Hartzell HC-B3-2 Series Owner's Manual And Logbook page 57

Term
Synchronizing
Synchrophasing
Ticking
Track
Trailing Edge
Trimline
Underspeed
Unidirectional Material
Variable Force
Propeller Owner's Manual
Adjusting the RPM of all the propellers
of a multi-engine aircraft to the same
RPM
A form of propeller sychronization in
which not only the RPM of the engines
(propellers) are held constant, but also
the position of the propellers in relation
to each other
A series of parallel marks or scratches
running circumferentially around the
diameter of the blade
In an assembled propeller, a
measurement of the location of the
blade tip with respect to the plane of
rotation, used to verify face alignment
and to compare blade tip location with
respect to the locations of the other
blades in the assembly
The aft edge of an airfoil over which the
air passes last
Factory terminology referring to where
the part was trimmed to length
The condition in which the actual engine
(propeller) RPM is lower than the
RPM selected by the pilot through the
propeller control/condition lever
A composite material in which the fibers
are substantially oriented in the same
direction
A force that may be applied or removed
during propeller operation
INTRODUCTION
139
Definition
61-00-39
Rev. 17 Apr/20
Page 1-27