Besson H-5

Besson H-5
Besson H-5 circa 1922
General information
TypeTransport flying-boat
National originFrance
ManufacturerMarcel Besson
Number built1
History
First flight1922

The Besson H-5 (or sometimes Besson MB-11) was a French transport quadruplane flying boat designed by the Marcel Besson company of Boulogne.[1] The only H-5 was damaged and development was abandoned.[1]

Development

The HB.5 (MB-10) originally started development as an open-sea reconnaissance/bombing flying-boat, but it was completed as a 20-seat passenger transport flying-boat.[1] Described as grotesque it had two sets of staggered biplane wings with an unusual X-type bracing and a biplane tail with triple fins and rudders.[1] Powered by four Salmson 9Z radial engines that were located in tandem pairs in line with the third mainplane.[2] The H-5 had a conventional fuselage on a three-ply mahogany boat hull, which had 24 watertight compartments.[2]

The H-5 was tested from the St Raphael naval air station in 1922 and proved to be stable with little vibration.[1] After a few test flights the H-5 was accidentally damaged and development was abandoned.[1]

Staggered wing detail

Specifications

Data from The Illustrated Encyclopedia of Aircraft,[1] Jane's all the World's Aircraft 1924[3]

General characteristics

  • Crew: 5
  • Capacity: 20 passengers
  • Length: 22.0 m (72 ft 2 in)
  • Wingspan: 29.00 m (95 ft 2 in)
  • Height: 6.5 m (21 ft 4 in)
  • Wing area: 255 m2 (2,740 sq ft)
  • Empty weight: 5,500 kg (12,125 lb)
  • Max takeoff weight: 10,000 kg (22,046 lb)
  • Fuel capacity: 1,800 L (480 US gal; 400 imp gal)
  • Powerplant: 4 × Salmson 9Z water-cooled radial piston engine, 190 kW (260 hp) each
  • Propellers: 2-bladed fixed-pitch tractor and pusher propellers

Performance

  • Maximum speed: 168 km/h (104 mph, 91 kn)
  • Range: 900 km (560 mi, 490 nmi)
  • Service ceiling: 3,500 m (11,500 ft)

See also

Related lists

References

  1. ^ a b c d e f g The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing. p. 655.
  2. ^ a b "The Marcel Besson H-5 Quadruplane Flying Boat". Flight. 15 February 1923. p. 89.
  3. ^ Grey, C.G., ed. (1924). Jane's all the World's Aircraft 1924. London: Sampson Low, Marston & company, ltd. p. 93b.

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