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  Elevation above LM on lunar surface traverses

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Author Topic:   Elevation above LM on lunar surface traverses
LM-12
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posted 02-25-2015 10:51 AM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
On the Apollo 17 traverses, what was the highest elevation above the lunar module that Gene Cernan and Harrison Schmitt reached?

On Apollo 14, Alan Shepard and Ed Mitchell climbed almost as high as the LRV went on Apollo 15.

  • Apollo 14: ~278 ft elevation above LM at Station C-Prime
  • Apollo 15: ~312 ft elevation above LM at Station 6A
  • Apollo 16: ~499 ft elevation above LM at Station 4
  • Apollo 17 - ?

moorouge
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posted 02-25-2015 03:25 PM     Click Here to See the Profile for moorouge   Click Here to Email moorouge     Edit/Delete Message   Reply w/Quote
Very slightly off topic but relevant.

The highest landing point on the Moon was by Apollo 16 at 7,830 metres. One should note that heights on the Moon are measured relative to a sphere of radius 1,738,000 metres.

Blackarrow
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posted 02-25-2015 05:51 PM     Click Here to See the Profile for Blackarrow     Edit/Delete Message   Reply w/Quote
...or for those who speak and think in English, approximately 5,691,950 feet.

minipci
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posted 02-26-2015 07:03 AM     Click Here to See the Profile for minipci     Edit/Delete Message   Reply w/Quote
I believe that 1,738,000 metres is 5,702,099.74 feet (to 2 decimal places)

moorouge
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posted 02-26-2015 08:08 AM     Click Here to See the Profile for moorouge   Click Here to Email moorouge     Edit/Delete Message   Reply w/Quote
Or to be even more precise 5,702,099 feet, 8 and 61/64 inches.

music_space
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posted 02-26-2015 08:59 AM     Click Here to See the Profile for music_space   Click Here to Email music_space     Edit/Delete Message   Reply w/Quote
Did the crews suffer from oxygen deprivation?

LM-12
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posted 02-26-2015 09:06 AM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
Could we get back on topic here?

Headshot
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posted 02-26-2015 10:00 AM     Click Here to See the Profile for Headshot   Click Here to Email Headshot     Edit/Delete Message   Reply w/Quote
Were any of the crews able to see and photograph their respective lunar modules from these high vantage points, or were they too far away?

minipci
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posted 02-26-2015 10:13 AM     Click Here to See the Profile for minipci     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by moorouge:
Or to be even more precise 5,702,099 feet, 8 and 61/64 inches.
According to my Excel, it should be 5,702,099 feet 8.850393701 inches, which I make closer to 5,702,099 feet 8 and 17/20 inches. I think 61/64 is a fraction too large.

LM-12
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posted 02-26-2015 10:22 AM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Headshot:
Were any of the crews able to see and photograph their respective lunar modules...
Dave Scott took this 500mm photo of the LM Falcon from Station 6 on EVA-2.
Charlie Duke took a 500mm photo of the LM Orion from Station 4 on EVA-2.

mmmoo
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posted 02-26-2015 11:04 AM     Click Here to See the Profile for mmmoo   Click Here to Email mmmoo     Edit/Delete Message   Reply w/Quote
Here is an Apollo 14 panorama showing the LM from the highest point reached on Cone Crater.

LM-12
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posted 02-26-2015 11:16 AM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
I am not sure if John Young and Charlie Duke could see the LM from North Ray Crater on EVA-3. House Rock can be seen in the Orion photo above, so it looks like they might have been able to.

BA002
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posted 02-26-2015 02:45 PM     Click Here to See the Profile for BA002   Click Here to Email BA002     Edit/Delete Message   Reply w/Quote
And don't forget the most beautiful panorama of the entire Apollo progam: Station 6 of Apollo 17 where you can barely make out the LM as a speck in the distance.
I am not sure if it was the highest point of Apollo 17, but it certainly is a high point!

LM-12
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posted 02-26-2015 03:10 PM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
Station 6 looks like it might be the highest elevation reached on Apollo 17. Here is a contour map for EVA-3. Perhaps someone could decipher the details.

nasamad
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posted 02-26-2015 04:21 PM     Click Here to See the Profile for nasamad   Click Here to Email nasamad     Edit/Delete Message   Reply w/Quote
Going by those contour lines, it looks like the Apollo 17 crew went about 60 metres elevation above the LM.

LM-12
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posted 02-26-2015 09:08 PM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
Looking at the contour map for EVA-2, it seems that Station 2 at Nansen Crater might be even higher in elevation than Station 6. Is that what you see?

minipci
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posted 02-27-2015 05:31 AM     Click Here to See the Profile for minipci     Edit/Delete Message   Reply w/Quote
Looks like EVA2 Station 2 is above 4,620, while EVA3 Station 6 is below or equal to 4,580.

LM-12
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posted 02-27-2015 07:23 AM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
The LM landing site is between 4510 and 4520 meters on the contour map. I would say that Station 2 at Nansen Crater is at around 4625 meters. So my figure for the highest elevation above the LM reached by Cernan and Schmitt would be around 110 meters (~360 feet) at Station 2 on EVA-2:
  • Apollo 17: ~360 ft elevation above LM at Station 2

LM-12
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posted 02-27-2015 07:38 PM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
Cernan and Schmitt could not see the LM from Station 2. From the transcripts:
CC: Can you guys see the LM or are you down too far to see the LM?

CDR-EVA: ... our walkback constraints. Oh, no. The LM is over about three rises in the Scarp before we can even see it.

mach3valkyrie
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posted 03-01-2015 12:28 AM     Click Here to See the Profile for mach3valkyrie   Click Here to Email mach3valkyrie     Edit/Delete Message   Reply w/Quote
What was the distance limit from the LM on the walkback constraints? They looked pretty far away at Tracy's Rock. (Station 6)

LM-12
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posted 03-01-2015 07:24 AM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
On the traverse maps, Station 2 looks about three times as far away from the LM as Station 6.

LM-12
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posted 03-02-2015 06:02 AM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
What was the elevation of the Apollo 14 landing site?

moorouge
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posted 03-02-2015 02:33 PM     Click Here to See the Profile for moorouge   Click Here to Email moorouge     Edit/Delete Message   Reply w/Quote
If you can read the contours on this it might provide the answer.

LM-12
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posted 03-02-2015 02:55 PM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
Looks like the elevation at the LM is around 6570 meters. Thanks for the map.

LM-12
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posted 03-04-2015 05:24 AM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
This traverse map shows an elevation of about 5800 meters at the Apollo 12 landing site. My highest-to-lowest landing site elevation list would look like this:
  • Apollo 16: ~7830 meters
  • Apollo 14: ~6570 meters
  • Apollo 12: ~5800 meters
  • Apollo 15: ~4690 meters
  • Apollo 17: ~4515 meters
  • Apollo 11: ~1500 meters
Those numbers are rough estimates based on contour maps.

LM-12
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posted 04-19-2015 10:38 AM     Click Here to See the Profile for LM-12     Edit/Delete Message   Reply w/Quote
The elevations reached on EVA-1 and EVA-2 are shown in this Lunar Reconnaissance Orbiter (LRO) photo of the Apollo 15 landing site.

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