page_title: Morane-Saulnier MoS-121
section_title: Specifications (MoS-121)
hierarchical_section_title: Morane-Saulnier MoS-121 / Specifications (MoS-121)
caption_attribution_description: English: Morane-Saulnier MS.121 3-view drawing from L'Aéronautique June,1928
context_page_description: The Morane-Saulnier MoS-121, also known as the Morane-Saulnier MS.121 was a French fighter prototype of the 1920s. It was Morane-Saulnier's first fighter design after World War I.
context_section_description: Data from Jane's all the World's Aircraft 1928, The Complete Book of Fighters
  General characteristics
  Crew: 1
  Length: 6.717 m (22 ft 0 in)
  Wingspan: 9.8 m (32 ft 2 in)
  Height: 2.885 m (9 ft 6 in)
  Wing area: 16 m² (170 sq ft)
  Empty weight: 990 kg (2,183 lb)
  Gross weight: 1,250 kg (2,756 lb)
  Powerplant: 1 × Hispano-Suiza 12Jb , 347 kW (465 hp)
  Propellers: 2-bladed wooden fixed pitch propeller
  Performance
  Maximum speed: 253 km/h (157 mph; 137 kn) at 1,000 m (3,300 ft)
  250 km/h (160 mph; 130 kn) at 2,500 m (8,200 ft)
  246 km/h (153 mph; 133 kn) at 3,500 m (11,500 ft)
  Endurance: 1.5 hours at full throttle
  Service ceiling: 8,700 m (28,500 ft)
  Time to altitude: 1,500 m (4,900 ft) in 3 minutes 44 seconds
  3,500 m (11,500 ft) in 9 minutes 19 seconds
  4,500 m (14,800 ft) in 13 minutes 11 seconds
  6,500 m (21,300 ft) in 25 minutes 25 seconds
  7,500 m (24,600 ft) in 36 minutes 5 seconds
  Wing loading: 78 kg/m² (16 lb/sq ft)
  Power/mass: 0.2694 kW/kg (0.1639 hp/lb)
  Armament
  Guns: 2x fixed forward firing 7.7 mm (0.303 in) Vickers machine-guns with 300 rpg
caption: Morane-Saulnier MS.121 3-view drawing from L'Aéronautique June,1928
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