Article from the website heraldsun.com.au.
SCIENTISTS from the US defence forces are working to build a new aircraft that can travel at speeds of more than 6100km/h (Mach 5) while carrying deadly missiles.
The aircraft — which are being worked on by the US Air Force and the Defense Advanced Projects Research Agency (DARPA) — are designed to move at hypersonic speeds, that is, faster than five times the speed of sound.
The new aircraft follows the X-51 Waverider, which successfully travelled at hypersonic speeds in May 2013.
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