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MCC Answers: STS-113

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11. Chris Johns, of Flushing, Mich., asks the question:

I know during Project Apollo there was a four-minute blackout period in communications during re-entry of the Command Module. Does the shuttle have the same issue?
ANSWER
12. Simon Bryant, of Aylesbury, England, asks the question:

When MECO has occurred, why does the shuttle orbit for a while before jettison of the main tank. I would have thought that the tank separation would occur at the same time as MECO?
ANSWER

13. Roger Yurkiw, of Beamsville, Ontario, asks the question:
The P1 Truss is going to be unberthed using the shuttle arm and then a handoff to the station arm this time around. Is this being done for a specific technical reason? The S1 Truss was deployed solely with the station arm, and seeing as this is its symmetrical twin, I don't understand the need to use both arms.
ANSWER
14. Bob Gray, of Tampa, Fla., asks the question:
As the ISS gains mass from added components, does it need to go into a higher orbit? And if so, how is it propelled there?
ANSWER
15. Andy Smith, of Gloucester, U.K., asks the question:
When either MCC or the crew talks to each other, one of them always say "Air to ground 1 or 2." Does it matter which one is used? Why do they tell each other which one they are using?
ANSWER
16. Amanda, of Sydney, Australia, asks the question:
What are the safe reentry angles when traveling back into the Earth's atmosphere, and why are they important?
ANSWER
17. Adam Krantz, of Seattle, Wash., asks the question:
Can you please explain the solar beta angle and how this affects the ISS? The status report on Nov. 20, 2002, describes a high solar beta angle from Dec. 21, 2002, for six days and describes using an orientation of YVV/"Barbecue" (y-axis in velocity vector, i.e., vertical body axis Y facing forward, in flight direction). Can you explain that orientation, and why it is necessary?
ANSWER
18. Craig Neth, of Hollis, N.H., asks the question:
My question is about the S1 and P1 Trusses, specifically the keel pins and drag links. Why aren't those returned on the shuttle? Is there a plan to ever return the truss elements on the shuttle?
ANSWER
19. Randy Kahler, of Northampton, Pa., asks the question:
One of the tasks on spacewalk No. 2 of STS-113 is the transfer of the CETA cart from the P1 Truss to the S1 Truss. Why are both CETA carts needed on the S1?
ANSWER

20. Phil Bucher, of Denver, Colo., asks the question:

Tonight while watching the station/shuttle pass directly overhead, we noted that we could clearly see a white "jet contrail" tracking ahead of the station across the sky to the east. Initially, I thought it was merely a coincidence that the station happened to be following the track of a recent commercial jet, as viewed from my location. But when I compared our viewing with a friend who lives about 15 miles to the south, he had observed the same "contrail," and since it appeared to be perfectly aligned with the vehicle from his viewpoint too, then we realized it was some artifact of the station itself. So, what did we actually see?
ANSWER
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Curator: Kim Dismukes | Responsible NASA Official: John Ira Petty | Updated: 12/10/2002
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