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A ground-adjustable propeller is a simple type of aircraft
A ground-adjustable propeller is a simple type of aircraft variable-pitch
In marine propulsion, a variable-pitch propeller is a type of propeller with blades that can be rotated around their long axis to change the blade pitch. Reversible propellers—those where the pitch can be set to negative values—can also ...
propeller
A propeller (colloquially 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 ...
where the blade angle can be adjusted between pre-set limits of fine and coarse pitch.Crane, Dale: ''Dictionary of Aeronautical Terms, third edition'', page 86. Aviation Supplies & Academics, 1997. As its name implies, a ground-adjustable propeller may be adjusted only when the aircraft is on the ground and when the engine is not running. To adjust the propeller, the blades are loosened in the hub, a new angle set and then the hub tightened.
Ground-adjustable propellers, which tend to be found on light aircraft
A light aircraft is an aircraft that has a maximum gross takeoff weight of or less.Crane, Dale: ''Dictionary of Aeronautical Terms, third edition'', page 308. Aviation Supplies & Academics, 1997.
Light aircraft are used as utility aircraft c ...
and very light aircraft
EASA CS-VLA is the European Aviation Safety Agency Certification Specification for Very Light Aircraft.
The Very Light Aircraft (VLA) aircraft certification category introduced in 2003 by the European Aviation Safety Agency (EASA) is intended to ...
, are much cheaper and lighter in weight than in-flight-adjustable propellers. Although a ground-adjustable propeller is much less versatile than an in-flight-adjustable equivalent, nevertheless, compared to a fixed pitch propeller, a ground-adjustable propeller means that pitch changes can be made on the ground to optimise the aircraft for current payload and flying conditions.
Manufacturers
* Arplast EcoProp *Ivoprop
Ivoprop Corporation, founded in 1984 by Ivo Zdarsky, is an American manufacturer of composite propellers for homebuilt and ultralight aircraft, as well as airboats. The company's headquarters are in Long Beach, California.Purdy, Don: ''AeroCraf ...
* Warp Drive Inc
Warp Drive Inc is an American manufacturer of composite propellers for ultralight aircraft, ultralight trikes, light-sport aircraft, amateur-built aircraft, gyrocopter, airboats and other non- certified applications. The company is based in V ...
* Woodcomp
See also
*List of aircraft propeller manufacturers
This is a list of aircraft propeller manufacturers both past and present:
A
* Aero Ltd. - Poland
* AeroLux Propellers - United States
* Aeroproducts - United States
* Aerosila - Russia
* Airmaster Propellers - New Zealand
* The Airscrew Comp ...
References
{{Reflist, 30em Propellers