巡航导弹一直是现代战争中远程精确打击的主力武器,而动力技术则是巡航导弹的核心关键技术之一,因此各国十分注重相关关键技术的发展。2015年5月中旬,美空军研究实验室发布公告表示,将在X-51“驭波者”高超声速飞行器的技术基础上,寻求“高速打击武器”(HSSW)项目所需的新技术。该项目的最终目的是开发由陆海空等平台发射的、可在30分钟内打击全球任何目标的高超声速武器。其中,在推进技术方面,美空军将重点开发可提高飞行 Cruise missiles have always been the main weapon of long-range precision strike in modern warfare. Power technology is one of the key technologies of cruise missiles. Therefore, all countries attach great importance to the development of related key technologies. In mid-May 2015, the U.S. Air Force Research Laboratory announced that it would seek the “HSSW” project on the basis of the technology of the X-51 “UAV” hypersonic vehicle new technology. The ultimate goal of the project is to develop hypersonic weapons that can be launched by land, sea and air platforms to strike any target in the world within 30 minutes. Among them, the United States Air Force will focus on the development of technology to enhance flight