Term
| What unit compensates for helicopter main rotor torques? |
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Definition
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Term
| What is the purpose of a rotorcraft cyclic pitch control? |
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Definition
| It changes the pitch of each rotor blade during a cycle of rotation |
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Term
| Name several high-lift devices. |
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Definition
Leading and trailing edge flaps
Slots and slats |
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Term
| What are three mechanical methods used to actuate flight control systems? |
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Definition
| Cable, push-pull and torque tube |
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Term
| What is the purpose of the rotorcraft collective pitch control? |
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Definition
| It changes the lift of the main rotor blades simultaneously |
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Term
What tools are used to check control surface travel? |
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Definition
Propeller protractor
Ruler
Rigging fixtures
Templates and special tools |
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Term
| What is the purpose of vortex generators? |
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Definition
| Boundary layer air control |
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Term
| Why are control surfaces locked when an aircraft is parked? |
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Definition
| To prevent wind damage to controls |
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Term
| What are the three axes of an aircraft? |
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Definition
Lateral
Longitudinal
Vertical
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Term
| What is considered the secondary flight controls group? |
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Definition
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Term
| What controls a helicopter tail rotor? |
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Definition
| Anti-torque or foot pedals |
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Term
| What flight control surfaces are considered the primary group? |
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Definition
Ailerons, elevators and rudder |
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Term
| What flight controls are included in the auxiliary group? |
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Definition
Wing and leading edge flaps
Speed brakes, spoilers and slots |
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Term
| Where does breakage of control cables occur most frequently? |
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Definition
| Where cables pass over pulleys and through fairleads |
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Term
| What is a servo trim tab? |
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Definition
| It is an auxiliary control, positioned by movement of cockpit controls and aids in moving a control surface |
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Term
| What is a balance trim tab? |
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Definition
| It is an auxiliary control, positioned by fixed linkage in the opposite direction of a control surface, to aid in control surface movement |
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Term
| What is a cable fairlead? |
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Definition
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Term
| What are cable tension regulators? |
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Definition
| They are mechanical devices that automatically maintain cable tension |
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