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The Boeing Model 40 is a United States mail plane of the 1920s. It was a single-engined biplane that was widely used for airmail services in the United States in the 1920s and 1930s, especially by airlines that later became part of United Airlines. It became the first aircraft built by the Boeing company to carry passengers.
Keystone B-6 of the US Army Air Corps, in use as a mail plane, 1934 1920s Boeing Model 40 mail plane. A mail plane is an aircraft used for carrying mail. Aircraft that were purely mail planes existed almost exclusively prior to World War II. Because early aircraft were too underpowered to carry cargoes and too costly to run any "economy class ...
The Boeing Model 95 was a single engine biplane mailplane built by Boeing in the United States in the late 1920s to supplement the Boeing Model 40s being used on Boeing's airmail routes. Development [ edit ]
By the time variable-pitch propellers and more powerful engines were available, the design had been surpassed by multi-engined aircraft, including Boeing's own 247. However, many advancements of the Monomail were incorporated into the designs of the most advanced bomber and fighter aircraft of the early 1930s, the Boeing B-9 and the Model 248 ...
Boeing B-1 biplane flying boat mailplane; Boeing Model 40 biplane air mail carrier ... Boeing Business Jet long-range large corporate jet; Boeing 2707 Supersonic ...
United States aircraft of the 1920s; Military: Anti-submarine aircraft • Attack • Bomber • Electronic warfare • Experimental • Fighter • Patrol • Reconnaissance • Trainer • Transport • Utility
A whole family of successful fighters followed, along with Boeing's first commercial airliners the Model 40 mailplane and subsequent Model 80 airliner. [ 12 ] [ page needed ] After becoming the company's vice president in 1926, Egtvedt continued to push the company's airplane designs forward, helping define the configuration of the seminal ...
Stearman Aircraft developed the Model 4 from the C3, adding a deeper fuselage and offering a range of more powerful engines. These features enabled the Model 4 to carry heavier cargo loads. Being larger than the C3, but smaller than the M-2 and LT-1 models, it filled a gap in the Stearman product line. Heaters were provided for both cockpits. [3]