Boeing XPB
| XPB | |
|---|---|
| |
| Role | Patrol flying boat |
| National origin | United States |
| Manufacturer | Boeing |
| First flight | 1925 |
| Primary user | United States Navy |
| Number built | 1 |
The Boeing XPB (company Model 50) was an American twin-engined biplane long-range patrol flying boat of the 1920s. A single example was built for the United States Navy.
Design and development
In September 1924, the
two-bay biplane of very streamlined design for flying boats of the time. The wings were of metal construction, with wooden wingtips and leading edges. The fuselage had a metal lower part, with the upper half made of laminated wooden frames with a wood veneer covering. Two 800 hp (600 kW) Packard 2A-2500 V12 engines driving four-bladed propellers were mounted in tandem between the wings above the fuselage.[1]
Operational history
The Boeing Model 50, designated XPB-1 by the US Navy, made its maiden flight in August 1925.Pratt & Whitney R-1690 Hornet radial engines, leading to the new designation XPB-2.
Specifications (XPB-1)
Data from Boeing Aircraft since 1916[5]
General characteristics
- Crew: 5
- Length: 59 ft 4.5 in (18.098 m)
- Wingspan: 87 ft 6 in (26.67 m)
- Height: 20 ft 10 in (6.35 m)
- Wing area: 1,801 sq ft (167.3 m2)
- Airfoil: Clark Y[1]
- Empty weight: 11,551 lb (5,239 kg)
- Gross weight: 26,882 lb (12,193 kg)
- Powerplant: 2 × Packard 2A-2500 liquid-cooled V12 engine, 800 hp (600 kW) each
Performance
- Maximum speed: 97 kn (112 mph, 180 km/h)
- Cruise speed: 82 kn (94 mph, 151 km/h)
- Range: 2,200 nmi (2,500 mi, 4,000 km)
- Service ceiling: 9,000 ft (2,700 m)
- Rate of climb: 4,000 ft/min (20 m/s)
Armament
- Guns: 3× .30 in machine guns
- Bombs: 4,000 lb (1,800 kg)
See also
Related lists
References
Wikimedia Commons has media related to Boeing XPB (Flying boat).
- Notes
- ^ a b Bowers 1989, p. 73.
- ^ Yenne 2005, p. 15.
- ^ "Boeing C to Z, and hyphenates". Aerofiles. Retrieved 18 June 2010.
- ^ "San Francisco-Honolulu Flight Fails". Flight, 10 September 1925, p. 579.
- ^ Bowers 1989, p. 75.
- Bibliography
- Bowers, Peter M. Boeing Aircraft since 1916. London:Putnam, 1989. ISBN 0-85177-804-6.
- Yenne, Bill. The Story of the Boeing Company. St Paul, USA: Zenith Imprint, 2005. ISBN 0-7603-2333-X.