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| Morane-Saulnier M.S.406 | |
|---|---|
| Name | Morane-Saulnier M.S.406 |
| Type | Single-seat fighter |
| Manufacturer | Morane-Saulnier |
| First flight | 1935 |
| Introduced | 1938 |
| Primary user | Armée de l'Air |
| Produced | 1,000+ (approx.) |
Morane-Saulnier M.S.406 is a French single-seat fighter designed and built by Morane-Saulnier in the mid-1930s. It served prominently with the Armée de l'Air during the early stages of World War II, seeing action in the Battle of France and with export users in conflicts such as the Winter War and the Battle of Britain indirectly through captured examples. The type represents an evolutionary link between interwar designs and later wartime fighters developed by firms including Dewoitine, Breguet, and Potez.
The M.S.406 emerged from a 1934 French specification influenced by requirements from the Ministry of Air and advocacy within the Aéronautique Militaire for a modern monoplane to replace biplanes like those of Breguet 19 lineage and rivals such as the Hawker Fury and Gloster Gladiator. Led by chief designer Paul-Richard Morane-Saulnier engineers sought to combine the structural advances demonstrated by Boeing and Heinkel with the compact agility prized by pilots of the Aéronautique Navale. Prototypes incorporated an Hispano-Suiza V12 engine installation and retractable undercarriage tested alongside radiators trialled on types from Savoia-Marchetti and Fiat. Evaluation panels comprising members of the Armée de l'Air and the Service Technique de l'Aéronautique compared the M.S.406 against contenders including designs from Dewoitine, Potez, Bloch, and Nieuport-Delage.
Production orders were placed amid escalating tensions with Nazi Germany and in the context of rearmament policies promoted by leaders such as Léon Blum and ministers of the Third Republic. Suppliers across the French aviation industry—subcontractors like Gnome et Rhône, Société Nationale de Constructions Aéronautiques du Centre, and metalworkers tied to Schneider holdings—scaled manufacturing to meet orders while facing shortages similar to those confronting Royal Air Force procurement and Regia Aeronautica modernisation.
The M.S.406 featured a low-wing cantilever monoplane configuration with mixed construction: a metal fuselage frame skinned with plywood and fabric sections, reflecting contemporaneous practice seen in Fokker and Heinkel types. Its powerplant was typically a liquid-cooled Hispano-Suiza 12Y driving a two-blade variable-pitch propeller comparable to units used by Messerschmitt Bf 109 predecessors and Curtiss P-36 Hawk models. Armament usually comprised a fuselage-mounted Hispano-Suiza HS.404 cannon firing through the propeller hub and two synchronized MAC 1934 machine guns, paralleling armament philosophies from Supermarine Spitfire early armament studies and Bf 110 heavy fighter concepts.
Cockpit ergonomics reflected input from test pilots trained at schools such as Ecole de l'air and operational feedback from units stationed at bases including Toul, Reims, and Le Bourget. Radio equipment was supplied by firms akin to SAGEM and Thomson-Houston while avionics packages echoed trends in Royal Navy and Luftwaffe communication suites.
Entering frontline service in 1938, the M.S.406 was the most numerous French fighter at the outbreak of World War II. Squadrons equipped with the type flew interceptions against German Luftwaffe raids during the Phoney War, later contesting air superiority during the rapid Blitzkrieg that culminated in the Fall of France in 1940. Pilots from units such as GC I/2 and GC III/6 recorded engagements with adversaries including pilots from Jagdgeschwader 51, Jagdgeschwader 54, and forces operating Messerschmitt Bf 109 and Heinkel He 111 aircraft.
Captured M.S.406s were pressed into service by German units and sold to allied or satellite air arms including Regia Aeronautica and the air arms of Romania and Finland. Finnish pilots operating the type during the Continuation War and the Winter War reported that, despite being outclassed by newer Yakovlev Yak-1 and Lavochkin models, the M.S.406 could be effective in the hands of experienced aces familiar with tactics seen in units such as No. 303 Squadron RAF and formations influenced by Marschall Göring era doctrines.
Variants ranged from prototype derivatives to export conversions. Notable versions included prototypes fitted with alternative powerplants from Rolls-Royce and BMW for comparative trials, export batches modified for Finnish Air Force requirements, and locally assembled examples under license in countries that engaged firms like SNCASE and Société Lorraine. Developmental offshoots influenced later designs by Dewoitine and Bloch while specific attempts to up-gun and re-engine the airframe paralleled programs at Hawker and Fokker.
Primary operators included the Armée de l'Air and the Armée de l'Air Belge via prewar orders. Captured and transferred aircraft were used by Luftwaffe evaluation units, the air forces of Finland, Romania, Switzerland, and smaller operators in Yugoslavia and Hungary. Training and reserve units in the occupied territories and Vichy-controlled regions continued limited operations under command structures derived from the Vichy France administration and oversight involving officials linked to the Stavka and diplomatic channels with Italy.
Production was conducted at Morane-Saulnier factories and subcontracting plants located in regions including Le Havre, Bordeaux, and Lyon. Output faced disruption after the Battle of France and subsequent German occupation, resulting in assembly lines retooled for German requirements and the diversion of parts to firms tied to the Reichsluftfahrtministerium. Approximately one thousand airframes were completed, with deliveries curtailed by strategic bombing campaigns staged by formations like RAF Bomber Command and interdiction of supply routes used by Allied convoys.
A small number of M.S.406 airframes survive in museum collections and private restoration projects across Europe and North America. Examples are exhibited at institutions such as the Musée de l'Air et de l'Espace, the Finnish Aviation Museum, and smaller national collections in Romania and Switzerland. Restorations often rely on archival materials from archives linked to Service Historique de la Défense and technical drawings preserved at repositories associated with Société Nationale d'Étude et de Construction de Moteurs and private aficionados connected to groups like the Comité de Restauration Historique.
Category:Morane-Saulnier aircraft Category:1930s French fighter aircraft