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Boeing XP-15

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XP-15 / XF5B
Role

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Manufacturer

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First flight

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Status

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Primary user

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Number built

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The Boeing XP-15 was a prototype monoplane fighter of the United States, the second to be designated a pursuit type, after the Boeing XP-9.

Design and development

This aircraft was essentially a monoplane version of the Boeing P-12, differing in having the lower wing omitted and in having all-metal construction as well as altered ailerons. The XP-15 had a split-axle undercarriage and a tail wheel.[1]

Boeing numbered the craft as its Model 202; while the United States Army accepted it for testing and designated it as XP-15, they never actually purchased it, and it retained its civil registration of X-270V.[1]

Operational history

The XP-15 first flew in January 1930, when it was discovered that the vertical stabilizer (a P-12C type) needed to be larger in order to compensate for the single wing. Initial testing showed a top speed to 178 mph, but with enlarged tail surfaces and a Townend cowling, it recorded 190 mph at 8,000 ft. The aircraft performed poorly, with a poor rate of climb and a high landing speed. The USAAC did not order the aircraft for production and on 7 February 1931, the prototype was destroyed when a propeller blade failed and the engine tore loose from its mounts.[1]

The Navy was offered the similar Model 205. It first flew in February 1930. It was ordered by the US Navy, but by the time flight testing was complete in 1932, other aircraft were ordered instead. It was however, the first US designed monoplane to receive a US Navy designation, XF5B-1,[1] following the German designed Wright WP-1 of 1923.

Operators

23x15px United States

Specifications (XP-15)

Data from Angelucci 1987, pp. 81–82.[1]

General characteristics
  • Crew: one
  • Length: 21 ft 0 in (6.40 m)
  • Wingspan: 30 ft 6 in (9.29 m)
  • Height: 9 ft 4.5 in (2.84 m)
  • Wing area: 157.3 ft2 (14.61 m2)
  • Empty weight: 2,052 lb (931 kg)
  • Gross weight: 2,746 lb (1,246 kg)
  • Powerplant: 1 × Pratt & Whitney SR-1340D, 525 hp ( kW)

Performance

  • Maximum speed: 190.2 mph (306 km/h)
  • Cruise speed: 160 mph (257 km/h)
  • Range: 420 miles (676 km)
  • Service ceiling: 27,650 ft (8,428 m)
  • Rate of climb: 1800 ft/min (9.15 m/s)</ul>Armament
  • 2x .30inch machine guns

See also

Related lists

References

Notes
  1. ^ a b c d e f Angelucci 1987, pp. 81-82.
Bibliography
  • Angelucci, Enzo. The American Fighter from 1917 to the present. New York: Orion Books, 1987.
  • Jones, Lloyd S. U.S. Fighters, Army-Air Force: 1925 to 1980s. Fallbrook, California: Aero Publishers Incorporated, 1975, pp. 48–49. ISBN 0-8168-9200-8.
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External links