Curtiss Model 75

1935

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Curtiss Model 75

Designed by Donovan R Berlin to participate in a USAAC fighter contest scheduled to take place on 27 May 1935, the Model 75 (the retroactive assignment of Model numbers to earlier designs was attempted at this time and the new fighter became the first design to receive a Curtiss Model designation from the outset) all-metal single-seat fighter was initiated in October 1934, flying on 15 May 1935. Featuring a monocoque fuselage and a multi-spar wing, the Model 75 was powered by a 900hp Wright XR-1670-514-cylinder tworow radial. Proposed aimament comprised one 12.7mm and one 7.62mm machine gun. The unsatisfactory behaviour of the Wright engine resulted in its replacement by a 700hp Pratt & Whitney R-1535 Twin Wasp Junior. This, too, proved troublesome and was succeeded by a 950hp Wright XR-1820-39 (G5) Cyclone nine-cylinder radial with which the prototype became the Model 75B. During USAAC trials, the Model 75B took second place to the Seversky SEV-1XP, which was to enter production as the P-35.

Curtiss Model 75

Specification 
 MODELModel 75B
 WEIGHTS
  Take-off weight2302 kg5075 lb
  Empty weight1837 kg4050 lb
 DIMENSIONS
  Wingspan11.37 m37 ft 4 in
  Length8.56 m28 ft 1 in
  Height2.74 m9 ft 0 in
  Wing area21.55 m2231.96 sq ft
 PERFORMANCE
  Max. speed459 km/h285 mph
  Range1175 km730 miles

Comments
Klaatu83, e-mail, 11.10.2011 03:18

"Hawk-75" was the company company name for the fighter that the Army Air Corps referred to as the "P-36". There were many different versions of the "Hawk-75" sold for export. The RAF called their version of this fighter the "Mohawk". Aircraft "X17Y, pictured above, was actually the first prototype, shown in original version (top), and later, (below), fitted with a different engine and a scalloped indentation behind the cockpit to improve rear visibility.

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