Hall Bulldog
In the mid-1930s, American engineer Robert L. Hall founded Springfield Aircraft Inc. in Springfield, Massachusetts. In 1932, the company built a light aircraft named the Hall Bulldog, often also referred to as the Hall-Springfield Bulldog.
Design and Specifications
It was a single-seat, strut-braced high-wing monoplane with a gull wing, powered by a 550 hp Pratt & Whitney R-985 Wasp Junior nine-cylinder air-cooled radial engine. It was fitted with a Hamilton Standard two-bladed propeller.
Racing History
Businessman Marion Guggenheim proposed that Hall convert the aircraft into a racer to compete in the National Air Races. The modified Bulldog participated, finishing sixth with an average speed of 215.57 miles per hour (347 km/h).
It was believed that an experimental propeller prevented the engine from delivering its full power.
Technical Specifications
| Modification | Bulldog |
| Wingspan, m | 7.92 |
| Aircraft length, m | 5.79 |
| Engine type | 1 Piston engine Pratt & Whitney R-985 Wasp Junior |
| Power, hp | 1 x 550 |
| Maximum speed, km/h | 365 |
| Cruising speed, km/h | 347 |
| Crew | 1 |
Image and diagram gallery of the Hall Bulldog
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ArchivoAéreo Editorial Team
A group of aviation researchers and enthusiasts dedicated to documenting and preserving global aeronautical history. All articles are reviewed to ensure historical accuracy.
Sources & Accuracy
The information presented in this technical sheet has been compiled from declassified flight manuals, historical archives, and specialized literature. While we strive for maximum accuracy, some performance data may vary depending on the specific variant or operational conditions.