introduces the internal design guide of cargo pressure equalization equipment. And the configurations of pressure equalization valves equipped on China self-developed civil aircraft are presented then. At last, a novel solution of cargo differential pressure load is proposed. The outlet of cargo ventilation shut-off valve is considered to keep open in normal condition to achieve differential pressure relief for cargo. This novel solution will bring some decrease of A/C weight and cost.%本文建立了一维的货舱压差载荷计算方法，并对货舱容积和货舱等效泄漏面积等因素对货舱压差载荷的影响进行了分析。介绍了我国民机货舱压差平衡装置的设计准则，简介了我国自主研制的货舱压差平衡装置结构。最后提出了一种新颖的货舱压差载荷解决方案，即把货舱压差平衡功能集成至货舱出口关断活门中。该方案可减少一定的飞机重量，并节省原货舱压力平衡装置的研制成本。