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I know a guy who dimpled his leading edge on his prop on an experimental airplane and he claims it helped. Supposedly it helps keep the airflow stay attached further back on the airfoil shape for a given angle of attack. The further back that it stays attached, the less turbulence will result after the airflow separates near the trailing edge.
The golf ball drawing above shows this.
Basically you get more lift (or thrust on a propellor) with less drag.
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German autos: '79 911 SC, '87 951, '03 330i, '08 Cayenne, '13 Cayenne
0% Liberal
Men do not quit playing because they get old.... They get old because they quit playing.
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