SNCASE SE.100
French prototype of heavy fighter
The SNCASE SE.100 was a French two-seat, twin-engined fighter that first flew in 1939. Mass production was planned to begin late in 1940 but the Fall of France prevented this.
Design and development
The origins of the SE.100 predate the creation of the SNCASE (Sud-Est) company in the nationalisations of 1937. It was designed by Pierre Mercier and Jacques Lecarme at Lioré et Olivier and was initially designated the LeO 50. Underpowered by two Gnome-Rhône 14M engines, the design was recast to use the more powerful Gnome-Rhône 14N-20 and -21 engines, the same used in the Lioré et Olivier LeO 451 bomber, and renamed the SE.100. The aircraft was of conventional all-metal construction, having a mid-wing layout. As with most French twin-engined aircraft of the era, the engines were handed, one airscrew rotating clockwise and the other anti-clockwise, to minimise torque. The aircraft had a twin tail. In production models it was planned to redesign the wing to use components from the LeO 451 wing to ease production. The fuselage was short in appearance, with a long nose and a very short tail, the cockpit being connected to the gunner's position aft by a windowed corridor.
Begin with the source’s own compact description: “SNCASE SE.100” is french prototype of heavy fighter. The dossier treats that line as a proposition to test through SNCASE, French and prototype, not as a finished interpretation.
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Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Nov 8, 2025. The linked authority identifier is Q573633. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1939, 1940 and 1937.
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This entry incorporates text from “SNCASE SE.100” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.