191 page MARTIN BAKER MK-J5D EJECTION SEAT Maintenance & Parts Manual on CD

Description

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Full Title:  ORGANIZATIONAL, DS AND GS MAINTENANCE MANUAL EJECTION SEAT, MODEL MK-J5D
(MARTIN-BAKER) PART NUMBER 134AB80000
191 total pages copied to CD-ROM – not copied from another CD-ROM product.
Published in 1974 - updated to 1991
Description.
The Model MK-J5D Ejection Seat (figure 1-2) is a
fully automatic personnel ejection seat. This seat
provides for safe personnel ejection from the OV-1
aircraft at 60 knots ground level, during takeoff, and at
all operational flight altitudes. Seat systems provide for
automatic parachute deployment and separation of
seat from occupant after ejection. The ejection seat
assembly is composed of subassemblies and systems
described in the following subparagraphs.
a. Basic Seat Assembly. The basic seat assembly
(figure 1-1) consists of the following:
(1) A basic seat structure consists of a light
frame and two side beams bridged by three crossmembers
and a lumbar contour support backplate which
provides for the occupant's comfort and protection.
(2) The seat assembly also consists of the seat
bucket, seat and back cushions, and thigh supports. The
personnel lowering devices are stored in the thigh
support cushions. Storage space for the survival
equipment is in the survival kit container located under
the seat cushion.
(3) The main beam assembly is the framework
to which all the major components of the ejection seat are
mounted. See figure 1-3 for main beam assembly details.
(4) The seat rail mounting is attached to the
ejection gun by two guide tracks. The tracks mate with
three sets of slippers on the main beam assembly. A
plunger, engaging in the locking groove of the ejection
gun primary cartridge breech, locks the seat in position.
(5) The seat bucket (29, figure 1-2) can be
raised and lowered by an electrical seat actuating
jack mechanism (see figure 1-4). A momentary toggle
switch (13, figure 1-2) on the right side of the seat raises
or lowers the seat bucket. When the toggle switch is
pushed forward, the seat is lowered. When the toggle
switch is pulled aft, the seat is raised. When the toggle
switch is released, it returns to the middle (neutral)
position.