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3E052

Power Pro Vol 4

QuestionAnswer
When an aircraft nose wheel engages the webbing on an MA–1A arresting barrier, this action triggers a steel cable to engage the aircraft’s main landing gear.
Which components of the MA–1A arresting barrier provide a certain amount of slack for the arresting cable? Deck hooks.
On an MA–1A arresting barrier, the arresting chain is doubled after the first 90 feet.
Which component of the MA–1A arresting system is used to pre-tension the hook cable? Pre-tensioning pad.
On the MA–1A arresting barrier compressor, what is the normal air pressure stored in the accumulators? 1,500 psi.
When an aircraft engages the pendant on an E–5 arresting system, tension increases rapidly and causes the shear pins to break.
Which is not a factor in determining the energy-absorbing capacity of the BAK–9 aircraft arresting gear? Brake type.
What is the rewind time of the BAK–9 aircraft arresting gear with a 950-foot runout? 3.5 minutes.
Which component of the BAK–9 hydraulic system supplies the static pressure to the system? Air-oil accumulator.
On the BAK–9 hydraulic system, the repeated cycling of the shuttle valve from the ON position to the OFF position moves fluid from the accumulator to the reservoir.
What component on the BAK–9 hydraulic system supplies the hydraulic fluid to the main hydraulic pump through the pump suction line? Gravity fluid reservoir.
What component on the BAK–9 hydraulic system modulates the fluid pressure in the main hydraulic pump circuit? Cam control valve.
What transmits power through a fluid coupling and gear reducer to rewind the BAK–9 aircraft arresting system? High torque electric motor.
To avoid obstructing landing aircraft, the BAK–15 arresting system can lower the net in about three seconds.
On a BAK–15, what stretches during an arrestment, allowing the arrestment load to be equally distributed among the elementary nets? Shock absorbers.
On a BAK–15, what holds the net upright and centered on the runway in its arrestment position? Suspension system
What component of a BAK–15 arresting system holds the bottom of the net in place on the runway? Anchor straps.
On a BAK–15, what is used to tighten or loosen the net tensioning wire, thus determining the height of the net during an arrestment? Lever chain hoist.
When the BAK–15 stanchions are elevated, they are held securely in the upright position by the over-center locking arm mechanism.
When an aircraft engages the BAK–15 arresting system, what causes the net to release from the stanchions? Shear link devices.
What size is the pendant on a textile brake system? 1¼ inches.
What protects the yoke on a textile brake system? Neoprene cover.
When an aircraft engages the textile brake arresting system, the kinetic energy of the aircraft is absorbed when the two tearing straps separate.
In a bidirectional configuration of the textile brake arresting system, how many braking modules are on each side of the braking stage unit? 10.
How many rubber support blocks does the BAK–14 system have for supporting the pendant two inches above the runway surface? Either 14 or 20.
How is the BAK–14 support system pendant raised above the runway? Torsion springs.
Which component of the BAK–14 support system contains the operating means to raise and retract the support block? Support box.
Which component of the BAK–14 aids in venting the pneumatic system? Quick-exhaust valve.
On the BAK–14 aircraft arresting support system, what item on each support box arm indicates whether the arm is up or down? Mercury-type limit switches.
What is the purpose of the box heater in a BAK–14? Protect the air cylinder from freezing moisture.
If a Type-H aircraft support system is correctly configured, the support blocks will be approximately eight feet apart.
What houses the hydraulic power unit, sump pump, electrical panel, and heating resistors on a Type-H support system? Motor driver pit.
What is the function of the electric motor in the Type-H support system’s motor drive unit? Drive the hydraulic fluid from the reservoir to the jack.
In a Type-H aircraft arresting support system, what component pulls the support arm and support block back into the lowered position when the ramp moves to the low spot? Drawback cable.
What controls the heaters in a Type-H aircraft arresting system? Thermostats.
For rewind operation, which component of the BAK–12 rewind clutch system connects the rewind sprocket to the reel assembly shaft? Friction clutch.
What is the ratio of the gear reducer that is attached to the fluid coupling used in the rewind system of the BAK–12 aircraft arresting system? 15-to–1.
Why do we need to know the engaging velocity of an arrestment that used the BAK–12 system? To compute the tape maintenance and replacement schedules.
In the BAK–12 arresting system, the hydraulic pressure gage is used for hydrostatic testing and synchronization.
What component drives the hydraulic system pump on a BAK–12? Tape reel.
On the BAK–12, what eliminates tape twist caused by the rolling action of the pendant supports? Tire casing.
What size pendant is typically used on operational installations of the BAK–12? 1¼-inch.
How long does it take to install a BAK–12 in its expeditionary configuration? 8 hours.
On the BAK–12, where does a pendant normally show necking down? Around the end of the pendant.
How many months can the BAK–12 pendant be in service before replacement is required? 36.
How can you tell if the tape reeving is wrong on a BAK–12? You cannot see the bitter end.
During which inspection are the rewind engines on the BAK–12 arresting system run for 10 to 15 minutes? Daily.
Why should you inspect the cam index during a BAK–12 daily inspection? To make sure the center of the cam follower lines up with the zero mark.
During the weekly inspection of a BAK–12 aircraft arresting system, you should bleed the brakes while cycling the brake selector off and on until you no longer see air bubbles or surges.
During which inspection do you drain the rewind engine’s exhaust moisture trap on the BAK–12 arresting system? Weekly.
When checking the oil level in the BAK–12, you should place the fluid coupling level in what position? 11 or 1 o’clock.
When you are synchronizing a BAK–12 Wisconsin engine, to what revolutions per minute (rpm) do you adjust the pump? 780.
On a BAK–12 arresting system, why do we need to crop the nylon purchase tape every 6 months? Exposure to sunlight causes the tape to lose strength.
Created by: rentedred
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