Curtiss-Wright CW-21
| CW-21 | |
|---|---|
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| CW-21 B Demon, Netherlands East Indies Army Air Corps | |
| Role | Fighter |
| Manufacturer | Curtiss-Wright Corporation |
| First flight | 22 September 1938 |
| Introduction | 1939 |
| Primary users |
Chinese Nationalist Air Force Royal Netherlands East Indies Army Air Force |
| Produced | 1939–1940 |
| Number built | 62 |
| Developed from | Model 19 |
The Curtiss-Wright Model 21 (also known as the Curtiss-Wright Model 21 Demonstrator, the Curtiss-Wright CW-21 Interceptor, the Curtiss-Wright CW-21 Demon) was a United States-built fighter interceptor, developed by the St. Louis Airplane Division of Curtiss-Wright Corporation during the 1930s.
In 1938, George A. Page, head of the Saint Louis Airplane Division of Curtiss-Wright, decided to develop a fighter aircraft based on Carl W. Scott's two seater Model 19. Page's concept was a lightweight fighter interceptor with as high a rate of climb as possible in order to allow bomber formations to be attacked with minimal warning. If faced with fighter opposition, it was intended not to dogfight, but to use its superior climb rate to escape. While this was a direct contradiction to the United States Army Air Corps′ requirements for fighters (which stressed low-level performance), this did not concern Page, since the new fighter was intended for export.
Detailed design of the new fighter, the Model 21, or CW-21, was carried out by a team led by chief engineer Willis Wells. It was a single-seat, all-metal cantilever low-wing monoplane with retractable tailwheel landing gear, where the mainwheels retracted rearwards into fairings under the wing. The fuselage was a semi-monocoque structure that tapered sharply behind the pilot's cockpit. It was powered by a 1,000 hp (750 kW) Wright R-1820-G5 nine-cylinder air-cooled radial engine. It was designed to carry various combinations of two .30 in (7.62 mm) or .50 in (12.7 mm) machine guns, mounted in the nose and synchronized to fire through the propeller, while no armor or fuel tank protection was fitted in order to save weight and hence improve performance.
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