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