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Creaking Door

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Viewing 15 posts - 11,431 through 11,445 (of 12,419 total)
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  • in reply to: Identifying This Wreck #1187352
    Creaking Door
    Participant

    The steel spars are very similar to the Bristol Bulldog wings…

    Think you could be correct about it being a Bristol wing.

    Scanned this from Aeronautical Engineering Volume II – Structures, J.D.Haddon, Pitman & Sons 1933 (not sure where I stand regarding copyright).

    in reply to: Identifying This Wreck #1188215
    Creaking Door
    Participant

    Just a guess really but are those steel ‘spars’ a dumbbell shape…..does that make it a Hawker design?

    in reply to: The Other Visitor To Coningsby Today #1188311
    Creaking Door
    Participant

    Is it a Vulcan? :confused:

    in reply to: Moscow Military Parade #1188501
    Creaking Door
    Participant

    I’m not sure you can really blame Hungarians for being anti-Soviet! :diablo:

    in reply to: Spitfire RM689 Crash On Internet #1191013
    Creaking Door
    Participant

    Has anybody noticed the advertising currently at the head of this Historic Aviation forum?

    in reply to: Günther "Franzl" Lützow #1194460
    Creaking Door
    Participant

    Just an idea but your friend could list it on an internet auction site and see what people were prepared to pay…

    …just be sure that he places the ‘winning’ bid before the end. 😉

    It will cost him something in fees but his insurer could hardly dispute its worth if it effectively ‘sold’ for that price.

    in reply to: Is This An Airfield Building? #1194787
    Creaking Door
    Participant

    Yes, I noticed the joggle too but I took that to mean that it was heavy plate (1/4 – 1/2 inch) but this throws up another problem in that the only picture I could find of a Type-C hangar door clearly shows that the plates were not joggled.

    However the rapid expansion of the RAF meant building hundreds of Type-C hangars so there must have been many construction firms involved so I would expect a fair bit of variation in the door detail.

    The hangar doors must have been made on site surely, could something that big have been moved by road in the 1930s?

    Incidentally the last Type-C hangar at Debden (Carver Barracks) was demolished in 2003.

    in reply to: Is This An Airfield Building? #1194915
    Creaking Door
    Participant

    Interesting (no really :o) report about the 200 (!) remaining Type-C hangars on MOD property (and their locations).

    http://www.defence-estates.mod.uk/publications/dmg/dmg_24.pdf

    If the structure in the photo is such a door this is what you would have to cut doors / windows through!

    There are six sliding and overlapping steel doors at each end of a typical Type-C Hangar. The doors run on cast iron wheels in tracks set into a reinforced concrete footing

    Each door measures approximately 10.7m high by 8 metres wide and weighs in the order of 12.5 Tonnes. They comprise a series of 10” x 3” channels and 10” x 4 1/2” RSJ’s (grammar! :rolleyes:), which are externally sheeted in steel plate of varying thickness as follows: 1/4” plate up to 6m high and 1/8″ plate above. Originally, windows were fitted above 8.4m height, but these have frequently been replaced with steel plates. Internally the doors are sheeted in 1/2 ” steel plate but only up to 6m height. Doors have sometimes been filled with gravel as blast protection.

    In the original design it is apparent that the steel sheeting on both the front and the rear faces on the door frames, are an integral part of the door structure. The steel plates provide strength and stability to the door frame members, and in the case of the lower diagonal bracing members, act as the gusset connection plates.

    in reply to: Is This An Airfield Building? #1195221
    Creaking Door
    Participant

    …I can see that the lower left window is glazed, as I can see the reflections in it…..as for the rivetting, this was done on comparatively thin material, as a cheaper alternative to welding.

    Yes, the left hand window is glazed (and open) giving a good reflection but wouldn’t it do that even if it was ‘stuck on’ the front of a steel hangar door? And what do you make of the painted-on second storey ‘windows’?

    I can’t imagine what type of building would be constructed of bolted / riveted (or welded) steel plate (over a steel frame) unless it was intended to resist great force at some stage; water tanks, lock gates or the blast doors on a Type-C hangar, yes, but classrooms, offices or housing, I doubt it. Could surplus hangars have been converted to other uses?

    Personally I still think it is elaborate camouflage…most probably at Debden.

    in reply to: Is This An Airfield Building? #1195759
    Creaking Door
    Participant

    I’ve got to admit the door bothers me too…it certainly seems to be ’recessed’ below the level of the steel wall…or do my eyes just want to see it that way? Maybe it is a real door.

    Look also at the vertical window frames. See how the shadow is broader when it falls on the (painted over) ‘pane’ than when it falls on the steel wall. If the frame stands proud by the same amount on either side this would seem to indicate that the windows also are recessed below the level of the steel wall.

    However the second-story ‘windows’ really do look painted on…..and for what other purpose than camouflage…..and why would a ‘false’ extra storey make a building less of a target if the ground floor windows are real? Ergo, if the top windows are false, so are the bottom ones. (Always wanted to say ‘ergo’ in an argument! :D)

    It’s a good one this!

    in reply to: Is This An Airfield Building? #1195770
    Creaking Door
    Participant

    …at the very top left of the shot is what looks like the slope of a roof.

    Isn’t that just a crease on the original photo?

    in reply to: Is This An Airfield Building? #1195885
    Creaking Door
    Participant

    Only the window on the left of the picture seems to be glazed…none of the others are (or possibly they have been painted over)…

    …but look at the top of the photo there are second-story ‘windows’ that really do look just painted on.

    Could the door and ground-floor windows just be false…..made of wood (and in one case glazed) but just fixed on the surface of the original hangar door as elaborate camouflage?

    in reply to: Guppy To Die #1195887
    Creaking Door
    Participant

    Try this website for all things Guppy, it’s very good

    http://www.allaboutguppys.com/

    That’s an excellent site; a history of this unique aircraft together with some good photographs of it in happier times.

    Really amazing that it lasted so long, being such a one-off…..not the most attractive ‘guppy’ conversion either but it must have proved useful to last as long as it did.

    in reply to: Is This An Airfield Building? #1195889
    Creaking Door
    Participant

    You’re right about it being heavily constructed!

    Is it possible that it is an ‘armoured’ hangar door…..and that the door and windows are a very effectively done camouflage?

    If so they are very convincing, especially the open window, but I cannot imagine anybody actually cutting doors and windows through bolted steel plate (if that is what it is).

    in reply to: Guppy To Die #1196533
    Creaking Door
    Participant

    Ooops! Looking at the photo provided by Low’n’Slow I had assumed they were piston engines. 😮

    Still maybe the operator of the Belfast(s) will need them? :diablo:

Viewing 15 posts - 11,431 through 11,445 (of 12,419 total)