Flight Controls Flashcards
How will the rotor discs react to a right pedal input?
Right pedal input tilts the forward swashplate to the right and the aft swashplate to the left
This movement affects the helicopter’s yaw performance.
How will the rotor discs react to a right cyclic input?
Moving the cyclic stick right tilts both the forward and aft swashplates to the right
This input changes the helicopter’s lateral movement.
What happens to the collective pitch in the forward and aft rotors when the cyclic is moved forward?
Forward cyclic input decreases thrust in the forward rotor system and increases thrust in the aft rotor system
This causes the aircraft to pitch nose down and increase airspeed.
What control movements are required for a hovering turn about the center hook?
Pedal input only
What control movements are required for a hovering turn about the forward rotor?
Pedal and cyclic in opposite direction
What control movements are required for a hovering turn about the aft rotor?
Pedal and cyclic in same direction
What does the abbreviation DAFCS stand for?
Digital advanced flight control system.
What does the abbreviation ILCA stand for?
Integrated Lower Control Actuator
What does the abbreviation CCDA stand for?
Cockpit Control Driver Actuator
What does the abbreviation CPT stand for?
Control Position Transducer
Which aircraft system causes the extensible link portion of the ILCA’s to make control inputs?
DAFCS
What is the minimum allowable forward cyclic stick travel during the controls check?
7 in FWD
What is the minimum allowable aft cyclic stick travel during the controls check?
4 in AFT
What are the control limitations for ground operations?
- Thrust – no lower than ground detent
- Lateral cyclic – 1 inch
- Aft cyclic – 2 inches
- Pedals - .75 inches
Should you enter forecasted moderate or stronger turbulence with an inoperative thrust brake?
No
What environmental flight condition shall be avoided when the thrust brake is inoperative?
Moderate or strong turbulence
Which control axes have magnetic brakes that are released when the centering device release switch is pressed?
Pitch, Roll and Yaw
Why is it important to have the left and right pedals adjusted to the same holes prior to engine start?
To prevent droop stop pounding
What are the functions of the boost portion of the ILCA?
- Provide hydraulic assist from cockpit controls
- Prevent control feedback
What is the function of the DAFCS extensible link portion of the ILCA?
Rate dampening
Counteracting environmental conditions
How will the forward and aft rotor discs react when the cyclic is moved left?
They will both tilt to the left
What are the two parts of the #1 Pitch ILCA?
- Boost
- Extensible link
Should you slip the thrust brake during your controls check?
No
Pulling the cyclic aft increases pitch in the forward blades and decreases pitch in the aft blades, this is an example of?
Differential Collective Pitch (DCP)
What component improves control feel by reducing control sensitivity when the magnetic brake is released?
Viscous Damper
What is the purpose of the balance springs on all axes?
To Balance controls around a neutral position
What is the preset tilt of the Forward Transmission?
9 degrees
What is the preset tilt of the Aft Transmission?
4 degrees