The Bird Wing or later, Bird Wing Imperial was a light sport

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 ...

of the 1920s and 1930s.

Development

The first Bird Wing took McCrum and his assistants 63 days to build at a cost of

US$ The United States dollar (Currency symbol, symbol: Dollar sign, $; ISO 4217, currency code: USD) is the official currency of the United States and International use of the U.S. dollar, several other countries. The Coinage Act of 1792 introdu ...

12,000. The prototype flew over 5000 passengers over a period of 15 months. Charles Lindbergh flew the plane for 45 minutes of his lotted hour of time in St Joseph during his stop in St Joseph, MO during his 1927 tour. The second plane was also powered by a Curtiss OX-5 engine. The 3rd plane was the first Imperial powered by a Wright-Hisso engine the fourth and fifth planes were powered by Wright J5 Whirlwinds. The US Army ordered 50 Imperials to be used as trainer, the order was cancelled due to the depression. The company was taken to bankruptcy court by its creditors in Jan 1931. The company's assets were sold at auction in February. McCrum revised the plans for the Bird Wing again in the 1950s to install a

Pratt & Whitney R-985 Wasp Junior The Pratt & Whitney R-985 Wasp Junior is a series of nine-cylinder, air-cooled, radial aircraft engines built by the Pratt & Whitney Aircraft Company from the 1930s to the 1950s. These engines have a displacement of ; initial versions produced ...

radial engine The radial engine is a reciprocating engine, reciprocating type internal combustion engine, internal combustion engine configuration in which the cylinder (engine), cylinders "radiate" outward from a central crankcase like the spokes of a wheel. ...

and a 3-inch

fuselage The fuselage (; from the French language, French ''fuselé'' "spindle-shaped") is an aircraft's main body section. It holds Aircrew, crew, passengers, or cargo. In single-engine aircraft, it will usually contain an Aircraft engine, engine as wel ...

widening to convert the design into an

agricultural aircraft An agricultural aircraft is an aircraft that has been built or converted for agricultural use – usually aerial application of pesticides (crop dusting) or fertilizer (aerial topdressing); in these roles, they are referred to as "crop duste ...

which never went into production. St Joseph News Press/Gazette

Design

The biplane features welded steel tube fuselage with

aircraft fabric covering Aircraft fabric covering is a term used for both the material used and the process of covering aircraft open structures. It is also used for reinforcing closed plywood structures. The de Havilland Mosquito is an example of this technique, as are ...

and

spruce A spruce is a tree of the genus ''Picea'' ( ), a genus of about 40 species of coniferous evergreen trees in the family Pinaceae, found in the northern temperate and boreal ecosystem, boreal (taiga) regions of the Northern hemisphere. ''Picea'' ...

wood spar wings.

Operational history

Among the many pilots who flew the Bird Wing were

Hap Arnold Henry Harley "Hap" Arnold (25 June 1886 – 15 January 1950) was an American general officer holding the ranks of General of the Army and later, General of the Air Force. Arnold was an aviation pioneer, Chief of the Air Corps (1938–1 ...

and

Charles Lindbergh Charles Augustus Lindbergh (February 4, 1902 – August 26, 1974) was an American aviator, military officer, and author. On May 20–21, 1927, he made the first nonstop flight from New York (state), New York to Paris, a distance of . His aircra ...

. McCrum offered comprehensive

flight training Flight training is a course of study used when learning to pilot an aircraft. The overall purpose of primary and intermediate flight training is the acquisition and honing of basic airmanship skills. Flight training can be conducted under a str ...

courses which included flight training in a Bird Wing as well as construction of the aircraft from scratch. The Bird Wing Imperial was tested to meet a 1931 requirement for a United States PT trainer. 50 orders were placed, then canceled at the beginning of the

Great Depression The Great Depression was a severe global economic downturn from 1929 to 1939. The period was characterized by high rates of unemployment and poverty, drastic reductions in industrial production and international trade, and widespread bank and ...

Variants

*Bird Wing No 1 - 1927 Powered by closely cowled OX-5 engine *Bird Wing No. 2 - 1928 Upper and lower

aileron An aileron (French for "little wing" or "fin") is a hinged flight control surface usually forming part of the trailing edge of each wing of a fixed-wing aircraft. Ailerons are used in pairs to control the aircraft in roll (or movement aroun ...

s *Bird Wing No, 3 - 1929 Imperial powered by 180 hp Wright-Hisso engine *Bird Wing No. 4 - 1930 Imperial powered Wright J5 radial engine *Bird Wing No, 5 - 1930 Imperial Wright R-540 powered. Max speed 125 mph

Specifications (Bird Wing Model 1) 1927

References

4. Oct 1927 Popular Aviation 5. Jun 1927 Aviation 6. Nov 1958 Sport Aviation 7. Dec 1958 Sport Aviation {{reflist 1910s United States sport aircraft Biplanes Aircraft first flown in 1927 Single-engined tractor aircraft Aircraft with conventional landing gear Single-engined piston aircraft