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SpaceX to build reusable launch vehicle
Flightglobal ^ | September 29, 2011 | Zach Rosenberg

Posted on 10/02/2011 8:06:59 AM PDT by Dagnabitt

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To: Paradox
Just seems so much easier to stuff the damn things with parachutes, and then retrieve the things from the ocean. Refuel/reuse.

There is a practical limit to how much you can bring back with parachutes. Most boosters would not survive an off-axis landing. Powered landings are controlled, a parachute landing is not. Keep in mind that this thing weighs 5-10% of what it did going up -- it will lose foward velocity pretty quick and won't fall all that fast.

When you drag expensive aerospace hardware out of the sea you aren't reusing it, you are salvaging it.

21 posted on 10/02/2011 2:05:26 PM PDT by hopespringseternal
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To: hopespringseternal

Ok, stay with me. How about parachutes until just before touchdown, just seems like a waste to haul all that fuel up and a waste not to use the atmosphere for something. Since I know I don’t know it all, it must be that others have done the math, and the extra weight (and expense) of the parachute subsystem is greater than the extra weight (and expense) of the fuel necessary to slow it down all the way. It goes against my gut feeling, but if so many different companies are following that model, it must be the case.


22 posted on 10/02/2011 2:13:50 PM PDT by Paradox (Democrats on Obama, They can't deny him, He is them.)
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To: Jack Hydrazine

BTTT


23 posted on 10/02/2011 3:04:03 PM PDT by hattend (If I wanted you dead, you'd be dead. - Cameron Connor)
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