From Wikipedia, the free encyclopedia
The Hall XP2H-1 was a American prototype four-engined biplane flying boat of the 1930s. Intended as an
experimental very long range maritime patrol aircraft, a single
example was built.
Development and design
In 1930, the United States Navy ordered a single
example of a large flying boat from the Hall-Aluminum Aircraft
Corporation, to meet a requirement for an experimental very-long
range patrol aircraft. The resulting design was designated
XP2H-1 and was a four engined biplane. It had an all-aluminium hull, a scaled
up version of that used in Hall's smaller PH flying boat, which accommodated a crew of
six. The wings were of fabric skinned aluminium construction and
were of trapezoidal
shape. The engines, Curtiss V-1570 Conquerors were mounted
in tandem push-pull pairs between the wings.
The XP2H-1 first flew on November 15, 1932, and was extensively
tested, demonstrating excellent performance, being 11 mph
(18 km/h) faster than predicted.
It was possible to cruise on just two engines to extend range, and
in 1935, the XP2H-1 was used to carry out a non-stop flight between
Norfolk, Virginia and Coco Solo, Panama Canal Zone in 1935, taking 25
hours and 15 minutes to fly the 2,000 miles
It was destroyed later in the year attempting a landing in open
No further P2Hs were built, with the US Navy equipping its patrol
squadrons with smaller flying boats such as the Consolidated
- United States
from General Dynamic Aircraft and their Predecessors 
- Crew: 6
- Length: 64 ft 6½ in (19.68 m)
- Wingspan: 112 ft 0 in (34.15 m)
- Height: 25 ft 6 in (7.77 m)
- Wing area: 2,742 ft² (254.8 m²)
- Empty weight: 20,856 lb (9,840 kg)
- Loaded weight: 35,393 lb (16,087 kg)
- Max takeoff weight:
43,193 lb (19,633 kg)
- Powerplant: 4× Curtiss V-1570-54 Conqueror V-12 water cooled, 600 hp
(448 kW) each
speed: 121 knots (225 km/h, 139.6 mph) at sea
speed: 104 knots (193 km/h, 120 mph)
- Range: 1,870 nmi (3,462 km,
- Ferry range: 2,913 nmi (5,394 km,
3,350 mi) (maximum range)
- Service ceiling: 10,900
ft (3,320 m)
- Climb to 5,000 ft (1,525 m): 8.7 min
- Guns: Five flexibly mounted 0.3 in Browning
machine guns in nose, dorsal waist and tail positions
- Bombs: 2,000 lb (909 kg) bombs
- "For Long Range Patrol".
Flight, 24 January 1925.
- "A Long Distance Flight"
Flight, 21 February 1925, p.195.
- Boyne, Walter J. "The Flying Hallmarks: The
Hall Aluminium Classics". The Best of Wings Magazine.
Washington, DC:Brasseys, 2001. ISBN 9781574883688. pp.52-61.
- Loftin, Laurence K. Quest for Performance:The
Evolution of Modern Aircraft,SP-468. Washington, DC:
National Aeronautics and Space Administration, History Office,
Scientific and Technical Information Branch, 1985.
- Wegg, John. General Dynamic Aircraft and their
Predecessors. London:Putnam, 1990. ISBN 0-85177-833-X.
|Aircraft produced by Charles Ward Hall and
Hall-Aluminum Aircraft Corporation
Air Yacht • XFH-1 • PH • XP2H-1 • Monoped • XPTBH-2