A propeller speed reduction unit is a gearbox or a belt and pulley device used to reduce the output revolutions per minute (rpm) from the higher input rpm of the powerplant.[1] This allows the use of small displacement internal combustion engines to turn aircraft propellers within an efficient speed range.
- ^ Gunston 2006, p. 82.
© MMXXIII Rich X Search. We shall prevail. All rights reserved. Rich X Search