How does the space shuttle roll on launch?

radiogoober

macrumors 6502a
Original poster
Jun 7, 2011
972
1
Hi all,

Question: how does the space shuttle roll right cater it launches? If you watch the takeoff it rolls shortly after take off, I think resulting in the shuttle exiting tht atmosphere upside down. So how does it initiate that first roll? Is it a function if the wings (ailerons?) Also why does it enter upside down? :) My guess is that for visibility its better to see the earth and allow for communications than being bottom to earth, but why not flip once in orbit?
 

Mac'nCheese

Suspended
Feb 9, 2010
3,753
5,097
Hi all,

Question: how does the space shuttle roll right cater it launches? If you watch the takeoff it rolls shortly after take off, I think resulting in the shuttle exiting tht atmosphere upside down. So how does it initiate that first roll? Is it a function if the wings (ailerons?) Also why does it enter upside down? :) My guess is that for visibility its better to see the earth and allow for communications than being bottom to earth, but why not flip once in orbit?
http://en.wikipedia.org/wiki/Roll_program
 
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quagmire

macrumors 603
Apr 19, 2004
6,324
1,135
It's tough to tell by video.


Go to 6:20. There doesn't appear to be any movement of its flight controls on the wings. The SSME's( since they are gimbaled) probably cause the roll.

As to why it rolls, I am not 100% sure either. But, it does flip back over to jettison the ET and stays that way until it does the pitch maneuver to have the ISS crew examine the tiles.
 
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balamw

Moderator
Staff member
Aug 16, 2005
19,368
978
New England
Shouldn't this all be past tense, since we're never going to see it again. "How did the space shuttle roll on launch." :( :mad: ;)

B
 
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quagmire

macrumors 603
Apr 19, 2004
6,324
1,135
Shouldn't this all be past tense, since we're never going to see it again. "How did the space shuttle roll on launch." :( :mad: ;)

B
There is one more launch, but any rolling action will be done by the SCA enroute to LA. ;) :p
 
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