The Lorraine 12F Courlis was a
W-12 (broad arrow)
aero engine introduced in France in 1929. It was not widely used.
Design and development
In 1926 Lorraine introduced a series of
V-12 and
W-12 engine
A W12 engine is a twelve-cylinder piston engine where three banks of four cylinders are arranged in a W configuration around a common crankshaft.
W12 engines with three banks of four cylinders were used by several aircraft engines from 1917 unt ...
s with steel cylinders screwed into
aluminium alloy
An aluminium alloy (or aluminum alloy; see spelling differences) is an alloy in which aluminium (Al) is the predominant metal. The typical alloying elements are copper, magnesium, manganese, silicon, tin, nickel and zinc. There are two principa ...
engine blocks. There were two W-12s which shared the name Courlis (Curlew), the first of them was the
12E which provided from a swept volume of . This was followed by the larger 12F, giving from .
[
The 12F was officially homologated on 21 August 1929][ and displayed at the 1930 Paris Salon.][ Unlike the 12E, which powered many different aircraft types, the 12F was not so widely used.
]
Variants
;Lorraine 12Fa:
;Lorraine 12Fb:
;Lorraine 12Fd:
Applications
* Hanriot A.3 (1924 STAé specification ?)
* I.A.R. CW-8
* Nieuport-Delage NiD.540
* Nieuport-Delage NiD.580
* Nieuport-Delage NiD.623
*Potez 50
The Potez 50 or Potez 50 A2 was a French two seat military multi-rôle aircraft, first flown in 1931. It did not go into service but seven variants using five different engines were produced, one of them setting several speed with useful load re ...
*SAB AB-20
The SAB AB-20 was a large four engine twin boom French bomber built in the early 1930s as a development of the Dyle et Bacalan DB-70 airliner. It featured a lifting body of thick airfoil section between the inner engines. It was later modifie ...
Specifications (12Fa)
References
{{Lorraine aeroengines
1920s aircraft piston engines
12F