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Ruof Flashcards

1
Q

Why does the E-5 barrier require the use of pretensioning springs?

A

To allow aircraft to cross the pendant cable without shearing the pins

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2
Q

What effect does burying the arresting chain have on the performance
of the E-5 barrier?

A

No effect

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3
Q

When can additional shots, weights or both be added to the standard configuration of an E-5 barrier?

A

If the aircraft weighs over 20,000 pounds

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4
Q

Why is the E-5 barrier only used in the over run?

A

Due to the extensive amount of time it takes to reset the barrier

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5
Q

Which statement below provides one of the reasons for the installation of a BAK-14?

A

To avoid damage to the cable from heavy aircraft

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6
Q

What purpose does the support box heater element serve on the BAK-14?

A

To keep the air cylinder and other mechanical parts from freezing

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7
Q

When do the compression springs push on the toggle links?

A

When the air pressure is removed from the air cylinder

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8
Q

For which configuration of the BAK-14 would 20 support boxes be installed?

A

Runways with a width of 200’ or 300’

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9
Q

Which of these will be accomplished on a daily inspection?

A

Verify system air pressure

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10
Q

At what inspection interval should the air filter and silencer be cleaned?

A

Semi-annually

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11
Q

When should the guide rods be lubricated?

A

Monthly

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12
Q

When should the trough assemblies, hand hole, and pull box be inspected?

A

Daily

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13
Q

For what purpose does the test strap assembly get removed periodically?

A

Strength testing.

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14
Q

Which component gets installed when tail hook equipped aircraft utilize the airfield?

A

Net Interconnect

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15
Q

Why is the BAK-15 considered an emergency barrier and only installed
in the overrun?

A

Due to of long reset times and high cost of component replacement

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16
Q

Which of the following is the proper configuration for tail hook equipped aircraft?

A

Net, Stanchion, Energy Absorber, Pendant Cable, Interconnect and Pretension Assembly

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17
Q

What assembly is checked for centerline, elevation and alignment during a daily inspection?

A

Net Assembly

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18
Q

Why do you verify the SAFE/ARM switch is in the ARM position during a daily inspection?

A

To ensure the Tower can raise the stanchion system as required

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19
Q

Why should care be taken around pressurized hydraulic systems or cables under tension?

A

Because severe injury to body can occur

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20
Q

During the monthly inspection the stanchion hydraulic components are inspected for?

A

Leaks

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21
Q

What component separates the tensioning assembly from the braking assembly during an arrestment?

A

Shear link

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22
Q

The Textile Brake arresting system uses a _____ inch pendant cable.

A

1 1/4 inch

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23
Q

How many brake modules are used for each stage when configured for uni-directional?

A

9

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24
Q

What happens if the aircraft exceeds the capacity of stage 1 of a textile brake system?

A

Stage 2 will engage absorbing the kinetic energy

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25
When support discs are properly spaced, what should the effective pendant height be?
2 1/2 inches above the runway surface
26
How must the yokes be positioned when ensuring proper pendant tension?
Equal distances from the runway centerline
27
Which inspection item will be performed on an annual basis?
Verify the torque of the anchor bolts
28
If obstacles in the area are swept by the straps, what could occur?
Prohibit proper kinetic energy absorption
29
What is the main function of the electric motor on the Type-H cable support system?
Drive the hydraulic drive unit to either push or pull the mechanical transmission assembly
30
What signals the system is fully raised or retracted and causes the electric motor to be de-energized?
Limit switches
31
In order to raise the ramps on the Type-H system, what rotates in the opposite direction?
Electric motor
32
In the event of a power failure, the ability to raise and lower the pendant cable is achieved by?
Manual hand pump
33
The Type-H cable support system can be adapted to use which size pendant cable?
1”
34
How many support blocks are in the standard configuration of the Type-H?
14
35
Why can the Type-H be configured with any cable energy absorber?
Because its purpose is to solely raise or lower the pendant cable
36
Which is an optional runway spacing configuration of the Type-H?
150-300ft
37
When performing a daily inspection requirement, a technician would?
Check the condition of the support blocks
38
When the Type-H reaches 10 years in service, which of the following maintenance actions is a requirement?
Complete overhaul of the system
39
During which maintenance interval is the transmission loop tension checked?
Monthly
40
When checking the hydraulic fluid in a monthly inspection, a drop of _____ with respect to maximum highest level indicates an external leak.
3/8
41
What effect does the cam control valve have on the brakes during arrestment of an aircraft?
Restricts hydraulic fluid flow increasing pressure
42
What happens when the shuttle valve is placed in the ON position?
Applies static pressure to the brakes
43
If hydraulic fluid pressure increases inside the shuttle valve, which of the following will occur?
The valve moves to the OFF position
44
If hydraulic system pressure exceeds the safe maximum valve during an arrestment, what will occur?
The pressure relief valve opens, relieving excess pressure
45
The purpose of the tape deflector sheaves in a permanent install is to
To bring the purchase tape to the higher level of the fairlead tube
46
In an expeditionary install the energy absorber and fairlead beam are anchored to a(n)
Deadman assembled on site
47
If the installation of the BAK-12 is going to last over a year then,
The energy absorber can use either permanent or semi-Permanent
48
When determining configuration of the BAK-12, which of the following factors is taken into consideration?
Aircraft types
49
When performing a daily inspection, what check must be completed?
Inspect cam for proper index setting
50
During a weekly inspection, what should the tape connector be inspected for?
Correct reeving and security of hardware
51
What is required when a BAK-12 reaches its 10 year mark?
Complete overhaul
52
After an arrestment, what must the tape be inspected for?
Correct twist inside fairlead tube assembly
53
The use of a 66 inch purchase tape storage reel on the MAAS allows for what capability?
Enables a 990 foot runout
54
Why does a MAAS set come with a 90 foot and 153 foot pendant cable?
To support different runway widths
55
In the event of an accidental vehicle separation, what MAAS component activates the hydraulic braking system?
Emergency brake system
56
What allows the use of wide bodied aircraft on runways with a MAAS installed?
Setback kits and additional equipment
57
During site planning for the MAAS, if the soils fall below a 7 CBR value what else is planned?
The installation of a deadman
58
If the plan is to install the MAAS on prepared foundations then it must meet the standards of which organization?
American Society for Testing and Materials
59
During installation planning for the MAAS the site should permit usable portion of the runway in the event of a(n)?
Emergency
60
During site planning for the MAAS what dictates site location?
Operational need
61
Which MAAS uni-directional installation requires the removal of a tire?
Concrete
62
In order to install the MAAS bi-directionally on concrete, install three anchor plates and?
Remove two tires - one from each MAAS
63
During the soil uni-directional installation of the MAAS how is the position of the trailer determined?
Cable length + 15
64
When installing the earth anchor stakes which degree must be maintained for a uni-directional installation?
15 degrees
65
During monthly inspection of the MAAS for what reason are the sheaves inspected for freedom of rotation?
Because friction will cause damage to the tapes
66
During the daily inspection the drive chains are inspected for
Cleanliness and lubrication
67
Why inspect the cam for the proper 15° setting during the daily inspection of the MAAS?
Improperly set cam may not stop the aircraft in time
68
When performing preventative maintenance on the MAAS the tape gets cropped every?
6 months
69
The centerline of the lightweight fairlead beam sheaves should project at least 1 foot above the runway because?
The runway surface will interfere with the tape path
70
The acceptable California Bearing Ratio for installing the lightweight fairlead beam is?
7
71
Why can the ground slope not exceed 8% when installing the lightweight fairlead beam?
Because tape tracking problems with the sheaves will occur
72
The installation site for the lightweight fairlead beam should be relatively flat and extend even on both sides to
Keep grading to a minimum
73
When performing an on-runway installation a minimum of ____ feet of touchdown space must be provided?
500
74
The slope of the ground should not exceed ____ percent between the MAAS and the MRES during site selection.
8
75
Why must tape stack height be taken into account when selecting a site for the MRES?
Because insufficient runout could be a possible danger to the aircraft
76
Why must the centerline of the runway sheaves project above the surface of the runway?
To protect the tapes from damage during arrestment
77
During a daily MRES inspection, the front and rear sheave weldments will be checked for?
Burrs and sharp edges
78
During a monthly MRES inspection, what should the brake lines and fittings be inspected for what?
Leaks
79
When the MRES is in storage which of the following periodic inspections is performed?
Semi-annual
80
How often are the wheel bearings lubricated on the MRES?
Every 365 days

REVOL NROP (4 decks)

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