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01-85ADC-2-5

WP 003-00 (Canopy)

QuestionAnswer
What does the canopy system consist of? The forward and aft canopy, and various subsystems necessary to operate the canopies.
What do the canopy subsystems include? Normal canopy system, emergency canopy jettison system, and canopy seal system.
How are the systems operated? All pneumatically operated.
Where are the external canopy switches located? Fuselage left side
What is the normal canopy system operated by? CANOPY handles in each cockpit
Normal operation of the normal canopy system is provided by ______. pneumatic pressure
Direct-reading pressure gauges are provided on _____ and in _____. The pressure module, the forward cockpit
Where is the pressure module located? Left aft side of the nosewheel well
What gauges are found on the pressure module? Canopy jettison and auxiliary release air pressure gauge, and canopy normal air pressure gauge
Where is the pilot's canopy pressure gauge located? In the forward cockpit
What does the pilot's canopy pressure gauge indicate? Whether or not the normal canopy system needs to be refilled
What system is used if the normal canopy system fails? Auxiliary canopy release system
There is how many auxiliary canopy release controls? 2
Where are the auxiliary canopy release controls located? One in the forward cockpit (AUX CANOPY RELEASE) and the other, a lever assembly, mounted on the air bottle in the nosewheel well
How is the canopy closed in auxiliary canopy mode? Resetting the release valve on the auxiliary release air bottle to close the canopy by gravity
How is the air release valve reset after opening the canopy in auxiliary canopy mode? Moving the lever assembly to the closed (reset) position
Operating pressures of the auxiliary canopy mode are regulated by ____ and ____ pressure reducers. 325 and 610 psi
What comprises the canopies on the aircraft? Two plain bubble-type transparent plastic panels
Where are the canopy structures mounted? On hinges at the aft end of each canopy
To what degree do the canopies open? 35 degrees
What is used to open, close, and jettison the canopies? Pneumatic actuating cylinders and mechanisms
Can the aft canopy be jettisoned individually from the aft cockpit? Yes, except on aircraft not modified by AFC 763
What two seals do the canopies incorporate? Rain seal and inflatable seal
What is the rain seal used for? To prevent water intrusion
What is the inflatable seal for? To maintain cockpit pressure
Where are the defogging diffuser pipes attached? To the forward canopy structure
How many adjustable rear view mirrors are attached to the inside of the forward canopy arch? 4
What is used to raise, lower, and jettison the canopies? The canopy actuating cylinders which are double acting pneumatic cylinders
Where is the canopy actuating cylinder installed? In the cockpit between the canopy and the actuating mechanism
What component is affixed to the actuator to limit piston speed during varying load conditions? hydraulic damper
What component locks the piston in the retracted position? ball lock assembly
What causes the piston inside the canopy actuating cylinder to move either up or down? pressurized nitrogen from the pneumatic line
During operation of the canopy where does pressurized nitrogen enter? normal inlet port or auxiliary inlet
When closing the canopy, where does pressurized nitrogen enter? top of the assembly
How many nitrogen reservoirs (air bottles) are there? 2
What are the two types of nitrogen reservoirs? normal canopy system air bottle, and auxiliary release air bottle
Where is the normal canopy system air bottle located? in the right-hand forward equipment bay
What is the capacity of the normal canopy system air bottle? 1,300 cubic inches
How many cycles of operation for each canopy does the normal canopy air bottle provide? 25
Where is the auxiliary release air bottle located? on the left-hand side of the the nosewheel well forward of the bulkhead
What is the capacity of the auxiliary release air bottle? 50 cubic inches
How sufficient is the amount of nitrogen in the auxiliary release air bottle? sufficient to open the canopies once
What component are the air bottles filled by? AIR FILLER valve on the pressure module
To what pressure are the air bottles filled? 2,450-3,000 psi at 70F
What component allows each bottle to purge of accumulated moisture? drain fittings at the top of each bottle
What is mounted on each bottle to prevent over pressurizing? relief valves
The relief valves on each bottle will not open until an internal pressure of ____ is obtained. 3,800 psi
What is mounted on the auxiliary release air bottle fitting to prevent leakage into the air supply line? check valve
What protects the normal and auxiliary release lines from damage due to over-pressurization? normal canopy system relief valve
Where is the normal canopy system relief valve located? left-hand forward section of the nosewheel well, adjacent to the auxiliary release air bottle
The normal canopy system relief valve vents the outlet ports of the three pressure reducers when pressure exceeds ____. 850 psi
The normal canopy system relief valve reseats (closes) when pressure is reduced to ____. 770 psi
The auxiliary line contains a ____ pressure reducer 325 psi
The normal canopy system line contains a ____ and ____ pressure reducer 325 and 610 psi
Where are the pressure reducers located? in the left-hand forward section of the nosewheel well, adjacent to the auxiliary release bottle
What is the purpose of the normal system pressure reducers? to set and maintain pressure to the canopy selector valves
What is the purpose of the axiliary system reducer? set and maintain pressure to the canopy actuators during system operation
Where are the canopy selector valves located? in the lower left-hand forward section of the left-hand forward section of the aft cockpit side panel
What is the purpose of the canopy selector valve? supply pressurized air to the desired inlet port of the canopy actuator
How are the canopy selector valves operated? by a pulley and cable system through the cockpit handles, and by a linkage system through the external handles (on the fuselage)
The selector valves have ____ and ____ inlet ports and vent, close and open outlet ports. 325 and 610 psi
What occurs when the canopy selector handle is moved to the CLOSE position? pressurized air enters the selector valve through the 325psi inlet, and is sent to the canopy actuator through the close port
What is installed in the canopy selector valve vent line which sounds to warn personnel that the canopy is being opened or closed? canopy warning whistle
What happens when the canopy selector handle is moved to the OPEN position? pressurized air from the 325psi line is routed to the canopy actuator from the open port and the closed line is vented through the whistle check valve
What happens when the canopy selector handle is moved to the OVERRIDE position? pressurized air from 610psi line enters the valve through the 610 psi inlet port, then it is sent to the canopy actuator through the open line
How many check valves are in the normal canopy system? 7
How many restrictor valves are installed in the normal canopy system? 2 in line two-way pneumatic restricor valves
Where are the restrictor valves located? One is connected to the outlet port of the auxiliary release air bottle, and the other in the normal canopy system supply line
On what panel and where is the CANOPY caution light located? panel 04A4 (zone 5B) in the forward cockpit
When does the CANOPY caution light come on? when either canopy is unlocked
When does the CANOPY caution light go out? when the canopy actuating cylinder is fully retracted and the ball lock engaged (with the canopy in the closed and locked position)
There are ____ normal canopy system pressure gauges. 2
Where are the 2 normal canopy system pressure gauges located? one is in the forward cockpit on the lower left side of the center console, and the other in the nosewheel well on the pressure module
What does the canopy jettison and auxiliary release air pressure gauge monitor? the two canopy jettison bottles and one auxiliary release air bottle
Where are the emergency canopy jettison system nitrogen reservoirs (air bottles) located? mounted on the left-hand bulkhead of the nosewheel well
What is the capacity of the forward emergency canopy jettison air bottle? 200 cubic inches
What is the capacity of the forward emergency canopy jettison air bottle? 150 cubic inches
How many M99 cartridges are used in the mergence jettison system? 4
How many M53 initiators (booster) on aircraft not modified by AFC 763 are there? 6
How many M53 initiators (booster) on aircraft modified by AFC 763 are there? 3
The M53 initiator is actuated by pressure at approximately _____ from M99 initiator. 500 psi
The pneumatic vent check valve closes at what psi during the jettison cycle? 25 to 80 psi applied
At what psi will the pneumatic vent check valve open? < 25psi
Where is the canopy seal control valve located? on the forward bulkhead of the top deck, directly behind the top deck relay box
Engine bleed air enters the canopy seal control valve at what psi? 15 to 265 psig
The high pressure inlet of the canopy seal control valve has an orifice of ____ diameter, restricting the flow rate to a minimum of ____ and a maximum of ____ at ____ inlet. .018-inch, .05lb/min, .15lb/min, 265psig
The bleed air entering the cabin seal control valve is reduced to a pressure of ____ to ____ by the pressure regulator. 13 to 19.5 psig
The relief valve built into the canopy seal control valve vents pressure within the seals in excess of ____. 24psig
The relief valve built into the caopy seal control valve begins to open at a minimum of ____and reseats at a minimum of ____. 20psig, 17.5psig
Where is the canopy ground test switch located? behind the canopy seal ground test switch access panel on the left engine inlet duct
Where is the nutcracker weight on wheels switch located? left main landing gear
Created by: Dene14
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