AE 3&2 CH. 8

  1. What are the two main purposes of the
    AFCS and ASE
    • Automatic flight control and stabilization
    • systems ease the pilot’s workload and provide
    • aircraft stability at all speeds
  2. What subsystems make up the ASE couple system?
    • The Doppler radar system and the vertical
    • velocity system.
  3. When the ASE HOVER TRIM is engaged, hover trim
    control is transferred from the pilot to the ______________________
    The crew member at the hoist position
  4. What is the primary purpose of the stabilator
    To stop undesirable noseup attitudes.
  5. What is the rate limit of the DAFCS trim
    10 percent per second
  6. What unit is considered the heart of the
    The air navigation computer.
  7. When does the action called coning take
    • When the pilot applies collective to the
    • main rotor.
  8. What AFCS mode automatically dampens
    oscillations in the yaw, pitch, and roll axes?
    Stability augmentation mode.
  9. What are the four basic channels of operation
    for the ASE?
    • Pitch, roll,
    • collective, and yaw.
  10. On a fixed-wing aircraft, what control
    surface corrects for yaw?
  11. What two types of altitude signals can the
    AFCS use to maintain a constant altitude?
    Radar and barometric altimeter signals.
  12. When is the stabilator system TEST push button
    When airspeed is below 50 knots
  13. What ASE component allows the sonar operator to
    maintain the cable angle perpendicular, relative to the horizon?
    The cable angle control panel.
  14. Name the three major systems that make up the
    AFCS for helicopters
    • Stability augmentation system, stabilator
    • system, and digital automatic flight control
    • system.
  15. How much flight control authority is there when
    only SAS 1 is engaged?
    5-percent control authority.
  16. How does the pilot increase lift in a
    helicopter with a constant speed rotor?
    • By increasing the airfoil’s angle of attack
    • (blade pitch)
  17. When the pressure on both sides of the airfoil
    is nearly equal, what happens to the airfoil?
    • Turbulence causes the pressure on both surfaces
    • to become nearly equal, and the airfoil is said to
    • stall
  18. What is the rate of decent when the helicopter
    is less than 50 feet above the approach profile?
    120 feet/minute.
  19. Why is the AFCS synchronized with the
    flight controls before engaging the AFCS?
    • To prevent sudden and violent maneuvers
    • upon engagement
  20. What is the effective altitude range for the
    DAFCS radar altitude hold mode?
    0 to 5,000 feet
  21. What is the purpose of the DAFCS inner-loop
    control system?
    To improve helicopter stability.
  22. As fuel is used, what must the pilot reduce
    to lessen lift and prevent a gain in altitude?
    Angle of attack on the wing
  23. What type of heading signal does the AFCS
    receive from the compass/INS system?
    A clutched heading signal.
  24. What unit of the AFCS sends a signal that
    acts as a follow-up to flight control
    Surface position transmitter.
  25. What are the two modes of operation for
    electrohydraulic servo actuators?
    Manual and AFCS engaged.
  26. What does the ASE
    hover indicator show during an automatic transition from forward flight to
    Speed drift and rate of descent
  27. What AFCS component provides signal
    outputs representing yaw, pitch, and roll
    Three axis rate gyro.
  28. What is an airfoli?
    • An airfoil is any part of an aircraft designed
    • to produce lift.
  29. How many degrees will one rotation of the ASE
    YAW TRIM knob turn the helicopter?
    72 degrees.
  30. How many stick trim valves does the ASE have?
    Two, one for pitch and one for roll.
Card Set
AE 3&2 CH. 8
aviation electrician 3 and 2