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Unknown pipes

Discussion in 'All Hands Club & Canteen Discussion Area' started by Dnalor, Jul 22, 2016.

  1. Dnalor

    Dnalor Member

    Glad that Forum is back...

    At the crashsite of a Thunderbolt we found such pipes. Rather heavy, stainless steel outside.

    Any idea what these things have been used for ? Any SWAG ? No production nummer found on the surface.

    Thx for your answers in advance.


    Attached Files:

  2. RSwank

    RSwank Well-Known Member

  3. Airwar

    Airwar Well-Known Member

    They look like 0.50 browning M2 barrels.
  4. Lucky Partners

    Lucky Partners Well-Known Member

    Two interesting possibilities above. Pipes clearly are wrapped in something which supports Rolland's answer, but why the holes? The holes make it look like cooling holes in a gun barrel, but then why wrapped? Can you tell us the interior diameter of the tubes? If they are gun barrels, the diameter should indicate the caliber of bullets used.
    Airwar likes this.
  5. Alex Smart

    Alex Smart Active Member

    When I was shown this picture my thought was that it must be gun barrels, the holes along the barrel should count to eleven, and there should be four rows of them at 90 degrees.
    However if you look at pictures of the P47 it will be apparent that there is some kind of covering over the outer wing area of the barrels. Perhaps to protect them before use or for aerodynamic reasons ?
  6. Lucky Partners

    Lucky Partners Well-Known Member

    I also noticed that at the link that Rolland posted and do not have an answer. Closest thought I have is that they are some sort of protective cover used when on the ground to prevent contamination of the barrels. In the picture posted by Dnalor you can see where the tubes have rusted where the covering is pulled away. Indicates they must be plain steel underneath. Would like to learn the interior diameter of these tubes. I would think that tubes feeding a turbocharger would be several inches in diameter. Picture from Rolland's link attached.

  7. RSwank

    RSwank Well-Known Member

    Here is a link to a photo (you can click it to enlarge) to see the pipes.
    This photo shows the P-47 engine on the left and the various pipes running between in and the turbo-supercharger on the right.
    These pipes seem to be shorter and fatter than the ones we are trying to identify.
    Also appear to be connected by some sort of expansion joint.


    The photo of from this site which has a series of photos. All are "double" clickable so you can get a good view of the complexity of the P-47.


    So maybe gun barrels makes more sense for the identification.

    Note that in the photo of the P-47 guns, the barrels protrude at different lengths because the guns are staggered in the wing. They all have the same length of barrel.
    Last edited: Jul 22, 2016
  8. RSwank

    RSwank Well-Known Member

    I think what you have is called here a "Heater Cover" and inside of it is the normal perforated "cooling" jacket which goes over the barrel.
    What is probably missing in your case is the actual gun barrel.

    Here is a photo which shows all three top to bottom, "heater cover", jacket and barrel.


    This photo is from this site http://www.bmgparts.com/aircraft.html

    Search for "Heater Cover" on the page.

    Here are some others photos of the item. Note this says they were (also) used on early jet fighters. The site calls it a "Barrel Shroud Cover".

    Last edited: Jul 23, 2016
  9. Dnalor

    Dnalor Member

    thx for your exciting contributions! I´ll try to understand precisely your answers and links.
    Actually the items are 1 car hour apart from my home as private property.
    Nevertheless I´ll try to get the dameters asap, there will be no resistance by the hoders.
    We are going asap to look for general aluminum parts with a production number - as they are usually on USAAF plane parts.
    Maybe such a number could also help .

  10. Dnalor

    Dnalor Member

    Attached Files:

  11. RSwank

    RSwank Well-Known Member

    Last edited: Jul 27, 2016
  12. Lucky Partners

    Lucky Partners Well-Known Member

    3 cm internal diameter, almost an inch and a quarter. A 50 caliber bullet is half an inch plus the thickness of the metal gun barrel would total total somewhere between 3/4 of an inch and one inch. Plus clearance to slip this cooling jacket over the barrel .... SWAG, 3 cm seems reasonable to me for the internal diameter of the cooling jacket.
  13. Graham Yaxley

    Graham Yaxley New Member

    Airwar likes this.
  14. Airwar

    Airwar Well-Known Member

    Thanks Graham,great source, do you have these also of the P-51 Mustang ?

  15. Graham Yaxley

    Graham Yaxley New Member


    Yes, the Avialogs website has numerous P51 documents.

  16. Airwar

    Airwar Well-Known Member

    Graham I have a lot of Pilot Notes but didnt know about this website,so thank you.
    Iam also an RAF researcher because a few RAF aircraft crashed in my vicinity.

  17. Airwar

    Airwar Well-Known Member

    We still looking for family of F/Lt. John Burton Shillitoe of Streatham, formerly of Kirk Hammerton,York
    who was a fighterpilot of 127 Squadron RAF,crashed and KIA, November 6th 1944 near railwaystation
    Hulshorst,Holland. He is buried at the General Cemetery Nunspeet,Holland.
    In the woods we made a cross to remember him.



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