T-45A UJPT, E2-C2, ADV, & IUT Eng-15
Egress System
A.
Major components
Sg 3, fr 2
1.
Catapult assembly
a.
Location: back of ejection seat
b.
Function: provides initial power to eject
seat
CATAPULT ASSEMBLY
c.
Components
(1) Outer barrel
(2) Telescopic piston (inside outer
barrel)
(3) Initiator cartridge
(4) Ballistic latch (2)
(5) Guide rails (2)
NOTE: Two guide rails attach the
assembly to the main beams, and
mounting lugs attach the assembly
to the aircraft.
2.
Main beam assembly
Sg 3, fr 3
(4 overlays)
a.
Location: back of seat between seat
bucket and catapult assembly
b.
Function: establishes tracks to control
seat travel during catapult travel and
ensures system rigidity
c.
Components
MAIN BEAM ASSEMBLY
(1) Two main beams and upper and
Overlay 1
lower crossbeams
Components 1, 2, 3
(2) Shoulder harness retraction unit
Page 15-12
(8-03) Original
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