The Boeing Model 6D, a.k.a. Boeing Model 6E, Boeing B-1D and Boeing B-1E, was an American pusher

biplane A biplane is a fixed-wing aircraft with two main wings stacked one above the other. The first powered, controlled aeroplane to fly, the Wright Flyer, used a biplane wing arrangement, as did many aircraft in the early years of aviation. While ...

flying-boat A flying boat is a type of fixed-winged seaplane with a hull, allowing it to land on water. It differs from a floatplane in that a flying boat's fuselage is purpose-designed for floatation and contains a hull, while floatplanes rely on fusela ...

built by Boeing between 1928 and 1929.

Development and design

The Model 6D continued the designation series of the 1919

Boeing Model 6 The Boeing B-1 (company designation Model 6) was a small biplane flying boat designed by William Boeing shortly after World War I. Design and development The Model 6 was the first commercial design for Boeing (as opposed to military or experiment ...

but the only similarity was that they are both biplane pusher flying-boats. The 6D was designed in 1928 and 2 aircraft were built between May 1928 and April 1929. The 6Ds rectangular hull was constructed of wood with wood longerons, covered in spruce veneer. Wings were taken from the Model 40 and shortened, with the pusher engine and wood propeller mounted on the lower side of the upper wing. Boeing model B1D 6D drawing

A slightly heavier, more robustly built version, powered by a

Pratt & Whitney R-1340 Wasp The Pratt & Whitney R-1340 Wasp is an aircraft engine of the reciprocating type that was widely used in American aircraft from the 1920s onward. It was the Pratt & Whitney aircraft company's first engine, and the first of the famed Wasp series ...

engine, was produced as the B-1E / Model 204 / Model 204A.

Variants

;B-1D:2:Two aircraft powered by

Wright J-5 Whirlwind The Wright R-790 Whirlwind was a series of nine-cylinder air-cooled radial aircraft engines built by Wright Aeronautical Corporation, with a total displacement of about and around . These engines were the earliest members of the Wright Whirlwin ...

9-cyl radial engines ;B-1E:Almost identical to the B-1D with strengthened structure, the B-1E was powered by a

. Five aircraft were built, of a batch of ten, the remaining aircraft were re-designated Model 204. ;

Model 204 Model 204 (M204) is a database management system for IBM and compatible mainframe computers developed and commercialized by Computer Corporation of America. It was announced in 1965, and first deployed in 1972. It incorporates a programming langua ...

:Five B-1E airframes re-designated before completion. Only two were completed by Boeing, one Model 204 and one Model 204A, with a third completed by a private party using the c/n and registration of the original airframe. ;Model 204A:The second Model 204 airframe completed as a dual-control trainer for William E. Boeing.

Specifications (B-1D)

References

{{Boeing model numbers 1920s United States airliners 006D Single-engined pusher aircraft Biplanes Aircraft first flown in 1928