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H-60M Blackhawk > 60M Aircraft (Ch2) > Flashcards

60M Aircraft (Ch2) Flashcards

1
Q

Describe the UH-60M (2.2)

A

A twin turbine engine, single rotor, semimonocoque fuselage helicopter.

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2
Q

Primary and secondary mission of the UH-60M (2.2)

A

Primary mission capability of the helicopter is
tactical transport of troops, supplies, and equipment.

Secondary missions include training, mobilization, development
of new and improved concepts, support of
disaster relief, and command and control

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3
Q

What is the fuselage width? (Fig 2-2)

A

10’ 1” (at position lights)

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4
Q

What is the stabilator width? (Fig 2-2)

A

14’ 4”

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5
Q

What is the fuselage width with external fuel tanks installed? (Fig 2-2)

A

21’ 0”

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6
Q

What is the ground clearance of the external fuel tanks? (Fig 2-2)

A

3’ 9.5”

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7
Q

What is the diameter of the main rotor? (Fig 2.2)

A

53’ 8”

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8
Q

What is the diameter of the tail rotor? (Fig 2.2)

A

11’

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9
Q

What is the clearance of the tail rotor? (Fig 2.2)

A

6’ 7”

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10
Q

What is the clearance of the main rotor at the nose? (Fig 2.2)

A

7’ 7” when stationary

9’ 5” when moving

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11
Q

What is the turning radius? (Fig 2-3)

A

41’ 8”

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12
Q

At what angle is the tail rotor canted? (Fig 2-2)

A

20 degrees

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13
Q

All three landing gear struts on the Blackhawk have how many stages? (2-7)

A

2

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14
Q

The main landing gear struts on the Blackhawk can withstand how much force for the first stage? (2-7)

A

10 feet per second (4Gs)

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15
Q

The main landing gear struts on the Blackhawk can withstand how much force for the second stage? (2-7)

A

39 feet per second (11.25Gs)

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16
Q

Troop seats are meant to accommodate soldiers of what weight? (2.10.3)

A

110-240 lbs (including equipment)

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17
Q

Fuel is supplied to the APU from which fuel tank? (2.64.4)

A

Left main tank

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18
Q

Each fuel tank holds how many gallons of fuel?

A

180 gal

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19
Q

The low fuel indicator comes on when how much fuel is remaining in a tank? (Tab 2-3)

A

Approx 172 lbs (about 25 gal or 15%)

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20
Q

The service platforms for the engines can support how much weight? (2.81l)

A

250 lbs

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21
Q

The main engine requires how much oil? (2-23)

A

7 qts

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22
Q

The APU requires how much oil? (Tab 2-11)

A

3 qts

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23
Q

The main transmission requires how much oil? (Tab 2-11)

A

7 gal

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24
Q

What is the settling time for Jet fuel? (Tab 2-11.5)

A

1 ft/hr

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25
The main rotor should be tied down for winds greater than (2.92.2)
45 kts
26
TGT stands for (2.27.1.4)
Turbine Gas Temperature
27
Ng stands for (2.27.1.3)
Gas Generator Speed
28
Np stand for (2.27.1.6)
Power Turbine speed
29
Nr stands for (2.27.1.6)
Rotor speed
30
Q stands for (2.27.1.5)
Engine torque
31
How is hot/cold determined when reading the APU oil dipstick? (2.85)
Touch
32
Approx how long does the accumulator require to recharge? (2.65)
90 seconds
33
Pitch controls movement in what direction?
Nose up or down
34
Roll controls movement in what direction?
Side to side
35
Yaw controls movement in what direction?
Nose left or right
36
Collective controls movement in what direction?
Up or down
37
The mechanical mixing unit controls what four combined movement functions? (2.31.3)
Collective to Pitch Collective to Roll Collective to Yaw Yaw to Pitch
38
What is affected by the boost servo? (2.32.6)
Collective, Yaw, Pitch (Reduces control forces within the cockpit)
39
What are the three pilot assist servo systems? (2.32.5)
Boost, SAS, Trim
40
What is affected by SAS? (2.33.3)
Pitch, Roll, and Yaw (enhances dynamic stability and turn coordination)
41
What is affected by Trim? (2.33.4)
Pitch, Roll, Yaw, Collective (maintains position of the collective, cyclic, and pedals)
42
What does the Flight Path Stabilization (FPS) do? (2.33.5)
Maintains helicopter pitch and roll attitude, airspeed and heading during cruise flight
43
Primary and secondary mission of the HH-60M (2-2)
Primary mission capability of the helicopter is MEDEVAC. Secondary missions include transport of medical teams, deliver medical supplies, and provide support for combat search and rescue (SAR) missions.
44
What is the height of the aircraft? (Fig 2-3)
12' 4" (main rotor mast) 16' 1" (rail rotor)
45
How long is the wheelbase of the aircraft? (Fig 2-3)
29'
46
What does each WoW switch operate? (2-7)
Left WoW Switch - Right WoW Switch - External Stores Jettison
47
The right cabin door can be opened for no more than how long with the ECS operating? (2-9)
1 minute
48
In a crash exceeding ___ Gs, both fire extinguishers are discharged into both engine compartments (2-11)
10 Gs
49
What are the limitations of the fire suppression system with no AC power? (2-11)
Cannot discharge main extinguisher, only reserve Cannot discharge into Engine #2 compartment
50
What is the EDECU?
Enhanced Digital Engine Control Unit - controls the electrical function of the engine and transmits operational information to the cockpit
51
What is the EICAS?
Engine Instrument Caution/Advisory System -
52
Fuel Low Cautions appear with how much fuel remaining in a tank?
Approx 172 pounds (25 gal)
53
What are the components of the hydraulic system?
three hydraulic pump modules, two transfer modules, a utility module, three dual primary servos, one dual tail rotor servo, four pilot-assist servos, an APU accumulator, an APU hand pump, a rotor brake, and a servicing hand pump
54
T/F - All three hydraulic pumps are identical and interchangeable?
True
55
When does and what does the #1 hydraulic system operate?
Pump operates with rotors turning, and supplies the first stage of all primary servos and the first stage of the tail rotor servo.
56
When does and what does the #2 hydraulic system operate?
Operates with the rotor turning, supplies the second stage primary servo and the pilot-assist servos.
57
What does and when does the backup pump operate?
Operates on AC power. The backup hydraulic pump system supplies emergency pressure to the No. 1 and/or No. 2 hydraulic systems. Supplies pressure to the No. 2 stage of the tail rotor servo in case of a loss of pressure in the first stage of the tail rotor servo. It also provides a hydraulic pressure for automatic recharging of the APU start system accumulator.
58
At what pressure does the hydraulic system operate?
3000 psi
59
Describe the powertrain of the aircraft.
Inputs from two engines, a main transmission, intermediate gear box, tail gear box, and connecting drive shafts
60
What is the input module?
Provides the first gear reduction between engine and main module, and allows engine disengagement during autorotation or a failed engine
61
What is the accessory module?
Provides mounting and drive for an electrical generator and a hydraulic pump, and houses the rotor speed sensors
62
What is the main module?
Contains the necessary gearing to drive the main rotor and tail rotor systems
63
What is the rotor brake system for?
Holds the rotors stationary during engine startup with engines at IDLE (450-650 psi), and stops the rotors in 12-18 seconds at 150-180 psi when below 40% NR
64
Power should not be removed from the ECS system unless it has been off for at least how long?
1 minute
65
ECS power is automatically interupted when what events occur?
Hoist power turned on or a single generator failure
66
What is the pirmary source of power for the aircraft?
115/200V AC power from generators
67
How is emergency electrical power supplied to the aircraft, and what does it power?
Emergency AC power is provided by the APU generator. The APU generator is capable of supplying all flight-essential loads. In addition, the APU generator can supply power to the blade deice system if one main generator should fail. Two 24V DC 5 ampere-hour batteries provide secondary or emergency dc power
68
Describe the AC power system
Three phase, 115/200 vac, 400 Hz. Each system contains a 30/45 or 40/60 kVA generator mounted on and driven by the transmission accessory gear box module, a current transformer, a generator control unit, and current limiter, all of which are interchangeable.
69
What is the minimum accumulator pressure required for APU start?
2800 psi
70

H-60M Blackhawk (12 decks)

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