Hall XP2H
The Hall XP2H-1 was an 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. The XP2H-1 was the largest four engine biplane aircraft ever procured by the US Navy.[1]
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, designated XP2H-1, was a four-engined biplane with an all-aluminum hull, scaled-up from the smaller PH flying boat, which accommodated a crew of six. The wings were of fabric-skinned aluminum construction and were of trapezoidal shape. The water-cooled V-12 Curtiss V-1570 Conqueror engines were mounted in tandem push-pull pairs between the wings, in nacelles attached to the lower wings.[2][3]
The XP2H-1 first flew on November 15, 1932, and was extensively tested, demonstrating excellent performance, being Template:Cvt faster than predicted.[4] It was possible to cruise on just two engines to extend range, and in 1935, the XP2H-1 was used to carry out a nonstop flight between Norfolk, Virginia and Coco Solo, Panama Canal Zone. The XP2H-1 took 25 hours and 15 minutes to fly the Template:Cvt distance between these two locations.[5] It was destroyed later in the year attempting to alight in open water.[6] No further P2Hs were built, with the US Navy equipping its patrol squadrons with smaller flying boats such as the Consolidated P2Y.
Operators
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Specifications
Data from General Dynamic Aircraft and their Predecessors [4]
General characteristics
- Crew: 6Template:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/convert
- Airfoil: root: Clark Y 10.7-15.99%; tip: Clark Y 11.7%[7]Template:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/engTemplate:Aircraft specs/engTemplate:Aircraft specs/engTemplate:Aircraft specs/lengthTemplate:Aircraft specs/convert
- Propellers: 3-bladed tractor and pusher propellersTemplate:Aircraft specs/length
PerformanceTemplate:Aircraft specs/speedTemplate:Aircraft specs/speedTemplate:Aircraft specs/speedTemplate:Aircraft specs/speedTemplate:Aircraft specs/speedTemplate:Aircraft specs/rangeTemplate:Aircraft specs/rangeTemplate:Aircraft specs/rangeTemplate:Aircraft specs/convertTemplate:Aircraft specs/convert
- Time to altitude: Template:Cvt in 8 minutes 42 secondsTemplate:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/convert
Armament
- Guns: 5x flexibly mounted Template:Cvt Browning machine guns in nose, dorsal waist and tail positions
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See also
Related development
Aircraft of comparable role, configuration, and era
References
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- "For Long Range Patrol". Flight, 24 January 1935. p. 94.
- "A Long Distance Flight" Flight, 21 February 1935, p. 195.
- Boyne, Walter J. "The Flying Hallmarks: The Hall Aluminium Classics". The Best of Wings Magazine. Washington, DC:Brasseys, 2001. Template:ISBN. pp. 52–61.
- Loftin, Laurence K. Quest for Performance:The Evolution of Modern Aircraft Script error: No such module "webarchive".,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. Template:ISBN.
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