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  • Potez 630 (Series) Heavy Fighter / Multirole Aircraft


    This Potez line of multirole aircraft took part in several of the major campaigns of World War 2 - including the failed defense of France in 1940.

     Updated: 4/3/2017; Authored By Staff Writer; Content ¬©www.MilitaryFactory.com


    The Potez 630 series of twin-engine aircraft was introduced with the French Armee de l'Air (French Air Force) in the late-1930s as an all-modern, metal-clad, heavy-class fighter. Its design kept pace with other twin-engine, multi-role developments witnessed during the period - particularly those emerging from Britain and Germany where their proved a need for heavy fighter types to contend with the growing threat of bombers who saw their own technological growth throughout the decade. Heavy fighters were to offer both performance and armament suitable for successfully engaging larger targets and, when outfitted with bombs, could engage ground targets as needed with equal fervor.

    The Potez 630 emerged from a French Air Force requirement of 1934 which called for a multi-role aircraft capable of air control/direction, interception/bomber escorting, and night fighting. Design of the 630 line was attributed to Potez engineers Louis Coroller and Andre Delaruelle and their approach utilized a well-streamlined, metal-skinned body fitting a three-man (seated inline) cockpit at front with a tapering rear section mounting a dual vertical tail fin arrangement. The mainplanes were fitted low along the fuselage sides and ahead of midships with each wing mounting a single radial piston engine along the leading edge. The undercarriage was retractable (save for the tail wheel) and of the "tail-dragger" arrangement which saw two main, single-wheeled legs fitted under each engine nacelle. The long cockpit was covered over in a greenhouse-style canopy with thin framing which offered good views of the surrounding action. The pilot sat at front with a mission specialist at center, and a dedicated gunner at rear. The center crewman position could be eliminated base on mission need and a ventral area allowed for management of lower armament or observation of the passing terrain below. Power was from 2 x Hispano-Suiza 14HBs radials of 580 horsepower each.

    As designed, the aircraft showcased a standard armament suite of 1 x fixed, forward-firing 7.5mm MAC 1934 machine gun and 1 x fixed, rear-firing machine gun of same model and caliber in the ventral gondola. The rear gunner managed another of the same gun, though this on trainable mounting hardware in a dorsal position primarily facing aft.


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    Potez 631 Technical Specifications


    Service Year: 1938
    Type: Heavy Fighter / Multirole Aircraft
    National Origin: France
    Manufacturer(s): Potez - France
    Production Total: 1,100



    Structural (Crew Space, Dimensions and Weights)


    Operating Crew: 3
    Length: 36.32 feet (11.07 meters)
    Width: 52.49 feet (16.00 meters)
    Height: 9.97 feet (3.04 meters)

    Weight (Empty): 6,257 lb (2,838 kg)
    Weight (MTOW): 8,289 lb (3,760 kg)

    Installed Power and Standard Day Performance


    Engine(s): 2 x Hispano-Suiza 14-cylinder 2-row radial piston engines developing 725 horsepower.

    Maximum Speed: 275 mph (442 kph; 239 knots)
    Maximum Range: 746 miles (1,200 km)
    Service Ceiling: 32,808 feet (10,000 meters; 6.21 miles)
    Rate-of-Climb: 1,640 feet-per-minute (500 m/min)

    Armament / Mission Payload


    STANDARD:
    2 x 20mm Hispano-Suiza HS.404 forward-firing cannons.
    1 x 7.5mm MAC 1934 machine gun on flexible mounting in rear cockpit.
    4 x 7.5mm MAC 1934 machine guns under wings

    OPTIONAL:
    4 x 110lb (50kg) bombs

    Global Operators / Customers


    France; Vichy France; Free France; Nazi Germany; Greece; Poland; Romania; Yugoslavia

    Model Variants (Including Prototypes)


    630 - Base Series Designation; Initial Production Model.

    63.01 - Fighter Prototype

    630.01 - Fighter Prototype

    630 CN.2 No.01 - Nightfighter Prototype

    631 - Second Production Model; fitted with Gnome-Rhone engines.

    631.01 - Fighter Prototype; fitted with Gnome-Rhone powerplants.

    631 Ins - Trainer Production Designation; fitted with Gnome-Rhone engines.

    63.11 - Reconnaissance Variant

    63.11 No.1 - Reconnaissance Prototype Designation

    63.11 No.2 - Reconnaissance Prototype Designation

    63.11A.3 - 1 x 7.5mm forward-firing MAC 1934 machine gun; 1 x 7.5mm rearward-firing MAC 1934 machine gun; 1 x 7.5mm MAC 1934 machine gun in flexible mounting in rear cockpit.

    63.12 C3 - Single Prototype Development; fitted with Pratt & Whitney Wasp Junior radial engines.

    63.16 T3 - Single Prototype Crew Trainer Variant based on the 63.11; larger wing surface area.

    632 Bp.2 - Single Dive Bomber Prototype

    633 B2 - Light Level Bomber Designation

    633.01 - Two-Seat Bomber Prototype

    634 - Proposed Trainer Variant

    635 CN2 - Proposed Nightfighter

    671 - Heavy Fighter based on the 670.01 prototypes.

    639 AB2 - Single Two-Seat Attack Bomber