Hartzell HC-E4 3 Series, Руководство пользователя

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Propeller Owner’s Manual
147
INTRODUCTION
61-00-47
Page 1-20
Rev. 16 May/20
Term Definition
Composite Material Kevlar
®
, carbon, or fiberglass fibers bound
together with, or encapsulated within an
epoxy resin
Compression
Rolling
A process that provides improved strength
and resistance to fatigue
Constant Force A force that is always present in some
degree when the propeller is operating
Constant Speed A propeller system that employs a governing
device to maintain a selected engine RPM
Corrosion
(Aluminum)
The chemical or electrochemical attack
by an acid or alkaline that reacts with the
protective oxide layer and results in damage
of the base aluminum. Part failure can occur
from corrosion due to loss of structural
aluminum converted to corrosion product,
pitting, a rough etched surface finish, and
other strength reduction damage caused by
corrosion.
Corrosion (Steel) Typically, an electrochemical process that
requires the simultaneous presence of iron
(component of steel), moisture and oxygen.
The iron is the reducing agent (gives up
electrons) while the oxygen is the oxidizing
agent (gains electrons). Iron or an iron alloy
such as steel is oxidized in the presence
of moisture and oxygen to produce rust.
Corrosion is accelerated in the presence
of salty water or acid rain. Part failure can
occur from corrosion due to loss of structural
steel converted to corrosion product, pitting,
a rough etched surface finish and other
strength reduction damage caused by
corrosion.