Propeller Owner's Manual
115N
DESCRIPTION AND OPERATION
61-00-15
Page 2-14
Rev. 24 Dec/20
(6) In some cases, particularly in seaplane applications, it
is undesirable to feather the propeller when the engine
is stopped after landing. To prevent feathering during
normal engine shutdown, the propeller incorporates spring
energized latches. If propeller rotation is approximately
800 RPM or above, the latches are disengaged by
centrifugal force acting on the latch weights to compress
the springs. When RPM drops below 800 RPM (and blade
angle is typically within 7 degrees of the low pitch stop),
the springs overcome the centrifugal force and move the
latches to engage the high pitch stops, preventing blade
angle movement to feather.
(7) Start lock latches are not employed on all -5 propellers.
Propellers without start lock latches will feather during
normal engine shutdown.
Содержание HC-C2YR-4CF/FC8475-6
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