美国福特宇航与通信公司和联合技术公司化学系统分部,于去年年底对地空导禅用的一体化固体火箭冲压式喷气发动机的设计原理进行了试验。这次试验是这两家公司协作实验计划的一个组成部分。 冲压式喷气发动机利用周围的空气作为氧化剂,与一般火箭推进剂相比,可使冲量提高4～5倍,但导弹的气动阻力和复杂性会有所增加。 At the end of last year, the aerospace and communications company of the United States and the chemical systems division of United Technologies Corp. experimented with the design principles of the integrated solid rocket ramjet engine used in the field. The trial is part of a collaborative pilot program between the two companies. Pressurized jet engines make use of the ambient air as an oxidizer, which increases the impulse by four to five times compared to a typical rocket propellant, but increases the aerodynamic drag and complexity of the missile.