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SR-72是美国洛克希德·马丁公司臭鼬工厂正在研制的经济可承受的高超声速飞行器,集情报、监视和侦察于一体。采用双发设计的SR-72的巡航速度将达到马赫数6.0,预计2018年进入验证机研制阶段。根据美国空军高超声速长期路线图,该机的设计将用于替代SR-71,填补现有卫星、亚声速有人/无人平台在决速反应情报方面日益显现的能力缺陷。从公开发表的信息看,SR-72将采用并联式TBCC动力。臭鼬工厂与洛克达因公司共同合作,开发实现现有涡喷发动机与超燃冲压发动机集成的方法,从而实现飞行器从0加速至马赫数6.0以上,但面临着如何解决现有涡喷发动机最大工作马赫数2.5,与亚燃/超燃冲压发动机启动马赫数3.0-3.5之间的动力接力问题。设计人员将其称之为马赫数3.0附近的推力鸿沟。据最近大量的报道和近年来对下BCC的研究,解决推力鸿沟问题可能的方案有:首先是采用射流预
The SR-72 is an affordable, affordable hypersonic aircraft under development at the Lockheed Martin skunk factory, combining intelligence, surveillance and reconnaissance. The cruising speed of SR-72 with double hair design will reach Mach number 6.0 and is expected to enter the development phase of the validator in 2018. According to the long-awaited USAF Air Force supersonic roadmap, the aircraft’s design will be used to replace the SR-71 to fill the growing capacity deficiencies of existing satellites and subsonic manned / unmanned platforms for SLR intelligence. From the published information, SR-72 will use parallel TBCC power. Skunk factory and Lochodain company to work together to develop the existing turbojet engine and scramjet integrated method to achieve the aircraft accelerates from 0 to Mach number 6.0 or more, but faced with how to solve the existing maximum turbojet engine Work Mach Number 2.5, Power Relay Problem with Speeds / Scramjet Engine Startup Mach Number 3.0-3.5. Designers call it the thrust divide near Mach 3.0. According to a large number of recent reports and studies on the next BCC in recent years, possible solutions to the thrust gap problem are as follows: Firstly,