CAMS 31
type of aircraft
The CAMS 31 was a 1920s French single-seat fighter biplane flying-boat designed and built by Chantiers Aéro-Maritimes de la Seine (CAMS).
Design and development
The CAMS 31 was a wooden-built two-bay equal span biplane with stabilising floats under each wing and an open cockpit forward of the lower-wing for the pilot. Powered by a Hispano-Suiza 8Fb inline piston engine driving a pusher propeller, the engine was strut mounted between the wings. The CAMS 31 was armed with two fixed hull-mounted Vickers machine-guns in the bow.
The CAMS 31 prototype, later designated the CAMS 31 Type 22, first flew in 1922. A second prototype, the CAMS 31 Type 23, flew in 1923 with a reduced-span wing and wider chord but still had the same wing area as the Type 22. Testing proved the flying-boats handled well but were just not suitable as fighters and no more were built.
A mail carrying postal variant was designated CAMS 31P
Variants
CAMS 31 Type 22
Original wing
CAMS 31 Type 23
Reduced span extended chord wing of same area
CAMS 31M
Proposed production fighter, not proceeded with.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Dec 24, 2025. The linked authority identifier is Q5008672. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1922 and 1923.
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This entry incorporates text from “CAMS 31” 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.