Propeller Owner’s Manual
147
INTRODUCTION
61-00-47
Page 1-26
Rev. 16 May/20
Term
Definition
Scratch
Same as “Nick”
Short Circuit
Connection of low resistance between points
on a circuit between which the resistance is
normally much greater
Shot Peening
Process where steel shot is impinged on
a surface to create compressive surface
stress, that provides improved strength and
resistance to fatigue
Single Acting
Hydraulically actuated propeller that utilizes
a single oil supply for pitch control
Split
Delamination of blade extending to the blade
surface, normally found near the trailing
edge or tip
Station Line
See "Blade Station"
Synchronizing
Adjusting the RPM of all the propellers of a
multi-engine aircraft to the same RPM
Synchrophasing
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
Ticking
A series of parallel marks or scratches
running circumferentially around the
diameter of the blade
Track
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