In french litterature (1) the first Gourdou-Leseurre is designed Gourdou-Leseurre GL.a
As this plane was taking part in the C1 programme (C1 : single seat fighter), I suppose that some authors gave it also the name Gourdou-Leseurre-C1
The 9th january 1917 Charles Gourdou and Jean Leseurre filled the pattent FR504302
for a monoplane with a heighten wing. Three additives were filled later for that plane : FR22526 (19 march 1917), FR22527 (5 april 1917) and FR22528 (13th june 1917).
A prototype is immediately ordered by the "Ministère des Inventions", the minimum speed expected is 140 km/h.
The plane is finished at the end of 1917 and starts its manufacturer tests at Villacoublay. After several modifications, the official tests begins the 10th mai 1918, Lt Lebeau is the pilot . The speed reached is 240 km/h (with a 180hp engine... ).
In 1918 part of the french military authorities is opposed to monoplanes. After the crash of a Morane-Saulnier monoplane, the Gourdou-Leseurre GL.a
is retired. Its successor the Gourdou-Leseurre GL.b
is built with a reinforced framework (one of the visible modification is the double "wing pylon" of the GL.b).
was built in 1922-23, 20 were ordered.
(1) of the first
engine : 1 x 180 hp Hispano-Suiza 8 AB
wing span : 9,00 m
length : 6,60 m
height : 2,30 m
wing surface : 16,65m2
empty weight : 600 kg
all-up weight : 786 kg
max speed : 242 km/h
ceiling : 7000 m
range : 300 km
crew : 1
(1) Source :
- Avions n°23, 24, 25 (1995)
- Le Trait d'Union n°208 (2003)
- L'aviation de chasse française 1918-1940 - DOCAVIA n°2