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Stearman XA-21

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XA-21
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 Stearman Model X-100 was a competitor in an United States Army Air Corps competition for a twin-engined attack aircraft which (after redesigns) led to the Douglas A-20 Havoc, Martin A-22 Maryland and North American B-25 Mitchell.

Design and development

The X-100, designated XA-21 following purchase by the Army Air Corps, was a twin-engined high-winged monoplane of all-metal construction. [1]It featured an unusual cockpit arrangement, much like those on most German World War II bombers designed during the war years, with a streamlined greenhouse canopy enclosing both the pilot and bombardier stations.[2]

Operational history

The XA-21 was first tested with the streamlined cockpit but this configuration was found to restrict the pilot's forward vision, and the aircraft was rebuilt with a conventional (stepped) nose and cockpit structure. [3]Although this change in the cockpit did not significantly affect performance, the XA-21 was not ordered into production.'[4]

The sole XA-21 had serial number 40-191.

Operators

23x15px United States

Specifications (XA-21)

Data from Museum of the United States Air Force[4]

General characteristics

Performance

  • Guns:
    • 4× wing-mounted 0.30 in (7.62 mm) M1919 Browning machine guns
    • 1× nose-mounted 0.30 in machine gun
    • 4× aft-firing 0.30 in machine guns
  • Bombs: 2,700 lb (1,200 kg)
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See also

Related lists

References

Notes
  1. ^ "Stearman XA-21 (Stepped Cockpit)." Museum of the United States Air Force. Retrieved: 16 February 2011.
  2. ^ Bowers 1989, p. 273.
  3. ^ "Swift Attack Bombers Race For Jobs In Army Air Corps." Popular Mechanics, June 1939.
  4. ^ a b "Stearman XA-21 (Streamlined Cockpit)." Museum of the United States Air Force. Retrieved: 16 February 2011.
Bibliography
  • Bowers, Peter M. Boeing Aircraft since 1916. London: Putnam, Second edition, 1989. ISBN 0-85177-804-6.
  • Wagner, Ray. American Combat Planes of the 20th Century, Third Enlarged Edition. New York: Doubleday, 1982. ISBN 978-0-930083-17-5.
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External links