Curtiss P-36

Curtiss P-36
Alan Wilson from Stilton, Peterborough, Cambs, UK · CC BY-SA 2.0 · source
Name	Curtiss P-36 Hawk
Type	Fighter aircraft
Manufacturer	Curtiss-Wright
First flight	1935
Introduced	1938
Retired	1954
Primary user	United States Army Air Corps
Produced	~1,000
Number built	~1,000

Curtiss P-36 The Curtiss P-36 Hawk was an American single-engine, low-wing monoplane fighter developed in the mid-1930s by Curtiss-Wright and flown by the United States Army Air Corps, French Armée de l'Air, and Royal Air Force among others. Designed during an era of rapid aeronautical innovation alongside contemporaries such as the Hawker Hurricane, Supermarine Spitfire, Messerschmitt Bf 109, and Polikarpov I-16, the Hawk served as a transitional platform that influenced later types like the Curtiss P-40 Warhawk. Its mixed success in combat echoed engagements in theaters including the Battle of France, the Defense of the Philippines, and the Winter War.

Design and Development

Curtiss began development in response to United States Army Air Corps Request for Information programs and international interest during the interwar period, competing with firms such as Boeing, Northrop Corporation, Grumman, and Lockheed. The P-36 emerged from experiments with retractable undercarriage, enclosed cockpits, and NACA cowling developments pioneered by National Advisory Committee for Aeronautics, reflecting aerodynamic trends seen in Hawker and Supermarine designs. Early prototypes flew with radial engines influenced by Pratt & Whitney and Wright Aeronautical powerplants; production evaluations involved Mitchell Field demonstrations and export trials to the Soviet Union, France, and China. Political procurement debates in the United States Congress and procurement offices of the Department of War (United States) shaped production runs and license arrangements.

Technical Description

The airframe combined an all-metal semi-monocoque fuselage with fabric-covered control surfaces, featuring a NACA-style radial engine installation, a two-blade or three-blade variable-pitch propeller from firms like Hamilton Standard, and hydraulically retractable landing gear with trailing-link shock absorbers. Armament configurations varied and included synchronized fuselage-mounted .30 caliber and .50 caliber machine guns produced by Browning, and provisions for wing-mounted guns or light bombs compatible with attachments used by RAF fighters. Avionics packages evolved from basic Westinghouse and Standard Radio Corporation radio sets to upgraded instruments for night and instrument flying modeled after systems used aboard Douglas and Consolidated types. Cooling, weight distribution, and center-of-gravity considerations paralleled practices at Lockheed Vega and Republic Aviation during the same period.

Operational History

Introduced into United States Army Air Corps service in the late 1930s, the Hawk equipped pursuit groups that trained at bases such as Selfridge Field and Langley Field, later being supplanted by P-40s and more advanced fighters before the outbreak of World War II. Exported Hawks saw combat with the French Armée de l'Air during the Battle of France and with Royal Air Force units re-equipped from captured stocks; Hawks also appeared in the Battle of the Philippines defending against Imperial Japanese Navy Air Service raids and in skirmishes over China against Imperial Japanese Army Air Service units. In some theaters Hawks were flown by volunteer and foreign squadrons connected to organizations such as the Eagle Squadrons and auxiliary groups influenced by Claire Chennault's tactics. Performance limitations against Messerschmitt Bf 109 and Mitsubishi A6M Zero fighters led to tactical shifts emphasizing altitude, diving attacks, and combined-arms support pioneered in doctrines by figures like Billy Mitchell and later refined during Operation Torch.

Variants

The Hawk family spawned numerous variants reflecting engine and armament experiments, including export and prototype versions with different Pratt & Whitney and Wright R-1820 Cyclone engines, altered cowling, and revised tailplanes. Notable derivative projects included those leading to the Curtiss P-40 lineage, and models submitted to foreign procurement boards in France, Belgium, and Finland. Prototype designations, company internal codes, and military serial variants were documented alongside license-production discussions with firms such as Savoia-Marchetti and technicians from Sopwith-era workshops involved in European evaluations.

Operators

Primary operators included the United States Army Air Corps, French Armée de l'Air, and Royal Air Force (including units in the Royal Canadian Air Force and Royal Australian Air Force through lend-lease and emergency transfers). Other operators and users encompassed air arms from China, Belgium, Finland, and colonies and dominions such as Philippines units and local defense organizations that procured or inherited aircraft during World War II mobilizations. Aircraft also appeared in evaluation or limited service with various export customers negotiating through diplomatic channels involving the U.S. State Department.

Surviving Aircraft and Museums

A number of Hawks survive in museums and private collections, displayed alongside contemporaries like the Hawker Hurricane and Supermarine Spitfire in institutions such as the National Air and Space Museum, the Smithsonian Institution, and aviation museums in France and Finland. Restored examples are exhibited at veteran airshows, aircraft preservation events coordinated by organizations akin to the Commemorative Air Force and restoration groups connected to Vintage Wings of Canada and the Experimental Aircraft Association. Static airframes and reproductions are held by regional museums that interpret interwar and early World War II aviation history.

Category:Curtiss aircraft