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faller pierre olivier
02-17-2015, 02:55 PM
hello my name is FALLER PIERRE OLIVIER
i'm french living in aréa of 'alsace'
i have found a propeller from the first world war at my aunt (or poofter)
sorry for my bad english i used a internet translater
the model is a axial from Berlin.
in a first time i think it's a propeller from a Fokker dr1 but a man tell me that's it's not possible because Fokker have no 200ps.
i would like to know which aircraft it comes?
thank you for your help.
the plane would spit between the village of 'dambach-la-ville'and 'scherwiller' in france in the area of 'alsace'

of the propeller there is written:
4493
axial
berlin
200ps benz D292 ST190
TP 127
http://imageshack.com/a/img537/2743/4dBX0S.jpg
http://imageshack.com/a/img673/7669/YNymj7.jpg
http://imageshack.com/a/img538/2959/ThiAfj.jpg
http://imageshack.com/a/img661/2215/EDbAXd.jpg
http://imageshack.com/a/img540/8028/YKSJsZ.jpg
http://imageshack.com/a/img537/7949/dzYTxq.jpg
http://imageshack.com/a/img901/6704/aHgvDA.jpg

by looking at the different model I have noted that some had a kind of shroud on the nose of the plane and my helix appears to have traces of wear to refit

http://imageshack.com/a/img673/9513/2WUcxi.jpg
http://imageshack.com/a/img540/5300/IZ7UA0.jpg

Bob Gardner
02-18-2015, 07:19 AM
Bonjour Pierre,

Welcome to the forum.

The data on your prop translates as;

4493 Axial's serial number
Axial The maker
Berlin The maker's location
200ps Benz the engine, 200hp made by Benz
D292 Diameter in cm
ST190 The pitch in cm
TP 127 Axial's type number

Your prop was made for German C Class aircraft, which were two-seater armed biplanes with an engine of more than 150ps.

German propellers were not designed and made for a type of aircraft, which is what the French and British did, but for a class of aircraft, so your prop could have been fitted to several types. Known examples are;

DFW CV
LVG CV
Junkers JI
Albatros JI, C VIII
Rumpler C III
Halberstadt C V

With kind regards,

Bob

faller pierre olivier
02-18-2015, 11:06 AM
thank you very much for your help bob.i had already identify different data one of your precedent post on the forum.i would like to know if there is a way to know specifically what type of aircraft it's thanks to the shape of the trace cache nose of the plane?

faller pierre olivier
02-18-2015, 11:24 AM
i don't really understand what is the 'pitch' désignation.
it's the inclination of the propeller?

Bob Gardner
02-19-2015, 06:09 AM
Pitch is the theoretical distance the aircraft will move through still air in one revolution of the propeller.

The reason why the data is on both the hub and the blade is because if a spinner, also called a nose cone, was fitted on the hub, the data on the hub would not be visible, so it was repeated on one of the blades.

It is not possible to link your propeller to a particular make of aircraft, only the class, C.

My list below is of aircraft that I have recorded with a type 127 Axial prop. Some makers appear to have fitted a spinner to every aircraft (such as the Albatross C VIII). But other makers such as LVG, fitted a spinner to some Class C aircraft but not all. I have not seen a photograph of a Halberstadt CV with a spinner, but this does not mean that all these aircraft were made without a spinner.

DFW C V spinner
LVG C V some
Junkers J I spinner
Albatros J I some
Albatros C VIII spinner
Rumpler C III some
Halberstadt C V none known.

Your propeller can only be described as from a C class aircraft.

With kind regards,

Bob

faller pierre olivier
02-22-2015, 04:45 PM
I currently research to locals archives crash. but it will be long because I have to translate 1600 pages of old German. péridode for 1916 to 1918 (engine design bz.4)