Podcast
Questions and Answers
Which control is responsible for changing the pitch angle of all main rotor blades simultaneously?
Which control is responsible for changing the pitch angle of all main rotor blades simultaneously?
- Throttle
- Antitorque pedals
- Collective pitch control (correct)
- Cyclic pitch control
What happens to the rotor r.p.m. when the pitch angle on the blades increases?
What happens to the rotor r.p.m. when the pitch angle on the blades increases?
- Rotor r.p.m. fluctuates
- Rotor r.p.m. increases
- Rotor r.p.m. decreases (correct)
- Rotor r.p.m. remains constant
What is the function of the throttle control?
What is the function of the throttle control?
- To control the cyclic pitch
- To compensate for change in drag
- To regulate engine r.p.m. (correct)
- To adjust the pitch angle of the blades
Which control is considered to be a secondary control of the other's function?
Which control is considered to be a secondary control of the other's function?
What is the purpose of the correlator in a helicopter?
What is the purpose of the correlator in a helicopter?
What is the primary control for manifold pressure in piston helicopters?
What is the primary control for manifold pressure in piston helicopters?
Where are the antitorque pedals located in a helicopter?
Where are the antitorque pedals located in a helicopter?
Which control is used to change the heading of the helicopter during forward flight?
Which control is used to change the heading of the helicopter during forward flight?
What happens if the right pedal is moved forward of the neutral position during cruising flight?
What happens if the right pedal is moved forward of the neutral position during cruising flight?
What is the primary purpose of the tail rotor?
What is the primary purpose of the tail rotor?
What determines the relative positions of the antitorque pedals to counteract torque?
What determines the relative positions of the antitorque pedals to counteract torque?
True or false: The tail rotor is only used to counteract torque of the main rotor.
True or false: The tail rotor is only used to counteract torque of the main rotor.
True or false: The antitorque pedals are not used to control the heading of the helicopter in forward flight.
True or false: The antitorque pedals are not used to control the heading of the helicopter in forward flight.
True or false: The pitch angle of the tail rotor blades can only be positive or negative.
True or false: The pitch angle of the tail rotor blades can only be positive or negative.
True or false: The tail rotor thrust does not overcome the torque effect of the main rotor during cruise flight if the right pedal is displaced forward of neutral.
True or false: The tail rotor thrust does not overcome the torque effect of the main rotor during cruise flight if the right pedal is displaced forward of neutral.
True or false: The maximum positive pitch angle of the tail rotor is generally greater than the maximum negative pitch angle available.
True or false: The maximum positive pitch angle of the tail rotor is generally greater than the maximum negative pitch angle available.
During forward flight, the antitorque pedals are not used to control the heading of the helicopter, except during portions of crosswind takeoffs and ______.
During forward flight, the antitorque pedals are not used to control the heading of the helicopter, except during portions of crosswind takeoffs and ______.
The cyclic control is used to change heading by making a ______ to the desired direction.
The cyclic control is used to change heading by making a ______ to the desired direction.
With the right pedal moved forward of the neutral position, the tail rotor either has a negative pitch angle or a small ______ pitch angle.
With the right pedal moved forward of the neutral position, the tail rotor either has a negative pitch angle or a small ______ pitch angle.
If the tail rotor has a negative pitch angle, tail rotor thrust is working in the same direction as the ______ of the main rotor.
If the tail rotor has a negative pitch angle, tail rotor thrust is working in the same direction as the ______ of the main rotor.
With the antitorque pedals in the neutral position, the tail rotor has a ______ positive pitch angle.
With the antitorque pedals in the neutral position, the tail rotor has a ______ positive pitch angle.
Flashcards
What does the collective control do?
What does the collective control do?
The collective control is responsible for changing the pitch angle of all main rotor blades simultaneously.
How does pitch affect rotor RPM?
How does pitch affect rotor RPM?
When the pitch angle on the blades increases, the rotor r.p.m. decreases.
What does the throttle control affect?
What does the throttle control affect?
The throttle control regulates the engine power, thereby affecting the manifold pressure.
What is the throttle control's role in relation to the collective?
What is the throttle control's role in relation to the collective?
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What does the correlator do?
What does the correlator do?
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What is the primary control for manifold pressure?
What is the primary control for manifold pressure?
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Where are the antitorque pedals?
Where are the antitorque pedals?
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What are the antitorque pedals used for?
What are the antitorque pedals used for?
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What is the main purpose of the tail rotor?
What is the main purpose of the tail rotor?
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What determines the tail rotor thrust?
What determines the tail rotor thrust?
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What determines the tail rotor pitch angle?
What determines the tail rotor pitch angle?
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What does the tail rotor do besides counteracting torque?
What does the tail rotor do besides counteracting torque?
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When are the antitorque pedals used to control heading?
When are the antitorque pedals used to control heading?
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What are the possible pitch angles of the tail rotor?
What are the possible pitch angles of the tail rotor?
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What happens when the right pedal is forward?
What happens when the right pedal is forward?
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Which pitch angle is greater for the tail rotor?
Which pitch angle is greater for the tail rotor?
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What is the cyclic control used for?
What is the cyclic control used for?
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What happens to the tail rotor pitch when the right pedal is moved forward?
What happens to the tail rotor pitch when the right pedal is moved forward?
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What happens when the tail rotor has a negative pitch angle?
What happens when the tail rotor has a negative pitch angle?
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What is the tail rotor pitch when the pedals are neutral?
What is the tail rotor pitch when the pedals are neutral?
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Study Notes
Helicopter Controls
- The collective control is responsible for changing the pitch angle of all main rotor blades simultaneously.
- When the pitch angle on the blades increases, the rotor r.p.m. decreases.
- The throttle control regulates the engine power, thereby affecting the manifold pressure.
Primary and Secondary Controls
- The throttle control is considered to be a secondary control of the collective control's function.
Correlator and Manifold Pressure
- The correlator synchronizes the throttle and collective controls to ensure a consistent manifold pressure.
- The throttle control is the primary control for manifold pressure in piston helicopters.
Antitorque Pedals
- The antitorque pedals are located on the floor of the helicopter.
- The antitorque pedals are used to change the heading of the helicopter during forward flight.
Tail Rotor
- The primary purpose of the tail rotor is to counteract the torque effect of the main rotor.
- The tail rotor thrust is determined by the relative positions of the antitorque pedals.
- The tail rotor can have a positive or negative pitch angle, depending on the direction of the tail rotor thrust.
True or False
- FALSE: The tail rotor is only used to counteract torque of the main rotor.
- FALSE: The antitorque pedals are not used to control the heading of the helicopter in forward flight.
- FALSE: The pitch angle of the tail rotor blades can only be positive or negative.
- FALSE: The tail rotor thrust does not overcome the torque effect of the main rotor during cruise flight if the right pedal is displaced forward of neutral.
- TRUE: The maximum positive pitch angle of the tail rotor is generally greater than the maximum negative pitch angle available.
Forward Flight and Crosswind Takeoffs
- During forward flight, the antitorque pedals are not used to control the heading of the helicopter, except during portions of crosswind takeoffs and landing.
Cyclic Control and Heading
- The cyclic control is used to change heading by making a turn to the desired direction.
- With the right pedal moved forward of the neutral position, the tail rotor either has a negative pitch angle or a small positive pitch angle.
- If the tail rotor has a negative pitch angle, tail rotor thrust is working in the same direction as the torque of the main rotor.
- With the antitorque pedals in the neutral position, the tail rotor has a small positive pitch angle.
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