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Throughout the mid-20th century, Sensenich wood props were available on nearly all 1-seat and 2-seat U.S.-made aircraft, many of which still operate today. Sensenich expanded into airboat propellers in 1949, establishing a second factory for that market at Plant City, Florida under the name Sensenich Wood Propeller Company.
Hartzell Propeller - United States (1917–present) Hegy Propellers - United States; Heine Propellers - Germany; Helix-Carbon - Germany; Hercules Propellers - UK; F. Hills & Sons - UK; Historic Propellers - Czech Republic (2012 - present) Hoffmann Propeller - Germany (1955–present) Hordern-Richmond - UK (1937-circa 1990)
McCauley Propeller Systems is an American aircraft propeller manufacturer, founded in Dayton, Ohio in 1938 by Ernest G. McCauley. [1] At its peak, it was reportedly the world's largest aircraft propeller manufacturer, [ 2 ] or at least the largest manufacturer of general aviation propellers.
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Hartzell introduced a turboprop propeller in 1961 and, in 1975, certified a 5-bladed propeller for the Short 330. [9] [12] In 1978, the company produced a composite aramid fiber propeller for the CASA 212. [13] In 1989, Hartzell produced sixteen-foot propellers for the Boeing Condor, another record-breaking aircraft. [11]
One of the four contra-rotating propellers on a Tu-95 Russian strategic bomber. In the 1950s, the Soviet Union's Kuznetsov Design Bureau developed the NK-12 turboprop. It drives an eight-blade contra-rotating propeller and, at 15,000 shaft horsepower (11,000 kilowatts), it is the most powerful turboprop in service.
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A constant-speed propeller is a variable-pitch propeller that automatically changes its blade pitch in order to maintain a chosen rotational speed, regardless of the operational conditions of the aircraft. This is achieved by use of a constant-speed unit (CSU) or propeller governor, which automatically changes the propeller's blade pitch.