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How did they patch Bullet Holes back then?


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-WILD-AlbinoHA5E
Posted

Well, since it wouldn't make sense to send an Aircraft home for a single 7.62mm hole in any body panel/in the Fabric, how did they fix them?

Could they Weld Aluminium Back then? Was it Practical? If the used filler/putty, how secure was that stuff back then, and how proof against the Pressure Difference inside and outside the Aircraft?

 

00e32c0849a8fedbf920e82e9c94fa0e.jpg

Posted (edited)

Edited for politeness' sake

Edited by Gambit21
II/JG17_HerrMurf
Posted (edited)

There is a difference between a combat patch and a permanent patch. In the field (early 90's) we precut aluminum patches of various sized and pre-drilled them for rivets. A little pro-seal, rivet in place, hit it with zinc chromate from a spray can and done. If there was time the crew chief might hit it with some actual paint but that was rare. Long term repair is just replace the panel as long as the underlying structure is still sound. I never saw a flyable AC with that many holes in it IRL.

 

Most of the airframe in WWII aircraft is not pressurized, even in pressurized AC.

Edited by II/JG17_HerrMurf
  • Upvote 1
Posted

There is never any welding done on an aluminium airframe. It will weaken the tempered sheet. Steel tube construction would allow some welding. And there is no pressure difference as they are not pressurised structures. The crew used an oxygen breathing system.

  • Upvote 1
Posted

Why don't you just make something up like you usually do.

Omg I know it's wrong but I LOL'd so hard at that!

Posted

Most of the airframe in WWII aircraft is not pressurized, even in pressurized AC.

 

I don't believe even the C-47's hull was pressurized was it?

 

 

Certainly no pressurization on "riced up" biplanes.

:rolleyes:

Posted

Why don't you just make something up like you usually do.

I personally don't like to see such offensive posts.

-WILD-AlbinoHA5E
Posted

I don't believe even the C-47's hull was pressurized was it?

 

 

Certainly no pressurization on "riced up" biplanes.

:rolleyes:

From what I know About Bernoulli the Static Pressure (Inside the Aircraft) Is always higher than the Dynamic Pressure (Airflow around Fuselage), so the Air Inside the Aircraft would always push Outwards. This is the Reason Fabric Surfaces Baloon at high speeds, this is why Bugs get sucked outside your Car when you Open the Windows, this is why you have to Worry about getting the Putty/Filler get sucked from the Skin by Air inside Air Pushing it outwards.

Maybe I'm misunderstanding it though.

Posted (edited)

Omg I know it's wrong but I LOL'd so hard at that!

 

 

Yeah - I edited it though.

Don't want to pick on him...I think he gets the point.

I personally don't like to see such offensive posts.

 

...grow up. I was referencing things he'd said recently.

Edited by Gambit21
-WILD-AlbinoHA5E
Posted (edited)

 

Yeah - I edited it though.

Don't want to pick on him...I think he gets the point.

Well, I am quite ignorant on the Pacific and sometimes too lazy to do my research. So, Points to you. But I also love the Term: "Riced Up Biplane", mainly refering to the manic obsession with absolute Manouverability at the cost of Elasticity of the Airframe and general High Speed Performance.

 

More of a Ki-Guy, Ki-43, 44, 61, 84, 100 and I know nothing about the Ground Attackers.

Except the D3A which looks like a Stuka had an Interracial Child with a Spitfire

Edited by CuteKitten94
Posted (edited)

Well, I am quite ignorant on the Pacific and sometimes too lazy to do my research. So, Points to you. But I also love the Term: "Riced Up Biplane", mainly refering to the manic obsession with absolute Manouverability at the cost of Elasticity of the Airframe and general High Speed Performance.

 

More of a Ki-Guy, Ki-43, 44, 61, 84, 100 and I know nothing about the Ground Attackers.

Except the D3A which looks like a Stuka had an Interracial Child with a Spitfire

 

No worries...just know there's guys here who are studied up on this stuff.

The Zeke was the result of a very different design philosophy...and it worked! For a while anyway.

...and it was the fastest think in the skies over the Pacific in the early war days.

Edited by Gambit21
Posted

Yeah - I edited it though.

Don't want to pick on him...I think he gets the point.

No I just meant that is a great comeback for an argument. I have no idea what you were actually referencing. I'm storing that one away for arguments with the wife hahaha.

Posted (edited)

...it's all in the delivery. :)

If Kitty was some sort of jerk or full of himself  I would have left it, but he's a nice guy so the

last thing I want to do is be a bully or come off that way.

Edited by Gambit21
Posted (edited)

In most  aircraft maintenance manuals there is a section on patching and all the various methods/specs to use depending on size of hole and impact damage, even a large hole can be patched using a 'doubler' patch on each side, or even triple layer

 

Although many of the methods and tools shown here are more modern, the 'old' techniques are also explained

 

 https://www.faa.gov/regulations_policies/handbooks_manuals/aircraft/amt_airframe_handbook/media/ama_Ch04.pdf

 

 

scroll down to about 4-97

 

Cheers Dakpilot

Edited by Dakpilot
=WH=PangolinWranglin
Posted

I know this is unrelated, but that picture is great to show the scale of the the massive F6F. 

 

Back to the topic, from what I understand, I believe fabric replaced fabric and metal replaced metal. That is the extent of my repair knowledge. I know more about the aerodynamics than ground operations. 

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