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The company's headquarters are in Long Beach, California. [1] [2] Zdarsky started the company after carving his own propeller for a homebuilt ultralight trike that he flew from Cold War Czechoslovakia, over the Iron Curtain to Vienna in 1984. Ivoprop has sold more than 20,000 propellers since then. [1] [2]
The company's first major product was an oil cooler for military aircraft. Garrett designed and produced oil coolers for the Douglas DB-7. [9] Boeing's B-17 bombers, credited with substantially tipping the air war in America's and Great Britain's favor over Europe and the Pacific, were outfitted with Garrett intercoolers, as was the B-25. [12]
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)
[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] Hartzell introduced "Top-Prop" replacement propellers for piston-engine aircraft in 1991 and sold 20,000 Top-Prop conversion kits ...
Four manufacturing plants operated in Baltimore to meet World War I production contracts . The 95,000 sq foot plant number four was constructed in 1918 specifically for propeller production with a capacity of 300-500 propellers per day. An additional 90 propellers a day were produced at the other three plants.
Performance Propellers, officially Performance Propellers USA, LLC, is an American manufacturer of wooden propellers for homebuilt and ultralight aircraft. The company headquarters is located in Donie, Texas and was formerly in Patagonia, Arizona .
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Props Inc, founded in 1985 by Jeff Bertuleit, is an American manufacturer of wooden propellers for homebuilt and ultralight aircraft. The company headquarters is located in Newport, Oregon . [ 1 ] [ 2 ]