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#340
by
Jorge
on 02 Aug, 2009 19:00
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You'd have to reorientate to an attitude that would account for the difference in thrust level. Which would probably then be hideously unefficient. Most likely they'd kill the other engine and complete the entire burn in RCS, I guess?
Nope, as long as you have a single engine, you will continue to use it. It is more efficient than downmoding to RCS.
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#341
by
elmarko
on 03 Aug, 2009 09:12
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You'd have to reorientate to an attitude that would account for the difference in thrust level. Which would probably then be hideously unefficient. Most likely they'd kill the other engine and complete the entire burn in RCS, I guess?
Nope, as long as you have a single engine, you will continue to use it. It is more efficient than downmoding to RCS.
So if a single engine on one side is still firing, the RCS will fire to keep the attitude where it's needed?
PS: You're really killing my confidence with these corrections
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#342
by
Jorge
on 03 Aug, 2009 11:46
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You'd have to reorientate to an attitude that would account for the difference in thrust level. Which would probably then be hideously unefficient. Most likely they'd kill the other engine and complete the entire burn in RCS, I guess?
Nope, as long as you have a single engine, you will continue to use it. It is more efficient than downmoding to RCS.
So if a single engine on one side is still firing, the RCS will fire to keep the attitude where it's needed?
The remaining OMS engine will gimbal to point through the c.g. RCS control for roll attitude, OMS gimballing for pitch and yaw.
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#343
by
cgrunska
on 05 Aug, 2009 18:56
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Is there any plan for the centrifugal module going up to the ISS if the shuttle is extended? Wasn't it completed, just waiting for a ride? I seem to remember reading something like that, but now I can't remember.
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#344
by
Orbiter
on 05 Aug, 2009 19:01
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Was wondering, what was the lightest / Heaviest Shuttle Launch/Landing ever?
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#345
by
Jim
on 05 Aug, 2009 19:07
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Is there any plan for the centrifugal module going up to the ISS if the shuttle is extended? Wasn't it completed, just waiting for a ride? I seem to remember reading something like that, but now I can't remember.
search this site. You will find it is in a parking lot.
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#346
by
Jorge
on 05 Aug, 2009 19:07
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Is there any plan for the centrifugal module going up to the ISS if the shuttle is extended? Wasn't it completed, just waiting for a ride? I seem to remember reading something like that, but now I can't remember.
No. There are no plans to reinstate the CAM if shuttle is extended because there is nothing left to reinstate. The pressure hull was completed but not the rotor. The pressure hull has been sitting outdoors in a parking lot in Tsukuba for a couple of years. It is no longer flight worthy. All work was stopped on the rotor.
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#347
by
cgrunska
on 05 Aug, 2009 20:51
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So what are nasa's plans on figuring out microgravity effects on biological creatures prior to moon/mars/neo missions, if they threw away the "artificial gravity" maker?
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#348
by
rdale
on 05 Aug, 2009 20:56
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what are nasa's plans on figuring out microgravity effects on biological creatures prior to moon/mars/neo missions, if they threw away the "artificial gravity" maker?
That's not part of the space shuttle... You might try a research thread.
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#349
by
cgrunska
on 05 Aug, 2009 21:06
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true, i'll take that elsewhere. Thanks guys!
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#350
by
Hobbs
on 05 Aug, 2009 22:51
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just a quickie whilst its on my mind but where do the sound suppression system's water tanks get their water supply from? is it sea water thats treated at a plant in KSC?
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#351
by
Jim
on 06 Aug, 2009 00:35
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just a quickie whilst its on my mind but where do the sound suppression system's water tanks get their water supply from? is it sea water thats treated at a plant in KSC?
City of Cocoa water
There is no sea water treatment plant or water plant at KSC or CCAFS.
Seawater water would be corrosive
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#352
by
Stefan0875
on 06 Aug, 2009 20:14
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Hello
perhaps anyone can help me with a question about the SRB:
have a look at this photo:
What are these rings (red arrows) for and what kind of material is it?
Thanks fpr your help
Regards
Stefan
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#353
by
Jim
on 06 Aug, 2009 20:19
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This goes to the shuttle Q&A thread
That is foam protecting the strengthening rings on the lower segment. The strengthening ring prevent the casing from crushing when the aft skirt punches a hole in the water and the water collapses back.
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#354
by
brettreds2k
on 06 Aug, 2009 21:09
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Hereis a question I have often wondered since they started showing SRB camera footage of SRB Seperation.
I notice that the underside of the ET (Very bottom) always seems burnt black looking and even sometimes as if its glowing, Does the heat from the Shuttles Main Engines darken this area or is this marks left from the SRB's during liftoff or more from when they jettison away?
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#355
by
Jorge
on 06 Aug, 2009 21:12
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Hereis a question I have often wondered since they started showing SRB camera footage of SRB Seperation.
I notice that the underside of the ET (Very bottom) always seems burnt black looking and even sometimes as if its glowing, Does the heat from the Shuttles Main Engines darken this area or is this marks left from the SRB's during liftoff or more from when they jettison away?
The scorching is caused by plume recirculation from both the SRBs and the SSMEs.
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#356
by
ugordan
on 07 Aug, 2009 07:45
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This video shows that recirculation prominently starting at 1:55 into the clip:
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#357
by
LMSenus
on 07 Aug, 2009 13:58
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Please forgive me if this has been asked before, but what is the protocol for flying the shuttle flags? Are the flags flown only when the shuttle is on orbit, or once the stack is rolled out?
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#358
by
brettreds2k
on 07 Aug, 2009 14:38
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Hereis a question I have often wondered since they started showing SRB camera footage of SRB Seperation.
I notice that the underside of the ET (Very bottom) always seems burnt black looking and even sometimes as if its glowing, Does the heat from the Shuttles Main Engines darken this area or is this marks left from the SRB's during liftoff or more from when they jettison away?
The scorching is caused by plume recirculation from both the SRBs and the SSMEs.
Gotcha, so is the tank coated there with something to keep the heat from blowingt hrough the tank and or heating the fuel inside?
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#359
by
Jim
on 07 Aug, 2009 14:40
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Gotcha, so is the tank coated there with something to keep the heat from blowingt hrough the tank and or heating the fuel inside?
The orange foam.
