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Author Topic: 2-2-V-1 wing panel comparisons  (Read 1855 times)

Kevin Weeks

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2-2-V-1 wing panel comparisons
« on: June 25, 2019, 02:46:12 PM »

I had a question regarding wing panel comparisons of nearby wrecks and the artifact. I did some searching of wrecks from Canton Island some time ago and the artifact. I came up with an article about B-24 wing panels that showed a claim that the artifact came from a section of that wing. it was debunked due to thickness and rivet sizing being too large. I was wondering if it was possible that this piece may have come from the wing of a C-47 that crashed on sydney island?? especially since that wing was torn off before the plane struck the ground and burned, never to be recovered.

https://tighar.org/Projects/Earhart/Archives/Research/Bulletins/07_Sydneycrash/07_Sydneycrash.html

this came to me on friday as I walked under the freshly stripped and polished wing of a DC-3 at the new england air museum with my son not 10 feet away from the Lockheed Electra they have.

I have tried searching for a C-47 wing repair manual such as was used to debunk the B-24 claim. it makes sense to me that the C-47 skin would be thinner and use smaller rivets that would closer match the construction of the wing panels in these planes. looking over at the construction of the Electra shows completely different construction/rivet patterns across the entire plane. I had trouble looking at it and seeing how they would deviate from their standard rivet patterns even for a small patch especially being able to compare the two so closely.


has this been investigated?? i would be surprised if it had not.
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Kevin Weeks

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Re: 2-2-V-1 wing panel comparisons
« Reply #1 on: June 25, 2019, 02:59:23 PM »

of course after posting this I did find a very hard to read structural repair manual for a dc-3/c-47.... it's looking like the wing panels are possible too thin in most areas, so we are going from one extreme to the other?? the inner front edge of the wing appears to be the only skin that is .045 thick...

http://www.avialogs.com/index.php/en/aircraft/usa/douglas/dc3c-47/structural-repair-manual-for-the-model-dc-3.html#download

it calls out ad6 rivets which are 3/16 brazier head. great read in general for skin repair and rivet patterns.

just looked at the 2-2-v-1 article again to refresh my memory... seems I was mistaken on the thickness. thickness is .032 and the rivets were 3/32 and 5/32... hmmmm
« Last Edit: June 25, 2019, 03:03:11 PM by Kevin Weeks »
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Ric Gillespie

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Re: 2-2-V-1 wing panel comparisons
« Reply #2 on: June 25, 2019, 03:15:11 PM »

On July 16, 2017 I inspected the portion the DC-3/C-47 wing section at the New England Air Museum alleged to resemble Artifact 2-2-V-1.  At that time the wing section was out behind the museum, stored outdoors with various other bits and pieces of aircraft.  There was no way to check the thickness of the skin but, although there were some general similarities in rivet pattern, the rivet type, rivet size, rivet pitch, and spacing between rivet lines did not match the artifact. Not even close. TIGHAR videographer Mark Smith recorded the investigation.

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Kevin Weeks

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Re: 2-2-V-1 wing panel comparisons
« Reply #3 on: June 25, 2019, 04:07:45 PM »

As I said I would be surprised if you hadnt checked this! I remember you making this trip as I had planned to attend but I had other commitments unfortunately.

The link I attached earlier does show some good information on rivet sizing and repairs for different t skin thickness. I wonder if the specific section could have been the repair from the clipped guy wire that required the plane to be repaired for so long. That would be the only reason for the irregular river placement on a aircraft skin.

Thoughts... not worth much without that velum print to slide over every aircraft that went through canton!
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