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View Full Version : What does the "W/T" stencil on british planes mean?



Skarphol
04-12-2004, 02:37 AM
Hi!

The last time I had the opportunity to visit Duxford I noticed that many of the earlier planes like the Swordfish had a stencil on the tail and fuselage showing a dashed square with a dashed line diagonal from the lower left to the upper right corner. In the upper left triangle there is a 'W' and in the lower right triangle there is a 'T'. The square was approx. 5" wide and high.
I saw this mark on several planes, including a Hurricane. Does anybody know what this markings means?

Skarphol

"Trying is the first step towards failure!" Homer Simpson

Skarphol
04-12-2004, 02:37 AM
Hi!

The last time I had the opportunity to visit Duxford I noticed that many of the earlier planes like the Swordfish had a stencil on the tail and fuselage showing a dashed square with a dashed line diagonal from the lower left to the upper right corner. In the upper left triangle there is a 'W' and in the lower right triangle there is a 'T'. The square was approx. 5" wide and high.
I saw this mark on several planes, including a Hurricane. Does anybody know what this markings means?

Skarphol

"Trying is the first step towards failure!" Homer Simpson

FW190fan
04-12-2004, 02:40 AM
"Won't Takeoff"



http://ubbxforums.ubi.com/infopop/emoticons/icon_biggrin.gif

http://people.aero.und.edu/~choma/lrg0645.jpg

Tully__
04-12-2004, 03:57 AM
Comedic bump..... wireless telephone?? http://ubbxforums.ubi.com/infopop/emoticons/icon_wink.gif

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Tully

RobertNighthawk
04-12-2004, 04:08 AM
Whips tail.



must be a warning. http://ubbxforums.ubi.com/images/smiley/16x16_smiley-very-happy.gif

T_O_A_D
04-12-2004, 04:12 AM
Won't Turn

Will Tango

WHAT THE

War Time

Wild Thing

Hmm this could go all night http://ubbxforums.ubi.com/images/smiley/35.gif

Have you checked your Private Topics recently? (http://forums.ubi.com/eve/forums?a=ugtpc&s=400102)
131st_Toad's Squad link (http://www.geocities.com/vfw_131st/)
My TrackIR fix, Read the whole thread (http://forums.ubi.com/eve/forums?q=Y&a=tpc&s=400102&f=49310655&m=15310285&p=1)
2.11 drivers (http://home.mchsi.com/~131st-vfw/NaturalPoint_trackIR_2_11.exe)
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Indianer.
04-12-2004, 04:38 AM
there are some silly answers here. back in 1939 an RAF pilot (cant remember name) came up with the idea of getting people who had very little going on in their lives to spend hours contemplating 2 letters he painted on the tail of his hurri. This in turn caught on and pilots of all nationalities painted letters on their planes. Although it took 65 years, these pilots are now seeing there the fruits of their labours right here in this forum.


Congratulations.

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Taylortony
04-12-2004, 04:53 AM
I think if i remember correctly it is to do with the paint spec as is the DTD number beside it, This is the British military specification code (DTD) and covers everything from metal,WAAFS knickers through to paint, superb pics at this site.

http://www.ipmsstockholm.org/magazine/1997/11/stuff_eng_detail_spitfire1.htm

http://www.ipmsstockholm.org/photos/detail_spitfire1_08.jpg
http://www.ipmsstockholm.org/photos/detail_spitfire1_11.jpg

F16_Fatboy
04-12-2004, 05:21 AM
http://www.warbirdalley.com/l4e-fa.htm

Scroll down a bit on the page.

Another one
<pre class="ip-ubbcode-code-pre"> </pre>http://img41.photobucket.com/albums/v125/F16_fatboy/Album1/PICT0032.jpg

http://img41.photobucket.com/albums/v125/F16_fatboy/Album1/sig_fatboy.jpg

fireman196988
04-12-2004, 07:08 AM
Seems "W/T" indicates an electrically-bonded control surface. Probably dealing with the wireless radio and it's antenna.

see this page.

http://www.warbirdalley.com/l4e-fa.htm

look at the caption under the first picture under the "Detail Photos"

Fireman

Tully__
04-12-2004, 10:23 AM
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by fireman196988:
Seems "W/T" indicates an electrically-bonded control surface. Probably dealing with the wireless radio and it's antenna.

see this page.

http://www.warbirdalley.com/l4e-fa.htm

look at the caption under the first picture under the "Detail Photos"

Fireman<HR></BLOCKQUOTE>

Ah ha!! So Wireless Telephone wasn't that far off then http://ubbxforums.ubi.com/infopop/emoticons/icon_wink.gif

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dahdah
04-12-2004, 10:41 AM
That would be pushing a bit. Because of the electrical (static charges) build ups, the components of the a/c had to be 'earthed'.

Supposidly it was a static discharged that started the Hindenburg fire and subsiquent crash. Flying near the thunder storm resulted in a static charge difference between the 'cloth' coverings(the connection had broken). When the spark jumped it ignited the aluminium powered based paint.

BerkshireHunt
04-12-2004, 11:27 AM
So 'WT' is a standard for anti- magnetic paint (coloured dope?) applied to the fabric control surfaces of British aircraft? I've wondered about that for years- thanks for clearing up a minor mystery.

SKULLS Virga
04-12-2004, 11:29 AM
"it ignited the aluminium powered based paint."

I don't understand this sentence? Wasn't it hydrogen?

leadbaloon
04-12-2004, 11:51 AM
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by Virga:
"it ignited the aluminium powered based paint."

I don't understand this sentence? Wasn't it hydrogen?<HR></BLOCKQUOTE>

Apparently not, a study was done into it some time ago which reveealed it was the paint. Hydrogen burns very slowly with a faint blue flame, the aluminium paint that covered the Hindenburg is very similar to the stuff that they use to power the boosters on the space shuttle. http://ubbxforums.ubi.com/infopop/emoticons/icon_eek.gif When ignited the paint bursts into bright orange flame.

Zyzbot
04-12-2004, 11:53 AM
[

[This message was edited by Zyzbot on Mon April 12 2004 at 11:02 AM.]

Zyzbot
04-12-2004, 11:54 AM
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by Virga:
"it ignited the aluminium powered based paint."

I don't understand this sentence? Wasn't it hydrogen?<HR></BLOCKQUOTE>

NO..that myth has been exposed by recent recearch. To make a long story short...the skin covering of the Hindenberg had a composition that was VERY easy to ignite. An expert in hydrogen gas did a lot of research once he viewed the film of the crash and noticed that the fire, smoke , and explosion were different than what would be expected of a hydrogen fire.

They were able to actually find a piece of the Hidenberg skin that had been kept by someone who was at the scene and when it was exposed to electricity it ignited quickly. Turns out that the skin was not that far off of being an explosive!

ELEM
04-12-2004, 12:06 PM
Wireless Telephony.
The reason a/c components are electrically bonded to each other is to avoid static discharges that would cause radio interference. Not to avoid fire or explosion.

[This message was edited by ELEM on Mon April 12 2004 at 11:18 AM.]

dahdah
04-12-2004, 12:21 PM
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by ELEM:
Wireless Telephony.
The reason a/c components are electrically bonded to each other is to avoid static discharges that would cause radio interference. Not to avoid fire or explosion.

]<HR></BLOCKQUOTE>

Yes, the Hindenburg was only an example of a electrical discharge.