Helicopter Rotor Systems Quiz

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 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 condition can occur in semirigid rotor systems due to excessive rotor flapping?

• Mast bumping

• Blade feathering

• Blade lead

• Rotor drag

Which rotor system is mechanically simple but structurally complex?

• Semirigid Rotor System

• Coaxial Rotor System

• Rigid Rotor System

• Fully Articulated 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

What type of rotor system uses counter-rotating rotors?

• Rigid Rotor System

• Coaxial Rotors

• Tandem Rotor

• Intermeshing Rotors

What is a significant advantage of coaxial rotors?

• Increased mechanical complexity

• Elimination of the need for a tail rotor

• Simpler design

• Higher vibration levels

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