On Orbit > Real NASA Space Shuttle Missions

NASA's Next Rocket

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spaceboy7441:
The moment we have been waiting painstakingly for the past few years has finally arrived. The replacement to the Space Shuttle and the new NASA rocket has been decided.

SLS (Space Launch System)
SD-HLV (Shuttle Derived Heavy Lift Vehicle)



http://www.nasaspaceflight.com/2011/06/managers-sls-announcement-after-sd-hlv-victory/

Spaceguy5:
I think it's a shame that they're more or less just going to throw away all existing SSME's with this (as it's expendable).

Admin:
I think it's a shame they keep anything "solid rocket fuel".

/Admin

Spaceguy5:
Yeah, that too. I'm glad we've gone so long with few catastrophic accidents caused by solid rockets. I think it was crazy sending a man on them in the first place. At least Orion will have an escape system.

uri_ba:
Solid rockets are much less complex then liquid. they only have two parts that can fail are structure and fuel.

on liquid you got, structure, fuel, pumps, pipes, turbines, injectors and so on..

the liquids on the other hand can be throttled

I thought SSMEs are too expensive to throw way on every launch. but I guess prices will go down considerably when you make more the half an engine a year.

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