then deployed by the drogue and the WORD
motor, depending upon airspeed at the time of
manual override initiation.
There are several functional subsystems of the
Stencel SJU-8/A ejection seat. The subsystems are
described in the approximate order in which they
operate in the ejection sequence.
Safe/Arm Control Assembly
and Link Subsystem
The safe/arm control assembly and link sub-
system (fig. 6-38) places the seat in either a safe
or an armed condition. The subsystem safeties
three mechanically actuated M99 initiators when
the seat is not occupied or when it needs to be
kept in the safe condition. For the safe position,
you should pull the knob on the handle to
disengage the lock. Then move the handle to the
full UP position. The seat is safetied by
mechanically positioning a link and plunger,
which prevents rotation of the initiation subsystem
rotors. It also safeties the linkage that actuates
the seat/man separation initiator. For the armed
position, you should pull the knob on the handle
and move the handle to the full DOWN position.
Ejection Initiation Subsystem
The ejection initiation subsystem (fig. 6-39)
consists of an ejection control handle, mechanical
Figure 6-39.Ejection initiation system.