X-51A Hypersonic Vehicle Set for Flights at End of May

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X-51 Waverider

Scramjet with stamina ready for hypersonic test
NewScientist

In the last week of May, thousands of square miles of airspace above the Pacific Ocean will be cleared to make way for a skinny, shark-nosed aircraft called the X-51.

The 4-metre-long prototype will drop from beneath the wing of a bomber and attempt to become the first scramjet to punch through the atmosphere at hypersonic speeds for minutes, not seconds.


Like an airliner’s jet engines, supersonic combustion ramjets – or scramjets – work by compressing air enough to ignite fuel which drives air out of the back of the engine to provide thrust. It is designed to work at hypersonic speeds – above about 5 times the speed of sound.

A handful of experimental scramjets have flown successfully, reaching speeds as high as Mach 10, but not for long. “No one has successfully flown a vehicle of this nature for more than a few seconds,” says Joe Vogel, X-51 programme manager at Boeing. “Our goal is about 300 seconds of powered flight.”

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1 Response to “X-51A Hypersonic Vehicle Set for Flights at End of May”


  1. 1 Zelong

    Hello all, Thanks for the update on the X-51a as I’ve been checking three four times a 24h day and still nothing since all the head lines before Mar 19? The test was to be conducted from about March 18 onwards, now scheduled for May but still no real news released only this and the link provided nothing from DARPA or AEDC websites. So where did this news come from? hear say?
    So far until a confirmed launch I believe the X-51a test has failed already.

    Zelong.

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