Operation and nomenclature: stabilizer
RESTRICTED
SECTION I
OPERATION AND NOMENCLATURE STABILIZER
PURPOSE OF
STABILIZER
The stabilizer is used as a base for the
bombsight and provides the housing and mountings
for the mechanical devices used to maintain an
azimuth reference line, or more specifically,
to stabilize the bombsight case (i.e. entire case
including the fore and aft hair) in azimuth, and
with AFCES in operation to stabilize the entire
plane against deviations from course.
GENERAL
DESCRIPT-
ION OF
STABILIZER
FIG. 1-2
In our discussion of the stabilizer, we will
use the terms front and rear, right and left, as
the stabilizer is seen from the position of the
bombardier. On the rear of the stabilizer housing
is an inspection plate or cover which is fastened
to the housing with four screws. The removal of
this cover permits inspection of the horizontal
gyro and cardan.
To the right of the rear cover is the PDI
switch. On the top of the stabilizer are the
following: clutch cover plate, bombsight clutch,
bombsight clutch connecting rod, bombsight clutch
connecting rod clamp bracket, auto-pilot clutch,
directional arm, PDI coil and brush view glass,
drift gear and clutch assembly, and drift scale.
The PDI coil mounting plate, the switch
panel containing, as designated, the stabilizer,
servo and bombsight switches, the stabilizer and
the bombsight male cannon plugs, are on the right
side of the stabilizer housing.
Located on the front of the stabilizer hous-
ing is the torque or servo motor, which is acces-
sible by removing the inspection cover which is
attached with four screws.
On the left side of the housing are the pro-
jections for mounting the directional panel.
STABILIZER
ASSEMBLIES
A. Bombsight
Clutch
(Directional)
C. L. I.
B-43-12
The bombsight clutch is purely mechanical.
It provides a slip connection between the horizon-
tal gyro and the bombsight. The clutch is engaged
and disengaged by operating the bombsight clutch
thumb lever. The male part is the upper end of
the directional stabilizer cardan gudgeon. A
spring and nut are provided for adjustment of the
clutch tension. The clutch must be adjusted to
3