page_title: Curtiss P-6 Hawk
section_title: Variants
hierarchical_section_title: Curtiss P-6 Hawk / Variants
caption_attribution_description: PictionID:41898904 - Title:Ray Wagner Collection Image - Catalog:16_000753 Curtiss P-6S -Cuban Hawk- 1930 - Filename:16_000753 Curtiss P-6S -Cuban Hawk- 1930.tif - - - Ray Wagner was Archivist at the San Diego Air and Space Museum for several years and is an author of several books on aviation --- ---Please Tag these images so that the information can be permanently stored with the digital file.---Repository: San Diego Air and Space Museum
context_page_description: The Curtiss P-6 Hawk is an American single-engine biplane fighter introduced into service in the late 1920s with the United States Army Air Corps and operated until the late 1930s prior to the outbreak of World War II.
context_section_description: XP-6
  Model 34P, modified from a P-1 with a Curtiss V-1570-17 Conqueror engine
  XP-6A
  Model 34K, same as XP-6 but with untapered wings and wing radiators to reduce drag
  P-6A
  18 ordered by the U.S. Army, nine were fitted with Prestone- rather than water-cooled V-1570 engines
  XP-6B
  P-1 converted to take the V-1670 engine
  P-6C
  cancelled
  XP-6D
  XP-6B converted to take a turbocharged V-1570-C
  P-6D
  P-6As, (six of the seven surviving), re-engined in 1932 with turbocharged V-1570-C installed in 1932
  XP-6E
  Model 35, also designated Y1P-22, ordered in July 1931 as P-6E prototype
  P-6E
  46 delivered in 1931–1932, equipped the 17th and 33rd Pursuit Squadrons
  XP-6F
  Modified XP-6E with a supercharger and an enclosed cockpit
  XP-6G
  P-6E with a V-1570F
  XP-6H
  P-6E with 4 × .30 in (7.62 mm) machine guns mounted in the wings
  P-6S
  Hawk I, three sold to Cuba with the 450 hp (336 kW) Pratt & Whitney R-1340 Wasp radial, and one sold to Japan as the Japan Hawk with the V-1570 inverted Vee piston engine
  P-11
  Three ordered with the Curtiss H-1640 Chieftain engine of 600 hp (447 kW), two were completed with the V-1570 and redesignated P-6D
  XP-17
  P-1 used as a testbed for the experimental Wright V-1470 air-cooled inverted vee
  YP-20
  P-11 converted with a Wright Cyclone radial
  XP-21
  Two conversions of the XP-3A used to test the 300 hp (224 kW) Pratt & Whitney R-985 Wasp Junior radial, one became the XP-21A when modified with the R-975, and the other was converted to the P-1F standard
  XP-22
  Temporary designation for a P-6A used to test new radiator installations for the V-1570-23 and converted back to a P-6A
  XP-23
  Model 63, unfinished P-6E with light alloy monocoque fuselage, improved tail, and a turbocharged G1V-1570C with a geared propeller and the turbocharger removed. Later redesignated YP-23
caption: Curtiss P-6S Cuban Hawk
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