US Air Force and DARPA developing a complete hypersonic vehicle by 2023 and China looking at morphing hypersonic vehicles
Article from the website nextbigfuture.com.
The Air Force and DARPA are researching and will build a next generation hypersonic vehicle by 2023. It will use some of the X-51 tech that is capable of operating "at the kind of temperatures you have when you are going at hypersonic speeds." They are developing a guidance system that can still function at Mach 5.
The Pentagon also hopes that costs could be lowered over a traditional turbine engine because of fewer parts in the hypersonic system.
Click on this link to read more http://nextbigfuture.com/2015/06/us-air-force-and-darpa-developing.html.