Wooden Propeller Forum  

Go Back   Wooden Propeller Forum > Wooden Propeller Identification > "Early" Wooden Propellers

 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 05-31-2015, 09:04 AM   #21
Bob Gardner
Moderator
 
Bob Gardner's Avatar
 
Join Date: Jan 2006
Location: The North of England
Posts: 1,747
Default

Bonjour Pierre-Michel,

I agree. This is not a French made prop. It carries entirely English markings. And I'm sure from your posts that it is of French design, in this instance given a British & Colonial Co drawing number of P23, where the designator letter P indicates B & C. The British could not import sufficient French aircraft, engines and props during WW1 so they were made in Britain under licence.

There are no batch numbers ( G & N numbers) because the prop (and Nieu 17) pre-dated September 1917 when the newly formed Air Board started allocating them.

As the French were the world-leading designers of aero-engines and props at the start of WW1, it became the convention to use their nomenclature, in this case mm for millimetres; hence 2570mm. There was a short period in WW1 when the British used Imperial measurements; hence 8ft 5inches. Not only was it done for a short time but only a few makers did it. As you, the French, and us British had been enemies for at least a thousand years of invasion and warfare, perhaps it was a momentary reversion to type!

Avec le Respect,

Bob
__________________
Bob Gardner
Author; WW1 British Propellers, WWI German Propellers
http://www.aeroclocks.com
Bob Gardner is offline   Reply With Quote
 

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 08:33 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.