British aircraft window identification

[mkjess123]

Hi,
I have had the below, what I believe to be an aircraft window for approx 20 years and I was wondering if anybody can identify it.
It is made from some form of polycarbonate (or similar material) and is approx 38 3/4" tall, 17 1/2" at the bottom and 4" at the top. It is 1" thick.
I was wondering if it might be from the nose of a Handley Page Victor.


Thanks.

[Tony1963]

It doesn’t appear to match the shape of any of the Victor’s windows

[DavieBNL]

If you think it's a V-Bomber, Valiant cound be a contender rather than a Victor. https://www.thunder-and-lightnings.co.uk/valiant/w...

[mkjess123]

Thanks for the replies.

My thoughts on it being from the Victor were that the shape seems similar to the ones in the nose.

It's flat and not much else is coming to mind?

[andyA700]

Non curved glass/polycarbonate doesn't sound right for a fixed wing aircraft, could it be from a helicopter?

https://www.ppgaerospace.com/getmedia/9a556385-c53...

[Simpo Two]

Could it be just an offcut from a sheet of 1" acrylic?

[Tony1963]

There’s not one window on any V-bomber that is that shape. Look closely. The bomb aimer’s windows on the nose of a Victor, for example, are symmetrical about their longest axis, the OP’s piece of transparency isn’t.

[andyA700]

I have just seen that helicopter polycarbonate screens are only 0.15" thick.

https://www.penzproductsinc.com/thermoforming-clea...

The following article is all about aircraft windscreen construction.

http://www.ingaero.uniroma1.it/attachments/2176_Ex...

[mkjess123]

Thanks for the replies.

The helicopter idea was one that I hadn't thought of, but yes, it is 1" thick so that's out of the question.

I'm quite sure that it's not an offcut as the edges are clearly machined, and the top and bottom edges have a concave shape machined into them.

[Steve_D]

If it is an aircraft part then I would expect it to be marked with a part number and also a serial number. Traceability of parts is a very high priority in both military and commercial.

Steve

[Tony1963]

Steve_D said:

If it is an aircraft part then I would expect it to be marked with a part number and also a serial number. Traceability of parts is a very high priority in both military and commercial.

Steve

Either a serial number or batch number plus date of manufacture, at least.

[Eric Mc]

Not British but it reminds me a bit of the eyebrow windows from a Boeing (707/720/727/ 737 - older versions)?

[55palfers]

Definitely not Boeing eyebrow.

I used to work for a company (Triplex) that made almost every flight deck transparency for British (and some foreign) planes since before WW2.

Pretty sure it's not from a plane - maybe a boat?

[Skyrocket21]

Vickers VC-10 had small little windows above the main ones, probably the wrong shape, the one to the right looks triangular but wider at the top



Probably way out because I just read the description, it's 3 feet tall, must make it a cockpit something if from a plane

Concorde had some triangular shaped cockpit windows, probably made from something very special.

Edited by Skyrocket21 on Tuesday 9th August 09:37

[mkjess123]

I will check it today for any markings.

During the mid 90s I bought (for next to nothing) a couple of crate loads of parts from an RAF disposal company. Included were many great aircraft parts such as Pip pins, Aeroquip parts etc virtually all of which were new and unused. Within this was this window which may have been used previously. Hence why I'm quite confident that it was from something on the RAF inventory.

Eric. Thanks for your respected imput. Were the modern Boeing aircraft in use within the RAF prior to then?

[mkjess123]

Sorry 55palfers, I saw your reply after posting my last comment.

[DavieBNL]

How about this upper one/

[KTF]

For the risk of sounding stupid, I thought all aircraft glass and panels had rounded edges after what happened to the de Havilland Comet?

The piece you show looks pretty 'pointy' to me.

[Tony1963]

KTF said:

For the risk of sounding stupid, I thought all aircraft glass and panels had rounded edges after what happened to the de Havilland Comet?

The piece you show looks pretty 'pointy' to me.

The corners of the hole in the airframe will be rounded.

[ecsrobin]

What about an RAF tug/tractor window?



Dennis mercury MD300



Douglas DC-12

Edited by ecsrobin on Tuesday 9th August 14:17