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Technical Specifications
Heavy Fighter bimotor
Date first flight
March 29, 1939
15,70 m
11,80 m
4.28 m
Wing Area
33.06 m²
Empty Weight
5732 kg
Max. Takeoff Weight
7678.5 kg
Cruising Speed
499 km/h
Maximum Speed
580 km/.h at 5600m
Climbing Speed
Service ceilling
1300 kms
3 Men
2 Radial Engine Gnôme & Rhône 14N 20-21 14 Cyl air-cooling of 1080 Hp
4 Cannons HS-404 of 20mmin the nose
1 Cannon HS-404 of 20mm in dorsal position
1 Cannon HS-404 of 20 mm in ventral position



Two prototypes were built before the Armistice.



The Ministry of Air issued a program to replace the Potez 631, which had just returned to service. The SNCASE responded to it via a project that was original. Its designers, engineers Mercier and Lecarme, propose a study of three-wheelers with a large front wheel and two retractable secondary wheels in the rear drifts. The fuselage is entirely metallic, in steel tubes coated with Duralumin sheets. To improve handling, the flaps are located at the ends of the wing, integrating part of the wing salmon. It is powered by two engines Gnome-Rhone 14 Super Mars of 800 HP. This prototype is first known as LeO 50, then becomes SE 100 when it receives Gnome-Rhone 14 N20 / 21 from 1030 CV.

SE 100 n � 01 made its first flight on March 29, 1939. The first tests led to some modifications such as the addition of a retractable drift under the aircraft. The prototype, transferred to Marignane to continue its tests, was destroyed by a crash in April 1940.

The construction of a second prototype is launched at Courneuve. The arming of the unit has been considerably strengthened. Six HS 404 cannons are now installed in the front tip. Two others are placed in the upper turret behind, and finally a last cannon is placed in the ventral position. In addition, the corridor which allowed the connection between the front and rear station is condemned for receive an additional tank.

Again, the German advance put an end to promising tests prematurely. Serial production had already been organized to start in the Citroen factories in June 1940, with an expected delivery of the first aircraft at the end of the year.

The model was to be slightly different from the last prototype. He was to receive a wing close to that of the Leo 451, to be equipped with a front axle with two wheels twinned, and received a tenth cannon of 20mm under the belly.

Two variants of the SE100 have been considered:

    • SE 101: powered by Pratt and Whitney Twin Wasp
    • SE 102: powered by Gnome-Rhone 14 N2 / 3 of 1050CV Google�


1 ) _Editions Larivière :
Le Fanatique de l'Aviation No 380



2) _ AVIA Editions DOCUMENT'Air No4

SNCASE SE100 Chasseur lourd Polyvalent



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