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[Wired] Pentagon’s Mach 20 Missile Lost Over Pacific — Again

post #1 of 92
Thread Starter 
Source: http://www.wired.com/dangerroom/2011...le-lost-again/

Quote:
For the second time in a row, the Pentagon has lost contact with an experimental hypersonic vehicle over the Pacific, just minutes after it was launched from space.
[...]
In a statement, Darpa tried to put a positive shine on the day’s events. The Minotaur IV rocket “successfully inserted the aircraft into the desired trajectory,” the agency noted. The HTV-2 “transitioned to Mach 20 aerodynamic flight,” and that “more than nine minutes of data was collected before an anomaly caused loss of signal.”
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Buena Vista
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post #2 of 92
This reminds me of a parent explaining to their kid that they were adopted by casually mentioning they were lucky enough to have 2 sets of parents.
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post #3 of 92
How fast is Mach 20?
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post #4 of 92
Quote:
Originally Posted by cl04k3d View Post
How fast is Mach 20?
20 times faster then the speed of sound i think it is? correct me if im wrong
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post #5 of 92
Quote:
Originally Posted by cl04k3d View Post
How fast is Mach 20?
Pretty damn fast.
post #6 of 92
Thread Starter 
Quote:
Originally Posted by IXcrispyXI View Post
20 times faster then the speed of sound i think it is? correct me if im wrong
Yep, that is correct. Or more precisely ~6800m/s. Speed of sound is about 343m/s in dry air of 20 degrees Celsius.
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post #7 of 92
How many MPH?
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It's TURBO TIME!
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post #8 of 92
Quote:
Originally Posted by cl04k3d View Post
How fast is Mach 20?
http://en.wikipedia.org/wiki/Mach_number
post #9 of 92
Quote:
Originally Posted by cl04k3d View Post
How many MPH?
15,211.1668 mph. Very fast. No wonder they lost it.
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post #10 of 92
Quote:
Originally Posted by cl04k3d View Post
How many MPH?
Around 13000mph. Fast enough to go from Sydney to London in under an hour A normal flight would take around 24 hours..
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