Ground-adjustable propeller

A ground-adjustable propeller is a simple type of aircraft variable-pitch propeller where the blade angle can be adjusted between pre-set limits of fine and coarse pitch.[1] 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.[2]

A ground adjustable propeller on a Rotax 912S engine, mounted in a 3Xtrim 3X55 Trener.

Ground-adjustable propellers, which tend to be found on light aircraft and very light aircraft, 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.[3]

Manufacturers

See also

References
  1. Crane, Dale: Dictionary of Aeronautical Terms, third edition, page 86. Aviation Supplies & Academics, 1997. ISBN 1-56027-287-2
  2. Experimental Aircraft Association (9 December 2010), Adjusting a Ground-Adjustable Propeller Archived 2017-06-10 at the Wayback Machine, retrieved 6 June 2015
  3. "Adjustable-Pitch Propellers (Part One)". Flight Learnings. Retrieved 6 June 2015.
  4. "Arplast Hélice sarl" (in French). Arplast-helice.com. Archived from the original on 2013-05-22. Retrieved 2013-06-01.
  5. Dave Loveman. "IVOPROP Ground Adjustable Magnum Propeller >". Ivoprop.com. Retrieved 2012-04-30.
  6. "Warp Drive Carbon fiber Composite Propellers". Warpdriveprops.com. Retrieved 2012-04-30.
  7. "ON GROUND ADJUSTABLE PROPELLER – TYPE KLASSIC 170 - WOODCOMP". Woodcomp.cz. Archived from the original on 2010-07-23. Retrieved 2012-04-30.
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