[ExI] scramjet

[samantha]

Mike Dougherty wrote:
> On Thu, May 27, 2010 at 10:42 PM, Damien Broderick <thespike at satx.rr.com> wrote:
>   
>> http://www.pcmag.com/article2/0,2817,2364269,00.asp
>> The craft flew at six times the speed of sound for three minutes and 20
>> seconds, according to the Associated Press. A B-52 Stratofortress released
>>     
>
>   
>> The previous record for a hypersonic scramjet burn was just 12 seconds,
>> according to the report.
>>     
>
> Aside from the geek factor, why is this good?  What applications
> require mach 6+ ?
>   

HASTOL <http://www.tethers.com/OrbitToOrbit.html> and other rotovator 
spacelaunch techniques.  But it needs around Mach 12 as I understand it 
except for skyhook variants where the receiving in comes nearly to rest 
at certain points in its orbit.
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