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Author
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Topic: Space Lab Forward Fitting Pin
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denali414
Member Posts: 593
From: Raleigh, NC
Registered: Aug 2017
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posted 10-12-2018 06:05 AM
   
Can someone tell me what this was used for? Got it on eBay (132808561350) last week and delivered yesterday. It is very heavy (10+ lbs) and nicely machined. Came in its own wooden box from Aeritalia. Thanks in advance!Identification numbers: AERITALIA
SPACE-LAB
N.D.R.: K-0916
DATA: 05-4-80Nomenclature: FWD Fitting Pin 182000 FL10279
Drwg/Ident. No: TAV-1-52153 K0916-101
Serial No.: 004
CI-Number: 5010 01 A
FEA/WES No.: SL 811/83
Manufacturer: AIT  
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denali414
Member Posts: 593
From: Raleigh, NC
Registered: Aug 2017
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posted 10-12-2018 07:08 AM
 
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oly
Member Posts: 905
From: Perth, Western Australia
Registered: Apr 2015
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posted 10-12-2018 07:11 AM
Is it possible that this is one of the locator pins used to mount the Spacelab in the cargo bay located at the left and right sides of this image? Also visible on this ISS truss section. |
Jim Behling
Member Posts: 1463
From: Cape Canaveral, FL
Registered: Mar 2010
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posted 10-12-2018 10:32 AM
It is a trunnion pin. It is used to secure the payload to the payload bay. |
denali414
Member Posts: 593
From: Raleigh, NC
Registered: Aug 2017
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posted 10-12-2018 11:11 AM
Thank you! Learned a new word (trunnion) and what was the purpose of the pin. |
denali414
Member Posts: 593
From: Raleigh, NC
Registered: Aug 2017
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posted 10-13-2018 10:04 AM
Is there any way to tell if this was a spare or used on the mission? |
oly
Member Posts: 905
From: Perth, Western Australia
Registered: Apr 2015
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posted 10-13-2018 09:30 PM
You seem to have some documentation associated with the part and also the wooden box made to protect the part, which would indicate it has not been installed. Once installed the paperwork would have been filed, the box discarded or reused. The chances of these items being reunited seem slim.There were a few different designs of trunnion pins used to hold cargo and equipment securely in the cargo bay of the orbiter during a mission. As you would imagine, these items were designed to secure some precious cargo through launch loads stresses. The modules and trusses carried to space by the shuttle to the ISS had such pins each side and also along the keel plate of the orbiter payload bay. The side trunnion pins also have scuff plates to protect the shuttle and cargo during manipulation as the cargo was withdrawn from the orbiter. Once installed, the pins became redundant and were a potential heat transfer point. Crews undertook EVA activities to install thermal blankets over the trunnion Pins in an effort to reduce thermal energy transfer. One such EVA during STS-88 resulted in the loss of a thermal blanket and became the source of an long winded NASA conspiracy theory. This article has some good information about these pins. The National Air and Space Museum has a example of the ISS module trunnion pin that is designed to have a scuff plate installed. |
denali414
Member Posts: 593
From: Raleigh, NC
Registered: Aug 2017
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posted 10-14-2018 06:32 AM
Oly, thank you for the information! Still learning and figured not flown, but wanted to learn about the how/why — much appreciated. |
BrianB
Member Posts: 118
From: Kamloops BC Canada
Registered: Oct 2001
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posted 10-14-2018 06:28 PM
I was bidding on this item as well. Another item the seller was offering (132808756023) was a large (15x3 inch) bolt. The part number started with VO74. Some online research seems to show that a VO70 part number is associated with the shuttle program. What about the VO74 prefix? Is there online info about how this numbering system works? |
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