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Apollo Discussions => The Reality of Apollo => Topic started by: scooter on March 30, 2012, 01:39:31 PM

Title: SIVB question
Post by: scooter on March 30, 2012, 01:39:31 PM
The SIVB didn't carry any national markings. Is there a specific reason for that? I saw that on the Saturn 1B they did, as did the original Saturn V (the non-flying model).
Just curious...I'm thinking that being on a flight wherein they'd not be coming back to Earth, there was no "legal" requirement to put national markings on them.
Title: Re: SIVB question
Post by: Abaddon on April 05, 2012, 11:51:38 AM
Not sure, but I found this:
http://www.apollosaturn.com/markings/500fpainta.jpg (http://www.apollosaturn.com/markings/500fpainta.jpg)
for SA 500F
from here:
http://www.apollosaturn.com/markings/mguide.htm (http://www.apollosaturn.com/markings/mguide.htm)

ETA: That is the only instance I could find, maybe because it was not launched, they put the USA on it?
Title: Re: SIVB question
Post by: BazBear on April 30, 2012, 01:48:44 AM
Regarding Saturn IBs, Skylab-4 seems to be lacking them http://www.hq.nasa.gov/office/pao/History/alsj/skylab/skylab-KSC-73PC-672.jpg http://www.astronautix.com/flights/skylab4.htm . Oddly, if you look at photos of the SL-2 stack, you can see them in some shots, but they are missing in others http://www.hq.nasa.gov/office/pao/History/alsj/skylab/SL2-launch-noID.jpg http://www.hq.nasa.gov/office/pao/History/alsj/skylab/skylab-KSC-73PC-349.jpg http://upload.wikimedia.org/wikipedia/commons/0/0b/Saturn_IB_launches.jpg .
Title: Re: SIVB question
Post by: Jason Thompson on April 30, 2012, 03:20:31 AM
Ice on the outside of the tank would explain that. The shot looking down from above is from before fuelling (so before any ice would have formed), while the launch picture appears to clearly show a large patch of ice covering the side of the S-IVB.
Title: Re: SIVB question
Post by: BazBear on April 30, 2012, 10:19:32 PM
Ice on the outside of the tank would explain that. The shot looking down from above is from before fuelling (so before any ice would have formed), while the launch picture appears to clearly show a large patch of ice covering the side of the S-IVB.
Ahhh, yes I do believe you're right! Good eye, Jason :)
Title: Re: SIVB question
Post by: ka9q on May 04, 2012, 10:43:10 PM
Shouldn't this thread be in the Reality of Apollo section? I don't always check this one because I'm mainly interested in the Apollo stuff.
Title: Re: SIVB question
Post by: Abaddon on May 05, 2012, 06:05:37 PM
Regarding Saturn IBs, Skylab-4 seems to be lacking them http://www.hq.nasa.gov/office/pao/History/alsj/skylab/skylab-KSC-73PC-672.jpg http://www.astronautix.com/flights/skylab4.htm . Oddly, if you look at photos of the SL-2 stack, you can see them in some shots, but they are missing in others http://www.hq.nasa.gov/office/pao/History/alsj/skylab/SL2-launch-noID.jpg http://www.hq.nasa.gov/office/pao/History/alsj/skylab/skylab-KSC-73PC-349.jpg http://upload.wikimedia.org/wikipedia/commons/0/0b/Saturn_IB_launches.jpg .
I just can't see it as being a terribly important point. Maybe some had the decals and some did not, for no particular reason.

Maybe some did not because of time constraints for launch meant that there was no time to apply them, or any amount of reasons, such as JT's ice coverage, which, it should be noted occurs when the vehlcle is fully fueled.

Bottom line, I am challenged to find any conspiracy in it. It all looks normal to me.
Title: Re: SIVB question
Post by: Jason Thompson on May 06, 2012, 12:46:24 PM
Er, who said anything about conspiracy? This is the 'general discussion' board, and it was just a query about markings on a rocket stage.
Title: Re: SIVB question
Post by: BazBear on May 06, 2012, 06:01:01 PM
Regarding Saturn IBs, Skylab-4 seems to be lacking them http://www.hq.nasa.gov/office/pao/History/alsj/skylab/skylab-KSC-73PC-672.jpg http://www.astronautix.com/flights/skylab4.htm . Oddly, if you look at photos of the SL-2 stack, you can see them in some shots, but they are missing in others http://www.hq.nasa.gov/office/pao/History/alsj/skylab/SL2-launch-noID.jpg http://www.hq.nasa.gov/office/pao/History/alsj/skylab/skylab-KSC-73PC-349.jpg http://upload.wikimedia.org/wikipedia/commons/0/0b/Saturn_IB_launches.jpg .
I just can't see it as being a terribly important point. Maybe some had the decals and some did not, for no particular reason.

Maybe some did not because of time constraints for launch meant that there was no time to apply them, or any amount of reasons, such as JT's ice coverage, which, it should be noted occurs when the vehlcle is fully fueled.

Bottom line, I am challenged to find any conspiracy in it. It all looks normal to me.
Who's looking for a conspiracy? We're just discussing an interesting detail about SIVb markings.
Title: Re: SIVB question
Post by: BazBear on May 06, 2012, 06:03:35 PM
Shouldn't this thread be in the Reality of Apollo section? I don't always check this one because I'm mainly interested in the Apollo stuff.
I thought so too. I had trouble finding it the second time I wanted to post to it, as I had forgotten it was in GD.
Title: Re: SIVB question
Post by: VincentMcConnell on June 13, 2012, 10:42:07 PM
The SIVB didn't carry any national markings. Is there a specific reason for that? I saw that on the Saturn 1B they did, as did the original Saturn V (the non-flying model).
Just curious...I'm thinking that being on a flight wherein they'd not be coming back to Earth, there was no "legal" requirement to put national markings on them.

Probably because they had flags on the S-IC, and that was the biggest and baddest of all the stages. Not sure.
Title: Re: SIVB question
Post by: ka9q on August 05, 2012, 04:37:22 AM
Probably because they had flags on the S-IC, and that was the biggest and baddest of all the stages. Not sure.
This actually makes technical sense. Since the S-IVB goes into the same trajectory as its payload, every kilogram of mass you can remove from the S-IVB means a full extra kilogram of payload it can carry. An extra kilogram of payload would have required removing 5 kg from the S-II or a whopping 14 kg from the S-IC.

Considering how hard Grumman had to work to shave ounces of weight from the LM, even the weight of the paint in a logo must be considered.

Those who were around for the first two Shuttle flights may remember white external tanks. Starting with STS-3 they went orange - the native color of their polyurethane insulation - when the white paint was omitted to save quite a bit of weight. Because the tanks went almost to orbit, the reduction in tank weight turned into a nearly equal increase in payload capacity. Similarly, moving the painted logos from the S-IVB to the S-IC on the Saturn V would increase payload capacity and/or allow much bigger logos. And why not, since they can only be seen on the pad and in early flight when all three stages are still together?

Unmanned launchers often feature multiple logos on their payload fairings, but because they do not go all the way into orbit (usually being jettisoned shortly after stage 1/2 staging) the effect of the extra weight is more like that of a logo painted on the first stage.
Title: Re: SIVB question
Post by: Glom on August 06, 2012, 11:26:35 AM
I thought the white ET's was actually a condom they put on it for extra insulation.  It was actually just paint?
Title: Re: SIVB question
Post by: Echnaton on August 06, 2012, 05:51:24 PM
What is life without the fun of made up drama?
Title: Re: SIVB question
Post by: ka9q on August 06, 2012, 08:07:49 PM
Isn't there plenty of real drama in life?
Title: Re: SIVB question
Post by: Echnaton on August 06, 2012, 09:41:55 PM
I have kids in high school, they tell me that for some of their peers there is never enough drama.