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Hamilton Standard was an American aircraft propeller parts supplier. It was formed in 1929 when United Aircraft and Transport Corporation consolidated Hamilton Aero Manufacturing and Standard Steel Propeller into the Hamilton Standard Propeller Corporation.
Thomas Foster Hamilton (July 28, 1894 – August 12, 1969) was a pioneering aviator and the founder of the Hamilton Standard Company. [1]Since 1930, Hamilton Standard (now Hamilton Sundstrand) was involved with revolutionizing the propulsion technology of propeller-driven aircraft, prior to World War II.
In 1929, Caldwell transitioned from the US Army Air Service to the Hamilton Standard Propeller Corporation where he further developed the controllable-pitch propeller. The controllable-pitch or variable-pitch propeller tied together the major aeronautical advances of aerodynamic drag reduction and increased engine power.
A Hamilton Standard variable-pitch propeller on a 1943 model Stinson V77 Reliant. A number of early aviation pioneers, including A. V. Roe and Louis Breguet, used propellers which could be adjusted while the aircraft was on the ground. [3]
de Havilland Propellers was established in 1935, as a division of the de Havilland Aircraft company when that company acquired a licence from the Hamilton Standard company of America for the manufacture of variable-pitch propellers at a cost of about £20,000. [1] [citation needed] Licence negotiations were completed in June 1934.
Propellers: Three-bladed Hamilton Standard propellers mounted in wingtip swiveling ducts Performance Maximum speed: 278 kn (320 mph, 515 km/h) at 10,000 ft (3,048 m)
A 6-bladed Hamilton Standard 568F propeller on an ATR 72 short-haul airliner. Lowry [27] quotes a propeller efficiency of about 73.5% at cruise for a Cessna 172.This is derived from his "Bootstrap approach" for analyzing the performance of light general aviation aircraft using fixed pitch or constant speed propellers.
The company expanded its facilities to produce the Hamilton Standard propellers to become the largest manufacturer of this type of propeller with more than 158,000 units made with an additional over 85,000 spare blades, assembling nearly 17,000 Pratt & Whitney R-2800 Double Wasp 18-cylinder, air-cooled aircraft engine, making the newly ...