The canopy inflatable seal system (fig. 3-2)
Q3-13.
On a fully opened canopy, what is the
provides an airtight seal between the canopy assembly
approximate closing time?
and the aircraft structure to maintain cockpit
Q3-14.
When reservoir pressure drops below 225 psi,
pressurization. This section will cover the description,
what mode is used to unlock the canopy?
components, and operation of the canopy inflatable seal
system.
CANOPY INFLATABLE SEAL SYSTEM
The system, using cooled engine bleed air from the
LEARNING OBJECTIVE: Describe the
service air heat exchanger core, inflates the canopy seal
canopy inflatable seal system and its compo-
in response to movement of the canopy locking linkage.
nents.
The system deflates the seal when the canopy is
M
BOOTSTRAP TURBINE-
WARM AIR
FROM PRIMARY
TO ANTI-G, PRESSURE/
VENTILATION SUIT, EQUIPMENT
PRESSURIZATION SYSTEMS AND SERVO
AIR SUPPLY
SERVO AIR
GROUND
CONNECTION
SERVICE AIR
HEAT EXCHANGER
TO AVIONIC EQUIPMENT
BAYS TEMPERATURE
CONTROL SYSTEM
FROM EMERGENCY
RAM AIR SYSTEM
CANOPY
INFLATABLE
SEAL
RELIEF/
VENT
PORT
CANOPY SEAL
1
PRESSURE REGULATOR
NOTE
1
Canopy seal pressure regulator vents pressure
RELIEF
from seals when plunger is depressed and
VALVE
pressurizes seals when plunger is released.
STEM
Plunger is actuated by locking and unlock
action of canopy.
BELLOWS
BALL
SEAT
LEGEND
FLANGE
SHUTOFF
VALVE
Warm Air
Regulated Pressure
Cool Air
INLET
Mechanical Linkage
PRESSURE GAUGE
CHECK VALVE
Check Valve
TEST PORT
PLUNGER
AMEf0302
Figure 3-2.--Canopy inflatable seal system.
3-6