Superfast drone fitted with new 'rotating detonation rocket engine' approaches the speed of sound 

 The experimental fusion reactor sustained temperatures of 180 million degrees Fahrenheit for a record-breaking 48 seconds. 

https://cdn.mos.cms.futurecdn.net/dHr9WcPzsE3erRo3uXaUc5.jpg

https://www.space.com/hypersonic-drone-test-flight-rotating-detonation-rocket-engine