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Questions and Answers
Which component of a helicopter is responsible for transmitting power from the engine to the main rotor?
What is the purpose of the antitorque system in a helicopter?
What are the three classifications of a rotor system in a helicopter?
Which flight control is responsible for controlling the pitch of the main rotor blades?
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Which engine type is commonly used in medium to heavy lift helicopters?
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What are the four basic flight controls used when flying a helicopter?
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Which type of rotor system allows for two different movements, flapping and feathering?
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Which type of rotor system is mechanically simple, but structurally complex because operating loads must be absorbed in bending rather than through hinges?
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What is the purpose of the antitorque rotor or tail rotor in a helicopter?
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What is the NOTAR® system in a helicopter?
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True or false: The gas turbine engine is used in most light lift helicopters.
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True or false: The throttle control is located on the end of the cyclic pitch control.
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True or false: The collective pitch control controls the pitch of the tail rotor.
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Another engine type used in most medium to heavy lift helicopters due to its large horsepower output is the gas ______.
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The throttle, which is usually a twist grip control located on the end of the collective lever, controls the ______ of the main rotor blades.
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The gas turbine engine drives the main ______, which then transfers power directly to the main rotor system, as well as the tail rotor.
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Study Notes
Helicopter Power Transmission
- The transmission system connects the engine to the main rotor, enabling power transfer necessary for flight.
Antitorque System Purpose
- The antitorque system, commonly the tail rotor, counteracts the torque effect produced by the main rotor, stabilizing the helicopter's yaw movement.
Rotor System Classifications
- Three primary classifications of rotor systems:
- Conventional: Single main rotor with a tail rotor.
- Tandem: Two main rotors in tandem configuration.
- Intermeshing: Two main rotors that intersect, eliminating the need for a tail rotor.
Pitch Control
- The collective control manages the pitch angle of the main rotor blades, allowing for altitude adjustments.
Engine Types for Heavy Lift Helicopters
- Turboshaft engines are frequently utilized in medium to heavy lift helicopters due to their efficiency and power.
Basic Flight Controls
- Four essential flight controls for helicopter operation include:
- Cyclic Pitch Control: Affects rotor blade pitch to change direction.
- Collective Pitch Control: Adjusts overall rotor blade pitch for altitude changes.
- Antitorque Pedals: Control the tail rotor's pitch for yaw movements.
- Throttle Control: Regulates engine power output.
Rotor System Movements
- The semi-rigid rotor system allows for both flapping and feathering movements, enhancing performance and control.
Structural Complexity
- The fully articulated rotor system, while mechanically straightforward, is structurally complex as it absorbs loads through bending rather than hinges.
Antitorque Rotor Purpose
- The tail rotor (antitorque rotor) generates thrust in the opposite direction of the main rotor's torque, maintaining helicopter stability and control.
NOTAR® System
- The NOTAR® (No Tail Rotor) system uses a fan-driven technology to produce thrust, eliminating the need for a tail rotor and improving safety and efficiency.
Engine Types (True/False)
- True: Gas turbine engines are prevalent in most light lift helicopters.
- False: The throttle control is typically found on the collective lever, not at the end of the cyclic pitch control.
- False: The collective pitch control does not manage the tail rotor's pitch; it solely adjusts the main rotor's pitch.
Gas Engine Type
- The gas turbine engine is another type commonly found in medium to heavy lift helicopters, known for its high horsepower output.
Throttle Control Location
- The throttle control, usually in the form of a twist grip on the collective lever, adjusts the power of the main rotor blades.
Main Rotor System Connection
- The gas turbine engine drives the main transmission, which subsequently transfers power to both the main rotor system and the tail rotor.
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Description
Test your knowledge on helicopters and their components with this introductory quiz. Learn about the different parts of a helicopter and how they work together to keep it flying. Perfect for aviation enthusiasts and those interested in learning more about these fascinating aircraft.
