The prototype, called L-2, was built in 1926-27. It has a steel tube fuselage, and rectangular wooden wing. The tail was two fins, one above and one below the fuselage. The entire plane was fabric covered, except the 283 kW (380 hp) Gnome-Rhône 9A Jupiter engine, which was left uncowled. The prototype was flown to Copenhagen, and demonstrated there to several countries.
Six prototype L-3s were constructed. They had a larger 313 kW (420 hp) Jupiter, steel spars instead of wood, and stronger struts, allowing for shipboard catapult launching. After successfully testing the L-3, the French navy ordered 14 production GL-810 HY aircraft. The first production 810 HY flew on 23 September 1930, taking off from the Seine at Les Mureaux. In 1931, 20 GL-811 HYs were ordered, for operation from the seaplane carrier Commandant Teste and from 1933 to 1934 twenty-nine GL-812 HYs and thirteen GL-813 HYs were ordered.
Variants
Gourdou-Leseurre L-2
The initial prototype of the catapult-launched floatplane observation aircraft.
Gourdou-Leseurre L-3
Six prototype development aircraft with revised structure.
Gourdou-Leseurre GL-810 HY
Initial production - 24 produced for Aeronavale.[1]
While most aircraft had been retired by 1939, that August the remaining aircraft were brought together to re-equip the recently re-activated and mobilized Escadrilles 1S2 and 3S3 at Cherbourg and Berre-l'Étang, respectively and perform coastal anti-submarine patrols.
Specifications (812 HY)
Data from The Encyclopedia of World Aircraft,[5] Aviafrance : Gourdou Leseurre GL-812 HY[3]
Guns: 1 x fixed forward-firing synchronised 7.7 mm (0.303 in) machine gun and 2 x 7.7 mm (0.303 in) Vickers machine guns on a flexible mount in the rear cockpit
^Parmentier, Bruno (2 August 2001). "Gourdou Leseurre GL-810 HY". Aviafrance (in French). Paris. Retrieved 2 February 2019.
^Parmentier, Bruno (4 August 2001). "Gourdou Leseurre GL-811 HY". Aviafrance (in French). Paris. Retrieved 2 February 2019.
^ a bParmentier, Bruno (2 August 2001). "Gourdou Leseurre GL-812 HY". Aviafrance (in French). Paris. Retrieved 2 February 2019.
^Parmentier, Bruno (4 August 2001). "Gourdou Leseurre GL-813 HY". Aviafrance (in French). Paris. Retrieved 2 February 2019.
^Donald, David, ed. (1997). The Encyclopedia of World Aircraft. Prospero Books. p. 463. ISBN 1-85605-375-X. {{cite encyclopedia}}: Missing or empty |title= (help)
Bibliography
Wikimedia Commons has media related to Gourdou-Leseurre GL-812 HY.
Cortet, Pierre (June 2000). "Rétros du Mois" [Retros of the Month]. Avions: Toute l'Aéronautique et son histoire (in French) (87): 6. ISSN 1243-8650.
Donald, David, ed. (1997). The Encyclopedia of World Aircraft. Prospero Books. p. 463. ISBN 1-85605-375-X.