Morane-Saulnier M.S.325

M.S.325

Morane-Saulnier M.S.325
Role	Fighter
National origin	France
Manufacturer	Morane-Saulnier
First flight	1933
Retired	1934
Primary user	French Air Force (intended)
Number built	1

The Morane-Saulnier M.S.325 was a French Air Force fighter aircraft built by Morane-Saulnier in 1933 to meet the requirements of 1930 fighter aircraft specification. The design was unsuccessful and was abandoned in 1934.

Design and development

In 1930, when the Jockey legier Chasse, or Plan Caquot light weight fighter program was judged a failure, the Service Technique de l' Aeronautique issued the C1 (monoplace de chasse) requirement. C1 (upgraded on 26 January 1931) called for a single-seat fighter powered by a supercharged engine with a cylinder capacity of between 26 and 30 l (1,586.62 and 1,830.71 cu in). Ultimately no fewer than 10 designs and 12 prototypes were offered, all designed around the 26 l (1,586.62 cu in) Hispano-Suiza 12Xbrs developing 480 kW (650 hp) at 4,500 m (14,800 ft), with proven reliability and a relatively small frontal area. The Morane-Saulnier submissions included the M.S.275 which retained the classic parasol monoplane configuration of preceding Morane-Saulnier fighters. In the more innovative M.S.325, a low wing, duralumin-skinned all-metal configuration was employed.

The M.S.325 was relatively modest in its concept still featuring an open cockpit (originally the tail surfaces were fabric covered) and fixed-gear with the semi-elliptical two-spar wings braced by exterior struts. The wings had two jettisonable wing root fuel tanks with a pair of 7.7 mm (0.303 in) Châtellerault machine guns mounted one above each of the widely spaced landing gear legs. More unusual was that the incidence of the starboard wing greater than that of the port wing to counter torque; the engine was also canted slightly to port to counter the resultant yaw.^[1]

Operational history

M.S.325 C3 No. 01 (Works no. 4120) was flown for the first time by company Chief Test Pilot Michael Détroyat early in 1933 from the factory site, Vèlizy-Villacoublay. The first test results were not satisfactory as tail buffeting was encountered leading to modifications that included lowering the tailplane and adding wing root fairings.^[1]

Although testing proceeded, the M.S.325 continued to be hampered by handling problems. In measuring up to other C1 competitors, the M.S.325 was relegated to an "also-ran" status and the Dewoitine D.500 became the chosen design.

Development based around a Hispano-Suiza 12Xers engine with a 20 mm (0.787 in) cannon was proposed but eventually, the M.S.325 design was abandoned in favour of the more promising M.S.405 C.1 with only partial performance tests completed.

Specifications (M.S.325)

Data from Flying Review International^[1]

General characteristics

Crew: one pilot
Length: 8.25 m (27 ft 0.75 in)
Wingspan: 11.8 m (38 ft 8.5 in)
Height: 3.7 m (12 ft 1 ²⁄₃ in)
Wing area: 19.73 m² (212.37 ft²)
Empty weight: 1,354 kg (2,985 lb)
Loaded weight: 1,789 kg (3,944 lb)
Powerplant: 1 × Hispano-Suiza 12Xbrs liquid-cooled V-12, 484.71 kW (650 hp)

Performance

Maximum speed: 365 km/h (estimated) (227 mph) at 4,500 m (14,765 ft)
Service ceiling: 12,000 m (estimated) (39,370 ft)

Armament

Guns:
- 2× 7.7 mm (0.303 in) Châtellerault machine guns

References

Wikimedia Commons has media related to Morane-Saulnier.

Notes

1 2 3 Green 1968, p. 71.

Bibliography

Brindley, John. F. French Fighters of World War Two. Windsor, UK: Hylton Lacy Publishers Ltd., 1971. ISBN 0-85064-015-6.
Green, William. "Facts by Request." Flying Review International, Volume 24, no. 3, November 1968, p. 71.
Green, William. War Planes of the Second World War, Volume One: Fighters. London: Macdonald & Co.(Publishers) Ltd., 1960 (tenth impression 1972). ISBN 0-356-01445-2.
Pelletier, Alain. French Fighters of World War II. Carrollton, Texas: Squadron/Signal Publications, Inc., 2002. ISBN 0-89747-440-6.

Aircraft produced by Morane-Saulnier

Designation Letters	A B C F G GA GB H I L LA M N Nm O P S T TRK U V WR Y AC AE AF AFH AI AN/ANB/ANR/ANL/ANS AR AS BB BH

Numerical Sequence	MoS.1 MoS.2 MoS.3 MoS.4 MoS.5 MoS.6 MoS.7 MoS.8 MoS.9 MoS.10 MoS.13 MoS.21 MoS.22 MoS.23 MoS.25 MoS.26 MoS.27 MoS.28 MoS.29 MoS.30 MoS.31 MoS.32 MoS.33 MoS.34 MoS.35 MoS.42 MoS.43 MoS.50 MoS.51 MoS.53 MoS.121 MoS.129 MoS.130 MoS.131 MoS.132 MoS.133 MoS.134 MoS.136 MoS.137 MoS.138 MoS.139 MoS.140 MoS.141 MoS.147 MoS.148 MoS.149 MoS.152 MS.180 MS.181 MoS.185 MS.200 MS.221 MS.222 MS.223 MS.224 MS.225 MS.226 MS.227 MS.229 MS.230 MS.250 MS.251 MS.275 MS.278 MS.300 MS.301 MS.302 MS.315 MS.316 MS.317 MS.325 MS.340 MS.341 MS.342 MS.343 MS.345 MS.350 MS.405 MS.406 MS.408 MS.410 MS.411 MS.430 MS.433 MS.435 MS.450 MS.470 MS.472 MS.474 MS.470 MS.475 MS.476 MS.477 MS.479 MS.500 MS.501 MS.502 MS.504 MS.505 MS.506 MS.560 MS.570 MS.603 MS.700 MS.701 MS.703 MS.704 MS.730 MS.731 MS.732 MS.733 MS.755 MS.760 MS.880 MS.1500

Names & Nicknames	Alcyon Borel Bullet Criquet Epervier Fleuret Monococque Paris Pétrel Rallye Vanneau

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