I A P 2 0 2 3 . 0 0 1 - A F M / I R I S T E X A N I I P A G E | 65
FOR SIMULATION USE ONLY ā NOT A TRAINING AID
To open the canopy from the inside:
1. Raise lock release lever located aft of internal canopy handle.
2. Hold lock release lever in UNLOCK position while slowly rotating internal canopy
handle aft to placarded OPEN position.
3. Lift canopy open.
CANOPY FRACTURING SYSTEM (CFS)
The aircraft uses a dual redundant canopy fracturing system (CFS) to provide a
clear path for the pilot(s) during ejection or emergency ground egress. The CFS
uses a flexible linear shaped charge (FLSC) installed around the periphery and
down the centreline of the front transparency, and a mild detonating cord (MDC)
installed in separate parts, one around the periphery, and one down the centreline
of the rear transparency (in a diamond pattern).
The CFS has two modes of operation; automatic initiation during ejection, and
manual initiation from either internal or external CFS initiators. An internal CFS
handle, located on the left console behind the PCL in each cockpit, allows manual
activation of the fracturing system for the transparency over the respective cockpit.
There are also two external CFS handles and initiators behind placarded ground
egress doors on either side of the aircraft below the canopy sill. Either external
CFS initiator will activate the fracturing system for both transparencies.
The front CFS detonates the FLSC around the periphery and down the centreline to
sever the transparency into two halves. During rear seat ejection, only the rear
transparency centreline diamond pattern detonates.
However, activating the rear cockpit CFS handle or either external CFS handle will
detonate both the periphery and diamond pattern of the rear transparency. Force of
the detonation jettisons the transparency parts away from the canopy frame.
The CFS is good for only one actuation; if a CFS handle is pulled, the system cannot
be reset simply by resetting the handle - at a minimum, system components
between the handle and the optical detonator will need to be replaced.
Each CFS initiator includes piezoelectric crystals and a flash lamp bank. When the
CFS handle is pulled, the piezoelectric crystal produces an electric charge to fire
the flash lamps which provide a light source. The light excites a laser rod, which
sends laser energy along fibre optic cables to the optical detonators at the canopy
sill. The optical detonators fire plungers across the air gap between the optical
detonators on the canopy sill and the CFS acceptor assemblies on the canopy. The
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