WorksheetsHelicopter Rotor Systems Quiz
Total questions: 15
Worksheet time: 3mins
What is the upward or downward movement of the rotor blades during rotation called?
Blade Flap
Blade Feather
Blade Lead
Blade Lag
What is the condition known as when helicopters with semirigid rotors experience excessive rotor flapping?
Mast Bumping
Blade Flap
Blade Feathering
What is the main disadvantage of coaxial rotors?
Increased mechanical complexity
Higher vibration
Higher aerodynamic drag
WHAT IS THE ADVANTAGE OF A RIGID ROTOR SYSTEM?
GOOD CONTROL RESPONSE
SIMPLE DESIGN, CRISP RESPONSE
SIMPLE AND EASY TO HANGAR DUE TO BLADE CONFIGURATION
NONE OF THE ABOVE
Which type of rotor system allows blades to flap together as a unit?
Rigid Rotor System
Tandem Rotor System
Fully Articulated Rotor System
Semirigid Rotor System
What is the main disadvantage of a fully articulated rotor system?
Complex design
Limited control response
High aerodynamic drag
Increased vibration
What does the term 'feathering' refer to in rotor systems?
The upward movement of blades
The rotation of blades around their pitch axis
The fore and aft movement of blades
The downward movement of blades
What is the purpose of the swash plate in a helicopter?
To control the tail rotor
To stabilize the helicopter
To convert stationary control inputs into rotating inputs
To provide lift
What is the main function of the freewheeling unit in a helicopter?
To disengage the engine from the main rotor during failure
To increase lift
To stabilize the helicopter
To control rotor speed
What is the role of dampers in a fully articulated rotor system?
To control the pitch angle
To stabilize the helicopter
To absorb acceleration and deceleration of rotor blades
To increase lift
What is the primary function of the helicopter rotor system?
To provide stability during flight
To generate lift
To control the direction of the helicopter
To reduce noise during operation
Which rotor system allows blades to move independently in the plane of the rotor disc?
Fully Articulated Rotor System
Rigid Rotor System
Semirigid Rotor System
Tandem Rotor System
What is the purpose of the swash plate in a helicopter?
To control the tail rotor
To stabilize the helicopter
To convert stationary control inputs into rotating inputs
To provide lift
It is a hollow cylindrical metal shaft which extends upwards from and is driven by the transmission.
rotor hub
rotor blades
rotor mast
transmission
It is the fore and aft movement of the blade in the plane of rotation. Its is sometimes called hunting or dragging.
Blade flap
Blade Lead/Lag
Blade feathering
Blade rpm
