Curtiss Hawk 75


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Curtiss Hawk 75

Soon after receiving an order from the USAAC for an evaluation quantity of its Model 75 fighter, Curtiss began to consider the export potential of the basic design as a successor to the Hawk III biplane. A simplified version with a fixed cantilever undercarriage was evolved for which the export appellation "Hawk" was retained and to which the model number "75" was appended. Two demonstration examples of the Hawk 75 were built in parallel with the three Y1P-36s ordered by the USAAC, these being powered by the 875hp Wright Cyclone GR-1820-G3 Cyclone nine-cylinder radial. One mounted an armament of one 12.7mm and one 7.62mm gun in the nose, and the other having this armament supplemented with a pair of wing-mounted 7.62mm weapons. The two demonstration aircraft were assigned the designation Hawk 75-H (Curtiss having adopted the practice of allocating suffix letters to each version of the basic design, the Y1P-36, for example, being the 75-E, the XP-37 being the 75-1, etc), the two-gun example being lost and the four-gun aircraft being sold to China. The latter country was the first quantity purchaser of the fixed undercarriage Hawk 75, a total of 30 being delivered under the designation Hawk 75-M between May and August 1938. A further 82 were to have been assembled by CAMCO (Central Aircraft Manufacturing Company) at Loi-wing, but these were cancelled in favour of assembly of the more advanced Hawk 75A-5. The delivery followed from November 1938 of 29 aircraft to Argentina under the designation Hawk 75-0, these having an armament of four 7.62mm guns, and a further 20 examples were licence-built by the FMA. Delivered simultaneously to Thailand were 12 Hawk 75-Ns, these having two fuselage-mounted 7.62mm guns and two underwing 23mm Madsen cannon. The characteristics of all versions of the fixed-undercarriage Hawk 75 were essentially similar.

Curtiss Hawk 75A three-view drawing (1280 x 972)

 MODELHawk 75-0
  Take-off weight2346 kg5172 lb
  Empty weight1803 kg3975 lb
  Wingspan11.38 m37 ft 4 in
  Length8.71 m29 ft 7 in
  Height2.84 m9 ft 4 in
  Wing area21.92 m2235.94 sq ft
  Max. speed451 km/h280 mph
  Range880 km547 miles

Greg Otterson, e-mail, 14.10.2016 06:40

Brad is correct. The only one is in Bangkok, where I live most of the time. I have current photos of it if there is a way to post them here. Please advise via my email as I would be happy to post them. I also have photos of the only Hawk III, also in Bangkok. Both are in what appears to be original condition. While they are now inside, both were outside for years and have expected wear for the tropical heat and humidity including some corrosion. Both also have documented combat history.


Terry Kruse, e-mail, 28.06.2014 00:22

Can anyone tell me what P-36 was used by the 21st pursuit squadron in the battle for Bataan.


Klaatu83, e-mail, 27.07.2012 02:29

"Hawk 75" was the manufacturers's designation for the fighter which the Army Air Corps called the P-36. That designation also included all the export versions, not just the fixed landing gear version (of which few were actually built.) The term Hawk 75 included those built under the largest export order, which was for the French Air Force. After the Fall of France many of the undelivered French Hawk 75s ended up in the RAF, under the British designation, "Mohawk".


Brad Hensley, e-mail, 25.03.2011 03:27

The only fixed gear Hawk 75 known to exist is the Hawk 75N in the Royal Thai Air Force Museum in Bangkok. It is in excellent condition considering it's age.
There was never a fixed gear P-36. That is the US Army designation. The Hawk 75 is the factory designation used mainly for export.
There is a retractable gear Hawk 75A flying in Europe.


Emerson Watson, e-mail, 22.09.2010 15:48

Wright Aero. had a Hawk 75 and used it for product improvement testing including flame supression.


Bob Tufo, e-mail, 25.07.2010 02:18

I had no idea that a fixed gear P-36 existed until I saw a photo of one in Chinee service with a caption stating that Chenault flew it and scored some victories against the Japanese.
I have always admired the P-36 and wish I could have flown it.


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