Saturn V anecdote

Author
Discussion

generationx

6,742 posts

105 months

Thursday 25th July 2019
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I don't know if this has been mentioned? How the F1 engines were ignited:

https://www.youtube.com/watch?v=2cldgl9IIyY

I didn't realise they fired in a sequence. Fascinating.

Eric Mc

122,029 posts

265 months

Thursday 25th July 2019
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Scott Manley's channel is great for such stuff.

Beati Dogu

8,891 posts

139 months

Wednesday 7th August 2019
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Check out this video about the Saturn V's Launch Vehicle Digital Computer (LVDC).

Made by IBM, this was the rocket's flight computer, which controlled it until it reached the moon.

https://www.youtube.com/watch?v=p12CinjFh1I

Eric Mc

122,029 posts

265 months

Thursday 8th August 2019
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I don't think it controlled the Apollo spacecraft all the way to the moon. It was to control the trajectory of the Saturn V during launch, initial orbit and Trans Lunar Insertion. It was discarded together with the SIVB stage of the Saturn V once the Command/Service Module and Lunar Module disconnected from the stack and headed off to the moon. Guidance to and from the moon was controlled by a computer in the Command Module. A similar computer was in the Lunar Module and this could be used for trans-lunar navigation too - as was the case during Apollo 13 when the power to the Command Module had to be almost completely shut down due to the disabling of the Service Module.

MartG

Original Poster:

20,677 posts

204 months

Thursday 8th August 2019
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Eric Mc said:
I don't think it controlled the Apollo spacecraft all the way to the moon. It was to control the trajectory of the Saturn V during launch, initial orbit and Trans Lunar Insertion. It was discarded together with the SIVB stage of the Saturn V once the Command/Service Module and Lunar Module disconnected from the stack and headed off to the moon. Guidance to and from the moon was controlled by a computer in the Command Module. A similar computer was in the Lunar Module and this could be used for trans-lunar navigation too - as was the case during Apollo 13 when the power to the Command Module had to be almost completely shut down due to the disabling of the Service Module.
It controlled the S-IVB to impact on the Moon, so it is technically correct to say it controlled it all the way to the Moon

Eric Mc

122,029 posts

265 months

Thursday 8th August 2019
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Those that were deliberately targetted at the moon (not all were).

The point I was making was that the Apollo spacecraft had its own guidance system and this was what guided IT to the moon.

MartG

Original Poster:

20,677 posts

204 months

Thursday 8th August 2019
quotequote all
Eric Mc said:
Those that were deliberately targetted at the moon (not all were).

The point I was making was that the Apollo spacecraft had its own guidance system and this was what guided IT to the moon.
The original post didn't mention Apollo, just 'the rocket' wink

Eric Mc

122,029 posts

265 months

Thursday 8th August 2019
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Indeed it did.

MartG

Original Poster:

20,677 posts

204 months

Friday 11th October 2019
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Slide set from a lecture showing lunar surface photos which have been colour corrected to show what the Apollo astronauts actually saw ( instead of the rather washed-out scan s previously available ) - showing just how orange Jack Schmidt's 'orange soil' actually was

https://gsa.confex.com/gsa/2018AM/webprogram/Hando...

RichGault

131 posts

121 months

Friday 11th October 2019
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Finished this book a couple of weeks ago. It's fantastic. Well worth the time to read.

Eric Mc

122,029 posts

265 months

Friday 11th October 2019
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MartG said:
Slide set from a lecture showing lunar surface photos which have been colour corrected to show what the Apollo astronauts actually saw ( instead of the rather washed-out scan s previously available ) - showing just how orange Jack Schmidt's 'orange soil' actually was

https://gsa.confex.com/gsa/2018AM/webprogram/Hando...
Amazing if accurate.

If you look at the TV images of the site, you can see the orangey colour. But it doesn't show up that sharply on TV.

MartG

Original Poster:

20,677 posts

204 months

Friday 11th October 2019
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Eric Mc said:
MartG said:
Slide set from a lecture showing lunar surface photos which have been colour corrected to show what the Apollo astronauts actually saw ( instead of the rather washed-out scan s previously available ) - showing just how orange Jack Schmidt's 'orange soil' actually was

https://gsa.confex.com/gsa/2018AM/webprogram/Hando...
Amazing if accurate.

If you look at the TV images of the site, you can see the orangey colour. But it doesn't show up that sharply on TV.
Note that Jack Schmidt verified that it was how he saw it

Silver Smudger

3,299 posts

167 months

Saturday 12th October 2019
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MartG said:
Eric Mc said:
MartG said:
Slide set from a lecture showing lunar surface photos which have been colour corrected to show what the Apollo astronauts actually saw ( instead of the rather washed-out scan s previously available ) - showing just how orange Jack Schmidt's 'orange soil' actually was

https://gsa.confex.com/gsa/2018AM/webprogram/Hando...
Amazing if accurate.

If you look at the TV images of the site, you can see the orangey colour. But it doesn't show up that sharply on TV.
Note that Jack Schmidt verified that it was how he saw it
I'm wondering why, when several of the pictures have colour samples on tripods in shot, did it take until 2018 for someone (outside NASA) to correct the pictures?

Eric Mc

122,029 posts

265 months

Saturday 12th October 2019
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That is rather strange. The colour guides (gnomons) were brought back to earth so there was a clear colour indicator present in the laboratories. Also, samples of the orange soil were brought back too so there would have been actual samples of the material (kept in airtight boxes) to examine.

Having said all that, a lot of the Apollo material has still not been properly examined - and modern examination techniques are a lot better than what was available in the early 1970s - so new revelations from these old samples are still possible.

I too would like to know why it took so long for the true colours to be revealed.

The discovery moment was captured on TV although the orange colour isn't that obvious in the TV images. Note that Schmitt says that the orange colour is similar to the colour of the "LMP Decal" on his camera. That should give a very accurate first hand comparison as to how the orange looked to them at the time.

https://www.youtube.com/watch?v=kQ-7212_idA

MartG

Original Poster:

20,677 posts

204 months

Saturday 12th October 2019
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The Sun should leave the science reporting to other news sites...


Zirconia

36,010 posts

284 months

Saturday 12th October 2019
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MartG said:
The Sun should leave the science reporting to other news sites...

The Sun should leave.


Interesting comment heard at a royal event. Sun reporter telling the chief plod that he had to leave now (traffic movement block in place). Police head honcho says non. Reporter starts to tell the Chief of police that is from the Sun and needs to leave now. Head police fella says "don't care if you are from the Moon, you are not leaving"

Eric Mc

122,029 posts

265 months

Saturday 12th October 2019
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If the Saturn V still existed, there would have been no need for the ISS. We could have had mega Skylab type space stations made up of docked SIVB stages.

Where are they getting their top speed data from? The Saturn V was capable of propelling 30 tons away from the earth at 25,000 mph.

Gojira

899 posts

123 months

Saturday 12th October 2019
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Eric Mc said:
If the Saturn V still existed, there would have been no need for the ISS. We could have had mega Skylab type space stations made up of docked SIVB stages.

Where are they getting their top speed data from? The Saturn V was capable of propelling 30 tons away from the earth at 25,000 mph.
To be fair, The Sun is another one of those "newspapers" that if they had a front page headline "Sun to rise in East tomorrow!" I'd be tempted to get up early and check...banghead

Edited by Gojira on Saturday 12th October 14:51

Halmyre

11,194 posts

139 months

Saturday 12th October 2019
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MartG said:
The Sun should leave the science reporting to other news sites...

What Saturn V ever looked like that?

67Dino

3,583 posts

105 months

Saturday 12th October 2019
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Gojira said:
Eric Mc said:
If the Saturn V still existed, there would have been no need for the ISS. We could have had mega Skylab type space stations made up of docked SIVB stages.

Where are they getting their top speed data from? The Saturn V was capable of propelling 30 tons away from the earth at 25,000 mph.
To be fair, The Sun is another one of those "newspapers" that if they had a front page headline "Sun to rise in East tomorrow!" I'd be tempted to get up early and check...banghead

Edited by Gojira on Saturday 12th October 14:51
We should probably just be grateful that they accept the moon landings took place at all.