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If the shuttle gets an extension on life past the date when ISS is done, NASA should look into a hybrid-fuel kick stage for satellite-deployment missions.
Unlike the Centaur, which was deemed too dangerous for shuttle missions, hybrids reduce the amount of high-pressure liquid (or gas) carried on board the shutle, and they can't accidentally detonate like solid rockets do.
It would be silly to develop this rocket stage solely for the shuttle, seeing as how its das are numbered. But a new RLV will come along sooner or later, and that RLV will need it.
Who needs Michael Griffin when you can have Peter Griffin? Catch "Family Guy" Sunday nights on FOX.
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I think that its pretty safe to say that Shuttle won't be launching satellites anymore. Ever.
For an RLV LEO-to-GEO kick stage, whats wrong with conventional solid assist motors?
[i]"The power of accurate observation is often called cynicism by those that do not have it." - George Bernard Shaw[/i]
[i]The glass is at 50% of capacity[/i]
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