__NOTOC__ <!-- This article is a part of Wikipedia:WikiProject Aircraft. Please see Wikipedia:WikiProject Aircraft/page content for recommended layout. --> {{Infobox aircraft | name = CAMS 31 | logo = | logo_size = | image = C.A.M.S. 31.png | alt = | caption = | long_caption = | other_names = | aircraft_type = Single-seat fighter flying-boat | aim = | outcome = | related = | national_origin = France | manufacturer = CAMS | design_group = | designer = | builder = | issuer = | status = | owners = | primary_user = | more_users = | service = | major_applications = | proposals = | prototypes = | number_built = 2 | construction_number = | civil_registration = | military_serial = | radio_code = | requirement = | aircraft_carried = | flights = | total_hours = | total_distance = | construction_date = | introduction = | retired = | first_flight = 1922 | initiated = | in_service = | last_flight = | expected = | developed_from = | variants = | developed_into = | preservation = | fate = | predecessors = | successors = | concluded = }} The '''CAMS 31''' was a 1920s French single-seat fighter biplane flying-boat designed and built by Chantiers Aéro-Maritimes de la Seine (CAMS).<ref name="orbis" />

==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.<ref name="orbis" /> Powered by a Hispano-Suiza 8Fb inline piston engine driving a pusher propeller, the engine was strut mounted between the wings.<ref name="orbis" /> The CAMS 31 was armed with two fixed hull-mounted Vickers machine-guns in the bow.<ref name="orbis" />

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.<ref name="orbis" /> Testing proved the flying-boats handled well but were just not suitable as fighters and no more were built.<ref name="orbis" />

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. ;CAMS 31P :Postal variant

==Specifications (CAMS 31 Type 22)== {{Aircraft specs |ref=<ref name="orbis" /> |prime units?=met <!-- General characteristics --> |genhide=

|crew=1 |capacity= |length m=8.80 |length ft= |length in= |length note= |span m=11.20 |span ft= |span in= |span note= |upper span m= |upper span ft= |upper span in= |upper span note= |mid span m= |mid span ft= |mid span in= |mid span note= |lower span m= |lower span ft= |lower span in= |lower span note= |swept m=<!-- swing-wings --> |swept ft=<!-- swing-wings --> |swept in=<!-- swing-wings --> |swept note= |dia m=<!-- airships etc --> |dia ft=<!-- airships etc --> |dia in=<!-- airships etc --> |dia note= |width m=<!-- if applicable --> |width ft=<!-- if applicable --> |width in=<!-- if applicable --> |width note= |height m=3.05 |height ft= |height in= |height note= |wing area sqm=33.00 |wing area sqft= |wing area note= |swept area sqm=<!-- swing-wings --> |swept area sqft=<!-- swing-wings --> |swept area note= |volume m3=<!-- lighter-than-air --> |volume ft3=<!-- lighter-than-air --> |volume note= |aspect ratio=<!-- sailplanes --> |airfoil= |empty weight kg=1045 |empty weight lb= |empty weight note= |gross weight kg= |gross weight lb= |gross weight note= |max takeoff weight kg=1505 |max takeoff weight lb= |max takeoff weight note= |lift kg=<!-- lighter-than-air --> |lift lb=<!-- lighter-than-air --> |lift note= |more general= <!-- Powerplant --> |eng1 number=1 |eng1 name=Hispano-Suiza 8Fb |eng1 type=inline piston engine |eng1 kw=<!-- prop engines --> |eng1 hp=<!-- prop engines -->300 |eng1 kn=<!-- jet/rocket engines --> |eng1 lbf=<!-- jet/rocket engines --> |eng1 note= |power original= |thrust original= |eng1 kn-ab=<!-- afterburners --> |eng1 lbf-ab=<!-- afterburners -->

|prop blade number=<!-- propeller aircraft --> |prop name= |prop dia m=<!-- propeller aircraft --> |prop dia ft=<!-- propeller aircraft --> |prop dia in=<!-- propeller aircraft --> |prop note= <!-- Performance --> |perfhide=

|max speed kmh=200 |max speed mph= |max speed kts= |max speed note=at sea level |max speed mach=<!-- supersonic aircraft --> |cruise speed kmh= |cruise speed mph= |cruise speed kts= |cruise speed note= |stall speed kmh=<!-- aerobatic --> |stall speed mph=<!-- aerobatic --> |stall speed kts= |stall speed note= |never exceed speed kmh= |never exceed speed mph= |never exceed speed kts= |never exceed speed note= |minimum control speed kmh= |minimum control speed mph= |minimum control speed kts= |minimum control speed note= |range km=400 |range miles= |range nmi= |range note= |combat range km= |combat range miles= |combat range nmi= |combat range note= |ferry range km= |ferry range miles= |ferry range nmi= |ferry range note= |endurance=<!-- if range unknown --> |ceiling m= |ceiling ft= |ceiling note= |g limits=<!-- aerobatic --> |roll rate=<!-- aerobatic --> |glide ratio=<!-- sailplanes --> |climb rate ms= |climb rate ftmin= |climb rate note= |sink rate ms=<!-- sailplanes --> |sink rate ftmin=<!-- sailplanes --> |sink rate note= |lift to drag= |wing loading kg/m2= |wing loading lb/sqft= |wing loading note= |disk loading kg/m2= |disk loading lb/sqft= |disk loading note=

|power/mass met= |power/mass imp= |power/mass note= |thrust/weight= |thrust/weight note=

|more performance= <!-- Armament --> |guns= 2 × fixed bow-mounted Vickers machine guns }}

==See also== {{aircontent <!-- include as many lines are appropriate. additional lines/entries with carriage return. --> |see also= |related=<!-- related developments --> |similar aircraft=<!-- similar or comparable aircraft --> |sequence=<!-- designation sequence, if appropriate --> |lists=<!-- related lists --> *List of flying boats and floatplanes }}

==References== {{commons category|CAMS 31}}

===Notes=== <references>

<ref name="orbis">Orbis 1985, p. 999</ref>

</references>

===Bibliography=== {{refbegin}} *{{cite book |title= The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985)|publisher= Orbis Publishing}} {{refend}}

<!-- ==External links== --> {{CAMS aircraft}}

Category:Flying boats Category:1920s French fighter aircraft 31 Category:Single-engined pusher aircraft Category:Biplanes