Viking '75 Mars Lander Construction, Looking for Viking lander design/construction information |
Viking '75 Mars Lander Construction, Looking for Viking lander design/construction information |
Jun 27 2017, 09:45 AM
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#46
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Senior Member Group: Members Posts: 2430 Joined: 30-January 13 From: Penang, Malaysia. Member No.: 6853 |
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Jun 28 2017, 05:31 AM
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#47
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Member Group: Members Posts: 184 Joined: 2-March 06 Member No.: 692 |
Thanks. Always wondered how that worked.
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Aug 4 2017, 04:14 PM
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#48
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Member Group: Members Posts: 101 Joined: 3-May 12 From: Massachusetts, USA Member No.: 6392 |
The Viking lander's Surface Sampler Acquisition Assembly (SSAA) is complete, for now at least. The SketchUp model file is available at the 3D Warehouse. The final set of components to be finished included the boom supports and guides:
Here is the overall lander (still missing most external components) with the SSAA and its Collector Head in place (the second view shows the collector head fully retracted): This view shows the surface sampler with its Collector Head Shroud Unit (CHSU) attached and configured for launch, cruise to Mars, and landing wherein the SSAA is pivoted down to engage the triangular restraint post. The CHSU sealed the ultra-clean and sterilized collector head: |
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Jan 14 2018, 12:37 AM
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#49
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Member Group: Members Posts: 101 Joined: 3-May 12 From: Massachusetts, USA Member No.: 6392 |
I've completed a detailed (nearly 18 minutes long) video animation that demonstrates operation of the Viking lander's Surface Sampler Acquisition Assembly. The video features the 3D digital model of the lander that I've been working on for the past few years (and which has a few more years to go until completion), described in earlier replies.
My thanks to the following organizations who have allowed me to research their Viking artifacts: The Viking Mars Missions Education and Preservation Project The Museum of Flight California Science Center Virginia Air and Space Center NASA Langley Research Center Smithsonian National Air and Space Museum |
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Jan 14 2018, 08:37 AM
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#50
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Senior Member Group: Members Posts: 1089 Joined: 19-February 05 From: Close to Meudon Observatory in France Member No.: 172 |
I've completed a detailed (nearly 18 minutes long) video animation that demonstrates operation of the Viking lander's Surface Sampler Acquisition Assembly. The video features the 3D digital model of the lander that I've been working on for the past few years (and which has a few more years to go until completion), described in earlier replies. My thanks to the following organizations who have allowed me to research their Viking artifacts: The Viking Mars Missions Education and Preservation Project The Museum of Flight California Science Center Virginia Air and Space Center NASA Langley Research Center Smithsonian National Air and Space Museum WOW ! Thanks so much Tom for this astounding video: lots of congratulations to you I feel being back at JPL and I'm remembering a lot of events ! |
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Jan 14 2018, 09:14 AM
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#51
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Member Group: Members Posts: 184 Joined: 2-March 06 Member No.: 692 |
Tom, that is fantastic! I am old enough to remember those missions, and have always wondered how those arms worked.
Thank you for being such a Viking fan and for your hard work. |
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Jan 14 2018, 03:24 PM
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#52
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Member Group: Members Posts: 915 Joined: 4-September 06 From: Boston Member No.: 1102 |
Tom, thank you for a fantastic movie. It is visually striking and extremely informative. The details of how the ten foot arm roles up are ingenious. I would think this movie would be particularly valuable for engineering courses to show how design translates into function---with details from two of the most iconic space craft ever. The description, narration and music all incredibly well done.
-------------------- |
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Jan 26 2018, 09:23 PM
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#53
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Member Group: Members Posts: 701 Joined: 3-December 04 From: Boulder, Colorado, USA Member No.: 117 |
Beautiful engineering, beautifully rendered and presented. Congratulations!
John |
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Jan 27 2018, 11:44 AM
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#54
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Junior Member Group: Members Posts: 94 Joined: 22-May 08 From: Loughborough Member No.: 4121 |
As a humble chemist (albeit one who vividly remembers reports of the mission at the time and the pictures splashed across newspaper front pages) I have to say I'm blown away by this. Brilliantly informative and impressive stuff!
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Jan 9 2019, 12:51 AM
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#55
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Member Group: Members Posts: 101 Joined: 3-May 12 From: Massachusetts, USA Member No.: 6392 |
The next chapter in the effort to create a high-fidelity Viking '75 Mars lander 3D digital model is complete - the S-Band High Gain Antenna (HGA) and its deployment mechanism (the preceding links lead to the SketchUp 3D Warehouse where the model files are freely available). Here are images comparing the model to actual antenna units:
Here are exploded and cut-away views of the antenna: And an overall view of the work-in-progress lander model with antenna in place (most of the lander's external components are yet to be modeled): All externally-visible piece-parts of the HGA and deployment mechanism (along with a selection of internal parts for which I've found some documentation) are modeled in detail - nearly 300 in all. A Google Photos album contains renderings of the model as progress has been made over the past few years (newer at the bottom). Sincere thanks to the Viking Mars Missions Education and Preservation Project, who allowed me many hours of access in 2015 and 2017 to HGA serial number 21 in their collection. I was able to capture hundreds of detail measurements with precision calipers along with hundreds of close-up photographs to guide the model during two trips from my home in Massachusetts USA to the VMMEPP in the Pacific Northwest. |
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Jan 9 2019, 01:31 AM
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#56
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Senior Member Group: Members Posts: 2430 Joined: 30-January 13 From: Penang, Malaysia. Member No.: 6853 |
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Jan 9 2019, 03:41 PM
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#57
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Junior Member Group: Members Posts: 43 Joined: 14-December 12 Member No.: 6784 |
Tom, what you're doing is not only historical preservation, but a work of art.
I wish you the best of luck in continuing the effort. |
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Oct 3 2019, 02:12 AM
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#58
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Member Group: Members Posts: 101 Joined: 3-May 12 From: Massachusetts, USA Member No.: 6392 |
I've completed the remaining two communications antennas of the Viking '75 Mars lander: the S-band Low Gain Antenna (LGA) and the UHF antenna. The LGA was small a receive-only antenna used to pick up commands sent from Earth. Here are rendering of the LGA (SketchUp 3D Warehouse link):
The UHF antenna was used to relay information from the lander through either of the two Viking orbiters and onward to Earth (which could be done either in real-time or deferred via the orbiter's tape recorder). Here are renderings of the UHF antenna (SketchUp 3D Warehouse Link): |
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Oct 3 2019, 09:56 PM
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#59
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Senior Member Group: Members Posts: 1648 Joined: 5-March 05 From: Boulder, CO Member No.: 184 |
Nice to see these antennas again. I especially recall the LGA from the downlinked images. Thanks Tom!
-------------------- Steve [ my home page and planetary maps page ]
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Apr 2 2020, 07:46 PM
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#60
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Senior Member Group: Members Posts: 2518 Joined: 13-September 05 Member No.: 497 |
Over on nasawatch it's being claimed that the NASA worm logo appeared on the Viking lander, but I couldn't find any evidence of this. Bicentennial logo, yes, Viking patch logo, yes, American flag, yes, but no obvious worm. Maybe there's a small one on the patch? I couldn't find any high-res images of the patch as it appeared on the lander. Anyone know?
-------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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