Propeller Owner’s Manual
139
INTRODUCTION
61-00-39
Page 1-28
Rev. 17 Apr/20
Term
Definition
Vertical Balance
Balance between the leading and trailing
edges of a two-blade propeller with the
blades positioned vertically
Voids
Air or gas that has been trapped and
cured into a laminate
Windmilling
The rotation of an aircraft propeller
caused by air flowing through it while the
engine is not producing power
Woven Fabric
A material constructed by interlacing
fiber to form a fabric pattern
Wrinkle (aluminum
blade)
A wavy appearance caused by high and
low material displacement
Wrinkle (composite
blade)
Overlap or fold within the material