[转贴] 美国空军的冲压喷气的空空导弹研究计划．

自己翻译的，不保证翻译的准确性，除了发帖之外，另一个目的是炼一下英语，为了过四六级准备．因此如有翻译的错误之处，请指出来，不胜感激，此外，本文的翻译没有逐字逐句，只是意译．
US Air Force eyes flight of ramjet missile

By Michael Sirak JDW Staff Reporter
Washington, DC

After decades of research, US Air Force engineers say they are now on the cusp of testing in flight a novel solid-fuelled propulsion system designed for next- generation air-to-air missiles.

However, standing in the way of them flight testing this Variable Flow Ducted Rocket (VFDR) system - a type of ramjet - is a lack of funding, since the missile work has to compete with more pressing service priorities. Nonetheless, engineers said they are hopeful that the funding will materialise in the next few years.

Developmental efforts by the Air Force Research Laboratory (AFRL) to date have matured the preliminary flight design of a VFDR-powered missile concept.

While Europe's MBDA is developing the ramjet-powered Meteor beyond-visual-range air-to-airmissile, the VFDR concept is the only US air-to-air system of this ilk.
The AFRL's 7 in-diameter VFDR model is in the same size class as the AMRAAM, and its inlets have been sized for compact carriage in the internal weapons bays of the F/A-22 Raptor and F-35 Joint Strike Fighter, in addition to other AMRAAM carriage concepts, said Fred Davis, technical director of the directorate's assessment and demonstrations division. The AFRL is "very encouraged" by the design, Davis told JDW.
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美国空军关注冲压发动机的空空导弹。
经过数十年的研究之后,美国空军的工程师们宣布他们正在的进行一项关于新型的固体燃料推进系统的研究计划已经接近成功了,此固体燃料推进系统将可以为下一代的空空导弹提供动力.
然而,就目前他们的研究情况来看,他们关于变流管道火箭的冲压发动机(冲压发动机的一种)的研究仍然缺乏长期保证（应该是这么翻译的吧，不保证这句的准确性）。他们需要取得美国空军对这种导弹系统的优先关注,然而工程师们对这种系统在今后几年内取得实用化表示乐观.
由于美国空军试验室的努力，采用这种动力的导弹设计方案已经初步成熟了。
当欧洲的导弹生产厂家MBDA在进行流星超视距空空导弹的开发工作的时候,这种系统是美国空军在相关领域的仅有的一个空空导弹研制计划.
美国空军研究试验室的七英寸的变流管道火箭的冲压发动机模型与美国空军的阿姆拉姆(AIM120)有着相同的尺寸.这种尺寸是能够适应F/A-22猛禽和F-35联合打击战斗机的机舱内挂架，佛瑞德.戴维斯说。他是这项计划的技术指导。
美国空军研究试验室受到了这项设计的非常大的鼓励，戴维斯说。【更多精彩内容请登陆：环球热讯社区[url]http://bbs.hqhot.com[/url]】原贴网址[url]http://bbs.hqhot.com/viewthread.php?tid=183925[/url]