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Author Topic: Patch Analysis and Electra Integrity  (Read 4761 times)

Steve Lyle Gunderson

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Re: Patch Analysis and Electra Integrity
« Reply #15 on: May 05, 2019, 08:05:32 AM »

2.   If there was no damage to the door, how water tight would the fuselage have been during high tide.  Would the tail end have filled with water to the level of the tide and then had to drain (slowly?) as the tide
The fuselage would not be fully water tight but it should be pretty good.  I think the tailwheel area in particular would be open to the water. I agree that if the whole empennage filled with water it would put a tremendous strain on the fuselage in the patch area.  I would think that an engineering study would be pretty complicated.  You’d have to calculate the volume of the empennage and the weight of the water versus the strength of the (weakened) structure.



Question, If the water level inside the tail section is the same as the water level of the sea outside the tail section, would there be any discernable increase in weight or stress caused by the flooding? If the tail section retained water as the tide recedes then I would think there would be an increase in weight load, but if the water drains out at the same rate as the tide recedes the water levels should remain equal. No?
Steve G
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« Last Edit: May 05, 2019, 08:07:10 AM by Steve Lyle Gunderson »
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Ric Gillespie

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Re: Patch Analysis and Electra Integrity
« Reply #16 on: May 05, 2019, 08:08:37 AM »

Question, If the water level inside the tail section is the same as the water level of the sea outside the tail section, would there be any discernable increase in weight or stress caused by the flooding? If the tail section retained water as the tide recedes then I would think there would be an increase in weight load, but if the water drains out at the same rate as the tide recedes the water levels should remain equal. No?

Good point.  I agree.
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Bill Mangus

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Re: Patch Analysis and Electra Integrity
« Reply #17 on: May 05, 2019, 08:31:39 AM »

I think it would depend on how large or small the holes were that were letting the seawater in and out. 

If holes were large, I'd agree with this.  If small, maybe not so much.
Bill Mangus
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Ric Gillespie

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Re: Patch Analysis and Electra Integrity
« Reply #18 on: June 07, 2019, 09:50:36 AM »

This is a test.
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Randy Conrad

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Re: Patch Analysis and Electra Integrity
« Reply #19 on: June 07, 2019, 10:02:02 AM »

This is a second test!
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Ric Gillespie

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Re: Patch Analysis and Electra Integrity
« Reply #20 on: June 07, 2019, 10:02:50 AM »

This is a second test!

Okay, that worked.
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Randy Conrad

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Re: Patch Analysis and Electra Integrity
« Reply #21 on: June 07, 2019, 10:11:46 AM »

Has something to do with jpegs I'm assuming. It lets me text...but it won't send pictures
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Friend Weller

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Re: Patch Analysis and Electra Integrity
« Reply #22 on: June 07, 2019, 10:24:20 AM »

I'm "riveted" to what all this testing is about....   ;D
Friend
TIGHAR 3086V
 
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Ric Gillespie

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Re: Patch Analysis and Electra Integrity
« Reply #23 on: June 07, 2019, 10:24:42 AM »

As a test, here's a jpeg that gives us a rare view (over AE's left shoulder) of part of the inside of the nav window that was later replaced with the patch.
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Ric Gillespie

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Re: Patch Analysis and Electra Integrity
« Reply #24 on: June 07, 2019, 10:26:04 AM »

I'm "riveted" to what all this testing is about....   ;D

Randy is having trouble posting photos.
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Martin X. Moleski, SJ

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Re: Patch Analysis and Electra Integrity
« Reply #25 on: June 07, 2019, 10:43:49 AM »

LTM,

           Marty
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Randy Conrad

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Re: Patch Analysis and Electra Integrity
« Reply #26 on: June 07, 2019, 10:51:49 AM »

Thanks Martin....but I've done this many times before....lol
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Joy Diane Forster

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Re: Patch Analysis and Electra Integrity
« Reply #27 on: June 25, 2019, 05:51:43 AM »

The forum has been very quiet.......

I understand the Jeff Glickman donates his time and thus has to do TIGHAR analysis in between paying jobs, but isn't there a little update/tidbit you could give us while we're waiting?  I know he had said the images looked promising.........
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Ric Gillespie

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Re: Patch Analysis and Electra Integrity
« Reply #28 on: June 25, 2019, 08:15:03 AM »

Jeff hit a bit of a snag which has now been resolved. The cutting edge super-resolution software Jeff wants to use is not commercially available.  He was able to do a rough proof-of-concept test using a "watermarked" demonstration copy.  The results were excellent.   He got in touch with the developer and was able to arrange for TIGHAR to get a free license to a full copy the software.  Jeff is now setting up all the parameters necessary to run the full program on the digitized images from the 16mm film.
Also, in mid-July, TIGHAR videographer Mark Smith and I are scheduled to meet with metallurgists at a lab in Massachusetts who are experts in the mechanical failure of metals. They will examine Artifact 2-2-V-1 to determine how each of the four edges of failed - what forces were required to cause the damage and what events or tools may have been used.
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Joy Diane Forster

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Re: Patch Analysis and Electra Integrity
« Reply #29 on: June 25, 2019, 11:06:37 AM »

Thanks for the update, Ric.  I'm very glad to hear that the software developer was so helpful.  I will also be very interested to hear what the Massachusetts lab has to say.
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