Curtiss P-3 Hawk


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Curtiss P-3 Hawk

The first radial-engined Hawk resulted from the mating of a P-1A airframe with a 390hp Curtiss R-1454 engine as the XP-3 in October 1926. The failure of the Curtiss engine led to its substitution by a 410hp Pratt & Whitney R-1340-9, with which it was tested in April 1928 as the XP-3A. Five production examples had been ordered in December 1927 as P-3As, deliveries commencing in September 1928. The P-3A was powered by the R-1340-3 version of the Wasp, also rated at 410hp, and the first production example was flown with various experimental cowlings as the second XP-3A. Both this and the original XP-3A were eventually to become XP-21s, the second XP-3A undergoing further conversion (after testing as an XP-21) to P-1F standards. Armament of the P-3A comprised two 7.62mm machine guns and this type was fitted with a Townend ring after service entry.

  Take-off weight1265 kg2789 lb
  Empty weight887 kg1956 lb
  Wingspan9.63 m32 ft 7 in
  Length6.83 m22 ft 5 in
  Height2.67 m9 ft 9 in
  Wing area23.41 m2251.98 sq ft
  Max. speed246 km/h153 mph

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