Orion Launch Today

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Discussion

CrutyRammers

13,735 posts

200 months

Thursday 4th December 2014
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Scrubbed frown

Eric Mc

Original Poster:

122,345 posts

267 months

Thursday 4th December 2014
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Scrub frown

Gandahar

9,600 posts

130 months

Thursday 4th December 2014
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This is nothing, when the first space shuttle went up I seem to recall it was delay after delay.


jmorgan

36,010 posts

286 months

Thursday 4th December 2014
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Nuts.

MrRee145

158 posts

165 months

Thursday 4th December 2014
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frown darn it

Bisonhead

1,568 posts

191 months

Thursday 4th December 2014
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No launch tooday frown

RobGT81

5,229 posts

188 months

Thursday 4th December 2014
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Must be quite a process to defuel it now then.

Eric Mc

Original Poster:

122,345 posts

267 months

Thursday 4th December 2014
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Gandahar said:
This is nothing, when the first space shuttle went up I seem to recall it was delay after delay.
The first Shuttle was delayed three years from its original date in 1978. However, the ACTUAL launch of Columbia on 12 April 1981 was carried out only two days after the initial planned launch on 10 April 1981 was cancelled due to problems with the on board computers. So there was technically only one scrubbed launch for STS-1

So, there wasn't scrub after scrub.

Of course, later Shuttle launches had far more scrubs than the very first one.

FunkyNige

8,932 posts

277 months

Thursday 4th December 2014
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Stupid question alert - why is there a launch window for this mission?
I can understand having one if you need to be at a certain point in space at a certain time in order to transfer/rendezvous, etc. but this mission is just going up, round and down again so what would they be too late for if they launch an hour after the window ends? Is it something so untechnical as needing to recover it in daylight?

Eric Mc

Original Poster:

122,345 posts

267 months

Thursday 4th December 2014
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FunkyNige said:
Stupid question alert - why is there a launch window for this mission?
I can understand having one if you need to be at a certain point in space at a certain time in order to transfer/rendezvous, etc. but this mission is just going up, round and down again so what would they be too late for if they launch an hour after the window ends? Is it something so untechnical as needing to recover it in daylight?
The question was asked a few posts ago and this was my reply -

"Lighting conditions - both at the Cape and at the planned splashdown point in the Pacific.

The mission is scheduled to last about 4 hours - by which time it will be beginning to get dark in the splashdown area. They want to have decent daylight to observe the Orion as it comes down on its parachutes and to facilitate the recovery operation.

Most missions have much tighter launch windows because the spacecraft is being sent to a particular target in space, such as the Space Station or the moon. The movement of the target will determine when the launch needs to happen".

MartG

20,773 posts

206 months

Thursday 4th December 2014
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On a lighter note....


Eric Mc

Original Poster:

122,345 posts

267 months

Thursday 4th December 2014
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I knew they'd find an alternative use for the new clock display board smile

MartG

20,773 posts

206 months

Thursday 4th December 2014
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Eric Mc

Original Poster:

122,345 posts

267 months

Thursday 4th December 2014
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No point in painting a rocket unless you really have to. Every pound of weight means a few more pounds of propellant - which means more weight - and more propellant etc.

jmorgan

36,010 posts

286 months

Thursday 4th December 2014
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Eric Mc said:
No point in painting a rocket unless you really have to. Every pound of weight means a few more pounds of propellant - which means more weight - and more propellant etc.
Think that bit is forgotten but it would be cool, go faster stripes, Nurburgring sticker, Kenwood stickers......

MartG

20,773 posts

206 months

Thursday 4th December 2014
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Eric Mc said:
No point in painting a rocket unless you really have to. Every pound of weight means a few more pounds of propellant - which means more weight - and more propellant etc.
Exactly - I don't expect the SLS to appear in the black/white scheme of the PR pics

Eric Mc

Original Poster:

122,345 posts

267 months

Thursday 4th December 2014
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Agreed. The central core of the SLS will be brown - just like the Shuttle ETs.

The only reason the Saturns wore those black panels was to aid photo tracking and check for roll and pitch manoeuvers.

The last Saturn IB launches in 1973-75 did away with some of the stripes -








MartG

20,773 posts

206 months

Thursday 4th December 2014
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Yes, and being aluminium skinned they needed the paint for corrosion protection - unlike the spray-on insulating foam.

The later 1Bs did away with the black tanks as they had issues with the tank skins wrinkling due to differential expansion between the black and white tanks under solar heating conditions

Simpo Two

85,883 posts

267 months

Thursday 4th December 2014
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Well I'm sorry but a NASA rocket needs black and white bits to look convincing. The Orion is just the wrong colour AND shape; it look like a damn European ESA pansy one. Mercedes need a three pointed star, the US needs black and white. Bah.

Eric Mc

Original Poster:

122,345 posts

267 months

Thursday 4th December 2014
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Orion is the spacecraft/capsule. Are you talking about the Delta IV booster?

After this flight, Orion won't be using a Delta again.