Breguet Nautilus

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790 Nautilus
Role Coastal patrol flying-boat
National origin France
Manufacturer Breguet Aviation
First flight 1939
Number built 2

The Breguet 790 Nautilus was a prototype French three-seat coastal patrol flying-boat designed and built by Breguet Aviation to meet a requirement from the French navy.[1]

Development[edit]

The Nautilus had a high-set monoplane wing on a single-step hull, the wing was fabric covered and the hull all-metal.[1] The aircraft was powered by a 720 hp (537 kW) Hispano-Suiza 12Xirs V-12 piston engine strut mounted above the hull driving a pusher propeller.[1]

The first of two prototypes flew in 1939 and performed well enough that a production order for 75 was placed.[1] The order was reduced to 45 in May 1940 in order to free production capacity for more urgently needed combat aircraft, but none were built following the German invasion.[1][2]

Variants[edit]

Breguet 790
Basic three-seat coastal reconnaissance aircraft, powered by 540 kW (720 hp) Hispano-Suiza 12Xirs engine. Two prototypes built.[3]
Breguet 791
Proposed version powered by single 490 kW (660 hp) Gnome-Rhône 14M radial engine. Unbuilt.[2]
Breguet 792
Proposed version for ship-based reconnaissance aircraft, powered by two 270 kW (360 hp) Béarn 6 air cooled inline engines. Unbuilt.[2]

Specifications[edit]

Data from [1]

General characteristics

  • Crew: 3
  • Length: 13.00 m (42 ft 8 in)
  • Wingspan: 17.00 m (55 ft 9 in)
  • Height: 4.00 m (13 ft 1 in)
  • Wing area: 33.00 m2 (355.2 sq ft)
  • Empty weight: 2,700 kg (5,952 lb)
  • Max takeoff weight: 3,600 kg (7,937 lb)
  • Powerplant: 1 × Hispano-Suiza 12Xirs inline piston engine, 540 kW (720 hp)
  • Propellers: 3-bladed

Performance

  • Maximum speed: 310 km/h (193 mph; 167 kn)
  • Cruising speed: 150 km/h (93 mph; 81 kn)
  • Range: 900 km (559 mi; 486 nmi)
  • Service ceiling: 6,000 m (19,685 ft)

See also[edit]

Related lists

References[edit]

Notes
  1. ^ a b c d e f Orbis 1985, p. 879
  2. ^ a b c Green 1968, p.14.
  3. ^ Green 1968, pp. 13–14.
Bibliography