Propeller Owner's Manual
136
INTRODUCTION
61-00-36
Page 1-16
Rev. 2 Feb/17
Underspeed . . . . . . . . .
The condition in which the actual
engine (propeller) RPM is lower
than the RPM selected by the pilot
through the propeller control lever.
Variable Force
. . . . . . .
A force which may be applied,
varied, or removed during propeller
operation.
Vertical Balance
. . . . . .
Balance between the leading
and trailing edges of a two-blade
propeller with the blades positioned
vertically.
Windmilling
. . . . . . . . . .
The rotation of an aircraft propeller
caused by air flowing through it
while the engine is not producing
power.
Term
Definition