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Dowty Rotol R391 six-blade composite controllable- and reversible-pitch propeller of a C-130J Super Hercules. In aeronautics, a variable-pitch propeller is a type of propeller (airscrew) with blades that can be rotated around their long axis to change the blade pitch.
The blade pitch may be fixed, manually variable to a few set positions, or of the automatically variable "constant-speed" type. The propeller attaches to the power source's driveshaft either directly or through reduction gearing. Propellers can be made from wood, metal or composite materials.
Variable-pitch propeller (marine) ... Variable-pitch propeller (aeronautics) This page was last edited on 30 August 2021, at 05:49 (UTC). Text is available under the ...
The controllable-pitch or variable-pitch propeller tied together the major aeronautical advances of aerodynamic drag reduction and increased engine power. [ 3 ] [ 8 ] In 1933, the most modern aircraft in the world, Boeing's Model 247 operated by United Air Lines struggled to reach 6000 feet.
A propeller (often called a screw if on a ship or an airscrew if on an aircraft) is a device with a rotating hub and radiating blades that are set at a pitch to form a helical spiral which, when rotated, exerts linear thrust upon a working fluid such as water or air. [1]
Since 1930, Hamilton Standard (now Hamilton Sundstrand) was involved with revolutionizing the propulsion technology of propeller-driven aircraft, prior to World War II. The introduction of Frank Caldwell's variable-pitch propeller made Hamilton Standard one of the leading aerospace companies of today. Hamilton contributed a great deal in ...
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