page_title: Besson MB.35
section_title: Specification (MB.35)
hierarchical_section_title: Besson MB.35 / Specification (MB.35)
caption_attribution_description: English: Besson MB.35 3-view drawing from L'Air December 1,1926
context_page_description: The Besson MB.35 Passe Partout was a French two-seat spotter and observation floatplane, designed by Besson. It was intended to serve on Surcouf a very large submarine, stowed in a sealed hangar. The first aircraft was destroyed during trials and the second was converted to the MB.41, prototype of the Besson MB.411, which did serve on Surcouf.
context_section_description: Data from Jane's all the World's Aircraft 1928, Biplanes, Triplanes, and Seaplanes, Submarines with wings : the past, present and future of aircraft-carrying submarines
  General characteristics
  Crew: 2
  Length: 7.3 m (23 ft 11 in) wings spread
  Wingspan: 9.85 m (32 ft 4 in) wings spread
  Width: 2.2 m (7 ft 3 in) wings folded for submarine stowage
  Length folded: 6.5 m (21 ft)
  Height: 2.53 m (8 ft 4 in)
  Wing area: 16.5 m² (178 sq ft)
  Empty weight: 540 kg (1,190 lb)
  Gross weight: 765 kg (1,687 lb)
  Powerplant: 1 × Salmson 9AC 9-cylinder air-cooled radial piston engine, 89 kW (120 hp)
  Propellers: 2-bladed fixed pitch propeller
  Performance
  Maximum speed: 160 km/h (99 mph; 86 kn)
  Range: 346 km (215 mi; 187 nmi)
  Ferry range: 644 km (400 mi; 348 nmi) with overload tank in rear cockpit
  Service ceiling: 4,800 m (15,700 ft)
  Wing loading: 47.5 kg/m² (9.7 lb/sq ft)
  Power/mass: 0.1174 kW/kg (.0714 hp/lb)
caption: Besson MB.35 3-view drawing from L'Air December 1,1926
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