Main Rotor Drive System Flashcards
What is the primary function of the Main Rotor Drive System?
A) Transfer electrical power to the helicopter systems
B) Transfer mechanical power to drive the main and tail rotors
C) Provide hydraulic power for rotor movement
D) Control the altitude of the helicopter
B) Transfer mechanical power to drive the main and tail rotors
At what speed does the Main Rotor Drive Shaft operate?
A) 5300 rpm
B) 20841 rpm
C) 256 rpm
D) 9537 rpm
C) 256 rpm
Which component transfers power from the engine to the Main Gearbox (MGB)?
A) Tail Rotor Assembly
B) Engine Shaft and Gimbal
C) Lubrication Pump
D) Upper Deck Drains
B) Engine Shaft and Gimbal
The Main Gearbox (MGB) is responsible for which of the following?
A) Reducing engine speed and transferring power to the rotors
B) Generating electrical power for the cockpit
C) Controlling hydraulic pressure in the rotor system
D) Maintaining the aircraft’s center of gravity
A) Reducing engine speed and transferring power to the rotors
What is the function of the Freewheel in the MGB?
A) Reduces engine speed before transmitting power
B) Allows disconnection of the rotor from the engine in case of malfunction
C) Controls hydraulic pressure for the main rotor
D) Provides additional lubrication to the gearbox
B) Allows disconnection of the rotor from the engine in case of malfunction
The MGB lubricating system contains how much oil?
A) 2.1L
B) 20L
C) 44L
D) 55L
C) 44L
What is the purpose of the Rotor Brake System?
A) To slow down and stop the rotor when the helicopter is on the ground
B) To provide additional lubrication to the gearbox
C) To transfer power from the tail rotor to the main rotor
D) To generate hydraulic pressure
A) To slow down and stop the rotor when the helicopter is on the ground
Which component is part of the Rotor Brake System?
A) Freewheel Assembly
B) Chip Detector
C) Rotor Brake Power Module (RBPM)
D) Slanted Shaft
C) Rotor Brake Power Module (RBPM)
How is the Remote Accessory Gearbox (RAGB) powered?
A) Only by the Main Gearbox (MGB)
B) By both the MGB and the Auxiliary Power Unit (APU)
C) Independently, using an external power source
D) By the rotor brake system
B) By both the MGB and the Auxiliary Power Unit (APU)
What happens in case of a failure of the oil cooling fan?
A) The helicopter must land immediately
B) The cooling system stops working entirely
C) Natural air flow continues to cool the system during forward flight
D) The gearbox will seize within 5 minutes
C) Natural air flow continues to cool the system during forward flight
What does the Chip Detector do?
A) Detects excessive rotor speed
B) Measures oil pressure in the MGB
C) Identifies metal particles in the lubricating oil
D) Controls rotor blade angles
C) Identifies metal particles in the lubricating oil
Where is the Rotor Brake Control Box (RBCB) located?
A) Under the cockpit control panel
B) On the right-hand side of the tail rotor assembly
C) On the central left side of the cabin roof
D) Inside the Remote Accessory Gearbox
C) On the central left side of the cabin roof
What is the function of the SARIB system?
A) Provides additional thrust to the main rotor
B) Reduces vibrations in the rotor system
C) Increases cooling efficiency of the oil system
D) Controls hydraulic pressure for the tail rotor
B) Reduces vibrations in the rotor system
The MGB input assembly reduces the engine speed from 20841 rpm to:
A) 9537 rpm
B) 5300 rpm
C) 12072 rpm
D) 256 rpm
A) 9537 rpm
What is the function of the accelerometers in the Main Rotor Drive System?
A) Detecting metal particles in the oil
B) Measuring temperature inside the MGB
C) Providing input for vibration analysis
D) Controlling power distribution to the rotors
C) Providing input for vibration analysis
The Rotor Brake System has how many operational modes?
A) 2
B) 3
C) 4
D) 5
D) 5
The RAGB lubricating system contains how much oil?
A) 1.5L
B) 2.1L
C) 10L
D) 15L
B) 2.1L
What component is responsible for detecting excessive heat in the rotor brake system?
A) Freewheel Detector
B) Temperature Sensor
C) Hydraulic Pump
D) Oil Pressure Switch
B) Temperature Sensor
Which of the following is NOT a function of the MGB?
A) Transferring power to the main rotor
B) Reducing engine speed
C) Controlling the flight altitude
D) Providing support for the accessory gearbox
C) Controlling the flight altitude
How long can the MGB operate after an oil loss?
A) 10 minutes
B) 20 minutes
C) 30 minutes
D) 60 minutes
C) 30 minutes
The Remote Accessory Gear Box drives:
1AC generator, 1 DC generator arotor index drive pad and an ECS compressor
1AC generator, 1 DC generator, an ECS compressor cockpit and 1 hydraulic pump.
1 AC generator, 1 DC generator, an ECS compressor cabin and 1 hydraulic pump
1AC generator, 1 DC generator, an ECS compressor cockpit and 1 hydraulic pump.
The two input modules provides drive pad for:
2 oil pumps
2 hydraulic pumps
2 ECS compres sors
2 hydraulic pumps
The MGB oil system
Integrates two different oil pumps
Is fully inte grated in the MGB housing
Has a capacity of 54 liters of oil
Is fully inte grated in the MGB housing
The MGB oil system
Integrates two different oil pumps
Is fully inte grated in the MGB housing
\ Has a capacity of 54 liters of oil
The NR2 speed sensor provides 2 analogue signals to:
NR/2NF stand by indicatot pilot, PMC2, FCS and APU
NR/2NF stand by indicator co-pilot, PMC2, FCS and APU
NR2NF stand by indicator pilot, PMC2, FCS and PDU
NR2NF stand by indicator pilot, PMC2, FCS and PDU
