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Sun May 5, 2013, 04:40 PM

Experimental aircraft goes hypersonic

Source: Associated Press

Experimental aircraft goes hypersonic
Ap
Monday, May 06, 2013

AN experimental unmanned aircraft developed for the US Air Force has flown at more than five times the speed of sound in a test off California.

The Air Force said the X-51A WaveRider flew for more than three minutes under power from its exotic scramjet engine and hit a speed of Mach 5.1.

The test on Wednesday marked the fourth and final flight of an X-51A by the Air Force, which has spent $300 million studying scramjet technology that it hopes can be used to deliver strikes around the globe within minutes.

The previous three flights ended in failure or didn't reach the intended speed.

Though the aircraft was designed to reach Mach 6, or six times the speed of sound, program officials were satisfied with its performance in the latest test.


Read more: http://www.fijitimes.com/story.aspx?id=233159

19 replies, 2708 views

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Arrow 19 replies Author Time Post
Reply Experimental aircraft goes hypersonic (Original post)
Judi Lynn May 2013 OP
NYC_SKP May 2013 #1
formercia May 2013 #5
NYC_SKP May 2013 #6
formercia May 2013 #7
oldbanjo May 2013 #15
formercia May 2013 #16
caraher May 2013 #11
NYC_SKP May 2013 #12
Saving Hawaii May 2013 #2
DJ13 May 2013 #3
Bernardo de La Paz May 2013 #13
Spitfire of ATJ May 2013 #4
Bernardo de La Paz May 2013 #14
bemildred May 2013 #17
Ready4Change May 2013 #19
Liberalagogo May 2013 #8
reACTIONary May 2013 #9
Ready4Change May 2013 #18
daleo May 2013 #10

Response to Judi Lynn (Original post)

Sun May 5, 2013, 04:52 PM

1. That's quick!

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Response to NYC_SKP (Reply #1)

Sun May 5, 2013, 05:54 PM

5. Kinetic Energy Weapon

At that velocity, explosives are redundant.

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Response to formercia (Reply #5)

Sun May 5, 2013, 06:00 PM

6. Double the velocity and you quadruple the force of the impact.

Also quadruple the lift and quadruple the drag.

Mach 5 must really leave a mark.

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Response to NYC_SKP (Reply #6)

Sun May 5, 2013, 06:15 PM

7. I've fired Sabot rounds at near that velocity

and the damage they can cause is spectacular. Most metals vaporize at the temperatures generated.

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Response to formercia (Reply #7)

Mon May 6, 2013, 04:54 AM

15. That is 5 times the speed of a sabot round.

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Response to oldbanjo (Reply #15)

Mon May 6, 2013, 06:40 AM

16. check your math.

I stand by my comment.

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Response to NYC_SKP (Reply #6)

Sun May 5, 2013, 11:34 PM

11. Double the speed and you quadruple the *kinetic energy*

Force is something else entirely...

though I'm sure it leaves a big mark either way!

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Response to caraher (Reply #11)

Sun May 5, 2013, 11:44 PM

12. Drat!

I was worried, too, about the correct term!



.

.

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Response to Judi Lynn (Original post)

Sun May 5, 2013, 04:55 PM

2. Just wait 'til the HTV-2 stops breaking up in flight.

Mach 20.

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Response to Judi Lynn (Original post)

Sun May 5, 2013, 05:04 PM

3. ...... and it still wont catch a UFO

Oops, did I say that out loud?

Sorry.

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Response to DJ13 (Reply #3)

Mon May 6, 2013, 04:28 AM

13. The technology is not for catching UFOs, duh. Would make a great NY to Australia flight though. nt

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Response to Judi Lynn (Original post)

Sun May 5, 2013, 05:12 PM

4. This thing is a missile...



Ain't it weird that these programs manage to justify their budget on the last test?

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Response to Spitfire of ATJ (Reply #4)

Mon May 6, 2013, 04:30 AM

14. No it is not a missile. It's a test vehicle for a novel engine technology, first example of ScramJet

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Response to Bernardo de La Paz (Reply #14)

Mon May 6, 2013, 08:10 AM

17. Indeed, and a very big deal to get it to work like that.

No moving parts. But I hate to think of the fuel bill.

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Response to Bernardo de La Paz (Reply #14)

Mon May 6, 2013, 10:24 AM

19. 1st scramjet to produce useful thrust, I think?

There have been scramjets before, but only to test supersonic combustion. They were driven to speed, and kept at speed during the entire combustion period, by rockets. I think this was the first to produce positive thrust, taking itself to a higher speed than it's booster rockets delivered.

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Response to Judi Lynn (Original post)

Sun May 5, 2013, 06:24 PM

8. Meh.




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Response to Liberalagogo (Reply #8)

Sun May 5, 2013, 07:27 PM

9. Light. Sound. What's the diff? (nt)

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Response to Liberalagogo (Reply #8)

Mon May 6, 2013, 10:08 AM

18. Thanks!

I hadn't seen these.

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Response to Judi Lynn (Original post)

Sun May 5, 2013, 11:12 PM

10. Hurrah

More ways to kill people faster and from farther away. That never goes wrong.

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