Saunders-Roe Princess - Specifications

Specifications

Data from British Flying Boats and Flight 1952

General characteristics

• Crew: 2 pilots, 2 flight engineers, radio operator and navigator
• Capacity: 105 passengers in tourist and first class cabins
• Length: 148 ft (42.1 m)
• Wingspan: 219 ft 6 in (66.9 m)
• Height: 55 ft 9 in (17 m)
• Wing area: 5,019 sq ft (466 m²)
• Airfoil: "Saro-modified Goldstein section" to "modified N.A.C.A. 4415 Series" at tip
• Empty weight: 190,000 lb (86,184 kg)
• Loaded weight: 330,000 lb (150,000 kg)
• Max. takeoff weight: 345,025 lb (156,500 kg)
• Powerplant: 10 × Bristol Proteus 600/610 turboprop, 2,500 shp (2,386 kW) plus 820 lbf (3.66 kN) jet thrust each
• Propellers: 4 bladed De Havilland constant-speed, quick-feathering propellers, 1 (inner pairs contrarotating on common axis) per engine
  • Propeller diameter: 16 ft 6 in (5.03 m)
• Fuel capacity: 14,000 Imperial gallons in inner wings

Performance

• Maximum speed: 330 knots (380 mph (610 km/h)) at 37,000 ft (11,300 m)
• Cruise speed: 313 knots (360 mph, 580 km/h) at 32500 ft (9,900 m)
• Stall speed: 98 knots (113 mph, 182 km/h) Flaps down
• Range: 5,720 miles (4,974 NM, 9,205 km)
• Service ceiling: 39,000 ft (11,887 m) Absolute ceiling
• Rate of climb: 1,900 ft/min (579 m/min) at sea level