Luftwaffe Fuel Codes on Yellow Triangles

Ad: This forum contains affiliate links to products on Amazon and eBay. More information in Terms and rules

R

Rodd1951

Airman
86
77
Nov 20, 2020
Hi All,
Could someone tell me (or point me in the right direction please) for a list of codes which were painted on the yellow triangles to tell ground crew what Fuel or Oil etc should go into each filler.
Many Thank in advance
Rodd
 
"Typenhandbuch der deutschen Luftfahrttechnik" - RLM-Klassifizierungssystem für Flugkraftstoffe ...

A1, A2, A3, A4, A5, B1, B2, B3, B4 (87), C1, C2, C3, K1 and J1,J2.

Mostly used .....

A3, B4 over 87 or just 87 only, C3, J2.
 
HI Wurger,

Yes those are the ones Thank You, have you got a translation into English as to what each code represents.. Sort of "100 Octane Petrol/Gasoline is A1" etc?

Thanksa gain

Rodd
 
Hi Wurger,

Thank you for the information and the links, I can go and do some research.

For Info I am trying to improve the signage on the Me-262 in our museum (yes I know its not High Octatne its a jet) as we have several yellow triangles with no code letters in them
so having started looking too w hat they should contain I realised I did not know what the codes actually meant. Set myself task

Regards
Rodd
 
Hi Viking Berserker,

Its the RAF Museum Midlands @ Cosford near Wolverhampton.

We are working through the exhibits one by one doing a very detailed examination and repair/replace/correct/document etc. as required to make sure they are as good as they can be and of course to preserve them for them for future - All subject to the Curators approval of course.

Regards
Rodd

ps. having just watched the film "The Northsman" I now know what your 'handle' means
 
Going by memory, the Me262 had several "triangles" located on both engines nacelles and fuselage.

The two triangles on each engine nacelle (foreward, above the intake) were for the Riedel starter. One would have been fuel (A3) and the other would been for the oil supply.

The ones on the fuselage (two ahead of the cockpit and one directly behind) would have been for the jet's fuel tanks, and I don't recall the fuel code.
 
According to a couple of books for the Me 262 the stencils on the engine nacelles should be: the left one - "A3" for the filler of the Riedel starter motor while the right one - "B4 mit 3% Schmierstoff" for the fuel of the initial engine start . On the NASM's Me 262 the nacelle stencils applied as "20 TL Benzin 1TL Oel" and "87".
It should be kept in mind that the Jumo 004 could run on three fuel kinds. The B4 high octane gasoline mixed with oil , the Diesel fuel and the J2 synthetic fuel.
So ... these three stencils on the fusealge could be either "B4" or "Flug Diesel Triebstoff" writing instead. Not sure what marking was used for the J2 jet fuel. I have to dig deeper.
 
Rodd1951 said:
Hi All,
Could someone tell me (or point me in the right direction please) for a list of codes which were painted on the yellow triangles to tell ground crew what Fuel or Oil etc should go into each filler.
Many Thank in advance
Rodd
Click to expand...
There was a very good reference site for (almost) everything around Me-262 called "stormbirds.com". Unfortunately something bad happened to it and because of copyrights or else, all the visual information disappeared. There was a page dedicated to stenciling and it still exists, but no photos have been saved:
Thanks God, there is this wonderfull something called "Wayback Machine" and with some luck guys like me still find long gone treasures. Here it is:
There is obviously a difference between the standard fuel triangles and those in NASM.
Cheers!
 
Last edited:
Hello,
Thank you everyone for all the information on the stencilling its exactly what I needed - Brilliant.
I can sort out with our finishing specialist what we are going to do, I will have to wait a bit though as he is busy finishing off the recovering the wellington fuselage.

Thank you all once again - Noch einmal Danke zusammen ( I think!)
Rodd
 
Unless I am reading it wrong, the "20 TL Benzin 1 TL Oel" indicates that you are to use 20 parts gasoline (aka Benzin, technically any grade but even motorpool petrol would be OK) to 1 part oil, measured in teaspoons. Does that make sense for the amount of fuel needed for the starter motor? Or is it just the ratio of 20:1 gasoline to oil?

TL = teelöffell = teaspoon = ~5 ml
 
Although that raises the question of how much of the "20 TL Benzin 1 TL Oel" was used in the ignition process. Was it a one shot on the ground deal? If the turbine did not fire-up the first time did they have to refill the fuel/oil reservoir for another try? Or did the engine turbine fire-up so reliably that the small reservoir was not an issue?
 
I don't recallnthe tank's capacity, but I'm sure it was enough for several starts.

A jet engine is fairly simple in the combustion process, unlike a gasoline engine. Once you have enough RPMs to the compressor, it doesn't take much to start ignition.
 
Just a note... the A3 fuel was the 80 octane one while the B4 was of the 87 octane gasoline.
The annular fuel tank for the Riedel-Anlasser RBA/S10 starter engine was of capacity 3 litres . The tank for the initial engine start ( B4/87 ) was of capacity 15l ( .4 gal )

Judging by the pics below the Czechoslovakian Avia S-92 used a different mixtures ...






the pic source: the net.
 
You must log in or register to reply here.

Users who are viewing this thread

Total: 1 (members: 0, guests: 1)

Similar threads

Fuel consumption in factory tests of serial airplanes and engines
Replies
7
Views
304
yosimitesam
S
FW 190 External (Drop-) Tank Electrical Pump EP-1 E
Replies
8
Views
287
Wurger
Corsair main fuel tank issues?
Replies
4
Views
1K
CD Baumann
P
Does anyone know what's written on this instruction plate?
Replies
9
Views
717
Currell
C
Where was the gun camera on the Bf 110?
Replies
6
Views
525
Snautzer01
Menu
Log in
Register