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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]
[clarification needed] The choice between using thrusters or traditional propellers to propel marine vessels is a compromise between versatility and efficiency. Propellers are designed to work in-line with a propulsion plant and produce one-directional thrust while thrusters are more customizable and have a more versatile application.
Modular propellers may be fitted to aircraft as well as boats. [1] The benefits of a modular propeller are that its specifications (such as blade pitch or propeller diameter) may be altered to suit varying conditions; and it becomes much easier to replace damaged elements, such as a broken blade. Traditional one-piece propellers may be ...
Berkeley was notable for having been the first propeller-driven ferry on the west coast. At the time of her launching on October 18, 1898, she became the largest commuter ferryboat in the United States with a 1700-passenger capacity.
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.
An additional 90 propellers a day were produced at the other three plants. The plants used 158,000 sqft of dry kilns to process wood and custom duplicating machines that reduce the number of lathes required for the construction process. Over 25,000 propellers were produced in World War I with 8000 delivered to the Royal Flying Corps Canada. [5]