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WorksheetsUH-60A|Powertrain and rotors
Total questions: 108
Worksheet time: 3hrs 42mins
Name
Class
Date
1.
The UH-60 transmission consists of ____________ modules
a)
3
b)
5
c)
4
2.
Name UH-60 transmission modules.
a)
Main module
LH+RH input modules
LH+RH accessory modules
b)
Main module
Input module
Accessory module
c)
Main module
LH+RH Input modules
Planetary module
3.
UH-60 transmission can operate with no oil for ____________ at cruise flight
a)
30 minutes
b)
45 minutes
c)
60 minutes
4.
Indicate LH input module
a)
1
b)
2
c)
3
5.
Indicate LH accessory module
a)
1
b)
4
c)
7
6.
Indicate main generator
a)
6
b)
5
c)
7
7.
Indicate hydraulic pump
a)
6
b)
5
c)
7
8.
Where would you locate freewheeling unit?
a)
It is integral part of the XMSN main module
b)
It is integral part of each Input module
c)
It is integral part of engine accessory gearbox
9.
The complete transmission has ________stages of reduction
a)
2
b)
3
c)
4
10.
The intermediate gearbox ___________________
a)
Only changes the angle of drive
b)
Only reduces the drive speed
c)
Reduces the drive speed and changes the angle of drive
11.
The main module of the transmission is a ______________-stage reduction gearbox
a)
3
b)
1
c)
2
12.
How many oil pumps are integrated into the XMSN design?
a)
3
b)
1
c)
2
13.
The XMSN low oil pressure switch is located ______________
a)
on the LH accessory module
b)
on the RH accessory module
c)
on the bottom of the main module
14.
The main rotor speed sensor is located ________________
a)
on the LH accessory module
b)
on the bottom of the main module
c)
on the RH accessory module
15.
How do you check the XMSN oil level?
a)
Through a sightglass
b)
Through a capacitive probe
c)
With a dipstick
16.
When are you supposed to use the HOT side of the dipstick to check XMSN oil level?
a)
Within 15 minutes after shut-down
b)
Within 30 minutes after shutdown
c)
Immediately to 2 hours after shutdown
17.
The XMSN oil pressure _________________
a)
is constant at around 120 psi
b)
is constant at around 25 psi
c)
may fluctuate when the helicopter is known to be in nose-up attitude
18.
XMSN oil pump operate __________________
a)
in series, driven by the XMSN
b)
independently on the XMSN
c)
in parallel, driven by the XMSN
19.
When the pop-out indicator on the XMSN oil filter is extended ______________
a)
the oil filter has already been bypassed
b)
the oil filter must be replaced in order to be oable to re-set the indicator
c)
the indicator may be re-set once
20.
The XMSN pop-out indicator will ______________ when the oil is cold and thick
a)
not extend
b)
may extend
c)
will always extend
21.
The XMSN oil filter is a ____________ - stage oil filter.
a)
single
b)
2
c)
3
22.
When the first stage of the XMSN oil filter is bypassed, ______________
a)
second stage still retains some filtering capacity
b)
contaminated oil circulates through the systém
c)
the oil will no longer by cooled
23.
What happens when the XMSN oil is cold (below 71 centigrades)?
a)
XMSN oil filter pop-out indicator extends because of increased pressure
b)
Oil is routed through the engine oil to fuel heater to warm up
c)
Oil is routed away from the XMSN oil cooler by the thermostatic control bypass valve
24.
How many electrical magnetic chip detectors are monitoring the transmission?
a)
3
b)
5
c)
4
25.
Is there any XMSN electrical magnetic chip detector with a fuzz burn capability?
a)
No, only engine chip detectors do have such a capability
b)
Yes, all XMSN chip detectors do have the fuzz burn capability
c)
Yes, the XMSN main module chip detector has the capability
26.
Why is the XMSN main module chip detector connected to a 30 sec delay?
a)
To allow for fuzz burn or particles wash-away prior to triggering a caution
b)
To allow all of the rest of XMSN chip detectors to detect fuzz or chips as well
c)
There is no such a time delay
27.
How is the XMSN oil cooling assured for?
a)
A free air flowing around the XMSN is enough to cool down the XMSN and oil
b)
The XMSN oil is cooled through liquid-to-liquid oil cooler
c)
The XMSN oil is cooled in a fan and oil cooler assembly external to the XMSN
28.
The XMSN oil cooler fan is driven by _______________
a)
tail rotor drive shaft
b)
electrical motor
c)
dedicated
29.
What happens when the XMSN oil cooler becomes clogged?
a)
The oil flow stops
b)
The oil will bypass and will flow uncooled
c)
The oil will bypass and will be cooled in an back-up cooler
30.
The MAIN XMSN OIL PRESS caution is triggered by the ______________
a)
XMSN oil pressure transmitter
b)
XMSN oil pressure indicator
c)
XMSN oil pressure switch
31.
The main XMSN oil pressure indicator is ________________
a)
a VIDS indicator on the PDU
b)
a VIDS indicator on the CDU
c)
a analogue gauge standalone dial indicator
32.
The main XMSN oil temperature switch is systematically located _________________
a)
downstream of the oil cooler
b)
upstream of the oil cooler
c)
in the XMSN oil sump
33.
The main XMSN oil temperature sensor is systematically located _________________
a)
downstream of the oil cooler
b)
in the XMSN oil sump
c)
upstream of the oil cooler
34.
The main XMSN oil pressure indicator is ________________
a)
a VIDS indicator on the CDU
b)
a VIDS indicator on the PDU
c)
a analogue gauge standalone dial indicator
35.
Is the electrical magnetic chip detector fuzz burn capability always active?
a)
Yes, this feature is active anytime the systém receives electrical power
b)
No, this feature is de-activated when oil temperature is below 140 centigrades
c)
No , this feature is de-activated when the oil temperature is above 140 centigrades
36.
The XMSN chip detection systém is powered with______________
a)
115 VAC power
b)
DC power
c)
26 VAC power
37.
How many cautions are available for XMSN chip detection systém?
a)
1 caution light for all 5 detectors
b)
3 caution lights for LH, RH and center chip detectors
c)
5 caution lights for 5 chip detectors
38.
With respect to the XMSN chip detection systém buil-in test (assuming no faults):
a)
All related caution lights will come up immediately after switching on the battery switch, except for the CHIP MAIN MDL SUMP, which comes on after 30 seconds
b)
All related caution lights will come up immediately after switching on the battery switch and will last for 45-70 seconds, including the CHIP MAIN MDL SUMP, which extinguishes after 30 seconds
c)
All related caution lights will come up immediately after switching on the battery switch and will last for 45-70 seconds
39.
Where is the locking portion of the Gust Lock systém located?
a)
Inside the XMSN main module
b)
On the tail rotor shaft, just fwd of the oil cooler fan
c)
At the tail rotor také-off flange on the main XMSN
40.
The Gust Lock handle is located _______________
a)
In the cockpit on the aft of the central pedestal
b)
In the cockpit central ceiling
c)
In the cabin ceiling, left aft side of the main XMSN
41.
The gust lock is designed to withstand ________________
a)
only forces acting on main rotor blades in windy conditions
b)
torque from one engine at idle power setting
c)
torque from two engines at idle power setting
42.
How does the crew know the gust lock is engaged?
a)
Crew has to visually verify the gust lock is disengaged during the pre-flight inspection
b)
The rotor does not turn upon starting an engine
c)
There is a GUST LOCK caution available on the Caution and Advisory Panel
43.
The gust lock is engaged by _______________
a)
pulling the gust lock handle down
b)
pushing the gust lock handle up
c)
pushing the GUST LOCK switch ON in the overhead panel
44.
May the gust lock be engaged during dual-engine operation?
a)
No
b)
Yes
45.
May the gust lock be disengaged with the engine running?
a)
Yes
b)
No
46.
UH-60 tail rotor drive shaft comprises of ______________
a)
4 shafts
b)
4 sections of shafts
c)
3 sections of shafts
47.
UH-60 tail rotor drive shaft comprises of ______________
a)
5 sections of shafts
b)
6 shafts
c)
3 sections of shafts
48.
Can UH-60 tail rotor drive shafts be interchanged?
a)
Yes, any shaft is interchangeable for a shaft from another section
b)
No, every shaft is different and not interchangeable
c)
Onle the 3 shafts forming Iind section are interchangeable
49.
What are flexible couplings within the tail rotor drive shafting doing?
a)
Maintain alignment and connect shaft segments to each other
b)
Secure drive shafts to the structure
c)
Connect hoses for lubricating oil to drive shaft bearings
50.
When pre-flighting flexible couplings, what shall we be checking for?
a)
Visible bubble in the oil
b)
Buckling, cracks and security
c)
Cleanliness and lubrication
51.
The tail rotor shaft support bearing is filled with _____________
a)
nitrogen
b)
hydraulic fluid
c)
dampening fluid
52.
How do you tell the support bearing needs servicing?
a)
The bubble in the dampening fluid is too small
b)
The bubble in the dampening fluid is 1-2 inches large
c)
The bubble in the dampening fluid is above 2 inches
53.
How do you tell the support bearing needs replacement?
a)
The bubble in the dampening fluid is above 2 inches large
b)
The bubble in the dampening fluid is too small
c)
The bubble in the dampening fluid is 1-2 inches large
54.
The intermediate gearbox is __________________
a)
pressure lubricated
b)
oil splash lubricated
c)
grease lubricated
55.
How do you check the lubricant in the intermediate gearbox?
a)
With a dipstick
b)
Through a sightglass
c)
Opening the filler plug and verifying the oil is visible iat the bottom of the neck
56.
What indications are related to the intermediate gearbox?
a)
Chips caution and oil pressure caution
b)
Chips caution and oil temperature caution
c)
Chips caution, oil temperature cockpit indication and caution
57.
The intermediate gearbox chip detector is equipped with a fuzz burn capability. Is such a statement correct?
a)
Yes
b)
No
58.
The intermediate gearbox oil temperature switch is a _____________
a)
bi-metallic switch
b)
temperature bulb switch
c)
thermocouple switch
59.
The intermediate gearbox is __________________
a)
pressure lubricated
b)
oil splash lubricated
c)
grease lubricated
60.
How do you check the lubricant in the tail gearbox?
a)
With a dipstick
b)
Through a sightglass
c)
Opening the filler plug and verifying the oil is visible iat the bottom of the neck
61.
What indications are related to the tail gearbox?
a)
Chips caution and oil pressure caution
b)
Chips caution and oil temperature caution
c)
Chips caution, oil temperature cockpit indication and caution
62.
The tail gearbox chip detector is equipped with a fuzz burn capability. Is such a statement correct?
a)
Yes
b)
No
63.
The tail gearbox oil temperature switch is a _____________
a)
bi-metallic switch
b)
temperature bulb switch
c)
thermocouple switch
64.
Select correct statement about intermediate gearbox
a)
There are 2 separate sensors for chip detection and hi oil temperature indication
b)
Ther is one combined detector for chips and high oil temperature detection used on the gearbox
c)
Only chip detector is installed onto a gearbox
65.
Select correct statement about tail gearbox
a)
There are 2 separate sensors for chip detection and hi oil temperature indication
b)
Ther is one combined detector for chips and high oil temperature detection used on the gearbox
c)
Only chip detector is installed onto a gearbox
66.
Tail rotor design incorporates bearings to accommodate flapping and pitch change
a)
That is not correct
b)
That is correct
c)
Such statement may or may not be correct depending on the UH-60 model
67.
The tail rotor is located on the right top side of the tail rotor pylon
a)
That is not correct
b)
That is correct
c)
Such statement may or may not be correct depending on the UH-60 model
68.
What happens if both tail rotor control cables fail?
a)
Total loss of control
b)
Centering spring will position the tail rotor blades in a position that allows for trimmed flight at around 10 KIAS
c)
Centering spring will position the tail rotor blades in a position that allows for trimmed flight at around 25 and 145 KIAS, but these speeds will vary with gross mass
69.
Tail rotor blade flapping and pitch change is accommodated ____________
a)
by elastomeric bearings
b)
flexible spars
c)
roller bearings
70.
Identify the pitch change beam in the picture.
a)
1
b)
4
c)
2
71.
Identify bonding cables in the picture.
a)
1
b)
4
c)
2
72.
Identify tail rotor pitch change links in the picture
a)
1
b)
4
c)
2
73.
Identify outboard retention plate in the picture
a)
1
b)
2
c)
3
74.
Select correct statement:
a)
TR blades incorporate negative twist
b)
TR blades incorporate positive twist
c)
TR Blades are untwisted by design
75.
Tail rotor blade spars are made of _________________
a)
fiberglass roving
b)
graphite composite
c)
kevlar roving
76.
Select correct statement:
a)
The two TR spars are interchangeable
b)
The two TR spars are not interchangeable
c)
The two TR spars are a matched set and cannot be replaced individually
77.
Tail rotor de-icing is made by use of ______________
a)
bonded pneumatical mat
b)
bonded electrical heat mat
c)
electrical heaters embedded into the fiberglss blade cover
78.
What is the purpose of the tail rotor boot?
a)
That is the de-ice element of the TR
b)
The boot is the flexible element allowing for flapping and feathering of TR blade
c)
It prevents dirt and debris into the tail rotor pitch change horn
79.
What happens if the TR pitch change link (rod) breaks or fails?
a)
Affected blade will be set to 7,5 deg pitch by the forces implied by counter weights
b)
Affected blade will be set to 10,5 deg pitch by the spring assembly
c)
Affected blade will remain in whatever pitch angle it was in at the moment of the pitch change rod failure
80.
What is the role of the bifilar assembly of the MR head?
a)
It is the main support all other components of the MR are attached to
b)
It prevents MR blades from too much droop during LOW RPM ops on the ground
c)
It acts as a vibration absorber
81.
The bifilar cross is made of ______________
a)
aluminium
b)
titanium
c)
steel
82.
The main rotor hub is made of
a)
titanium
b)
aluminium
c)
steel
83.
Each of main rotor hub arms is ______________
a)
pre-coned only
b)
pre-coned and pre-lagged
c)
pre-lagged only
84.
Choose correct statement:
a)
MR hub employs four 2-section elastomeric bearings allowing blades to flap, feather and hunt
b)
MR hub employs 8 roller bearings allowing for blade flapping
c)
MR hub employs a combination of elastomeric and roller bearings to allow for blade movements
85.
What is the purpose of the MR Droop Stop?
a)
The droop stops prevent excessive blade down-flap during low rotor rpm or when the rotor stops
b)
The droop stops prevent excessive blade up-flap during low rotor rpm
c)
It acts as a vibration absorber during low RPM operation on ground
86.
Droop stops should be fully OUT at __________________
a)
52% RRPM
b)
75% RRPM
c)
70-75% RRPM
87.
When the droop stop is OUT ______________
a)
vertical movement of the MR blade is restricted for safety reasons
b)
vertical movement of the MR blade is unrestricted
c)
stopping the MR rotor is not possible for safety reasons
88.
Droop stop should be fully IN at _________________
a)
72% RRPM
b)
50% RRPM
c)
70-75% RRPM
89.
What is the purpose of MR Anti-flap restrainers?
a)
Anti flap restrainer prevents excessive blade up-flap during low or no rotor rpm
b)
Anti flap restrainer prevents excessive blade down-flap during low or no rotor rpm
c)
It acts as a vibration absorber during low RPM operation on ground
90.
MR anti-flap restrainers should be ________________ LOCK position above 35% RRPM
a)
in
b)
out of
c)
transitioning into
91.
What may happen if you increase collective pitch during MR coast-down?
a)
Nothing serious
b)
Anti-flap stops may be damaged
c)
Droop stops will move OUT more easily
92.
Beside other reasons, why shouldn't you keep the collective lever any higher than 1 inch from its full down position during start?
a)
To unload engine gas turbine
b)
Droop stops will move OUT more easily
c)
To prevent damage to the anti-flap bracket bushings
93.
MR dampers are _______________ dampers
a)
friction type
b)
elastomeric
c)
hydraulic
94.
When you see a gold band (stripe) on the damper indicator piston _____________
a)
the damper needs servicing
b)
the damper shall be replaced
c)
the damper is serviceable
95.
The main rotor blade is _______________ long
a)
over 24 feet
b)
over 8 meters
c)
just under 7 meters
96.
The main rotor diameter is
a)
48 feet
b)
just under 16 meters
c)
over 53 feet
97.
What would you check for when pre-flightitng the MR expandable pin?
a)
Pin locking force
b)
Locking nut for corrosion
c)
locking arm for positive locking
98.
Main rotor blade spar is made of __________________
a)
steel
b)
titanium alloy
c)
fiberglass and carbon composite
99.
Main rotor blade spar is __________________
a)
a hollow structure charged with nitrogen
b)
a hollow evacuated structure
c)
made of solid titanium
100.
Main rotor aft of the leading edge is made of __________________
a)
filler foam covered with aluminium alloy skin
b)
Nomex honeycomb with fiberglass skin
c)
filler foam core with nickel alloy skin
101.
What is the BIM indicator used for?
a)
To check the blade dampers for proper servicing
b)
To check the MR blade for remaining life
c)
Tocheck the MR blade spar for proper nitrogen charge
102.
Seeing yellow stripes on the BIM during pre-flight means:
a)
Structural integrity of the MR blade spar is degraded
b)
The MR blade spar is structurally not degraded
c)
MR blade spar nitrogen charge needs servicing
103.
MR pitch control rod rod ends bearings are ___________________
a)
spherical bearings
b)
spherical or elastomeric bearings
c)
elastomeric bearings
104.
What are the main parts of the swashplate?
a)
Uni-ball bearing
Pitch links
Swashplate bearing
b)
Stationary disc
Rotating disc
Pitch change links
c)
Stationary disc
Rotating disc
Swashplate bearing
105.
How do you check the swashplate bearing for wear during pre-flight inspection?
a)
Check for free play between discs
b)
Check for ratcheting in collective flight control channel
c)
Check for metal particles in extruded grease
106.
Indicate lateral link in the picture
a)
3
b)
2
c)
4
107.
What is the main purpose of the main mast extension?
a)
It raises the rotor to reduce vibrations caused by the rotor
b)
It reduces helicopter inherent instability
c)
It serves as a handling point for the helicopter with MR head removed
108.
The Uni-Ball bearing is a _________________ bearing serving as a universal joint for the swashplate
a)
roller bearing
b)
spherical
c)
ball
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