Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
30 Cards in this Set
- Front
- Back
|
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 is an airfoli?
|
An airfoil is any part of an aircraft designed
to produce lift. |
|
|
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 |
|
|
On a fixed-wing aircraft, what control
surface corrects for yaw? |
Rudder
|
|
|
As fuel is used, what must the pilot reduce
to lessen lift and prevent a gain in altitude? |
Angle of attack on the wing
|
|
|
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 does the action called coning take
place? |
When the pilot applies collective to the
main rotor. |
|
|
What two types of altitude signals can the
AFCS use to maintain a constant altitude? |
Radar and barometric altimeter signals.
|
|
|
Why is the AFCS synchronized with the
flight controls before engaging the AFCS? |
To prevent sudden and violent maneuvers
upon engagement |
|
|
What unit is considered the heart of the
AFCS? |
The air navigation computer.
|
|
|
What AFCS component provides signal
outputs representing yaw, pitch, and roll rates? |
Three axis rate gyro.
|
|
|
What type of heading signal does the AFCS
receive from the compass/INS system? |
A clutched heading signal.
|
|
|
What are the two modes of operation for
electrohydraulic servo actuators? |
Manual and AFCS engaged.
|
|
|
What unit of the AFCS sends a signal that
acts as a follow-up to flight control movement? |
Surface position transmitter.
|
|
|
What AFCS mode automatically dampens
oscillations in the yaw, pitch, and roll axes? |
Stability augmentation mode.
|
|
|
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.
|
|
|
What is the primary purpose of the stabilator system?
|
To stop undesirable noseup attitudes.
|
|
|
When is the stabilator system TEST push button operational?
|
When airspeed is below 50 knots.
|
|
|
What is the purpose of the DAFCS inner-loop control system?
|
To improve helicopter stability.
|
|
|
What is the rate limit of the DAFCS trim actuators?
|
10 percent per second.
|
|
|
What is the effective altitude range for the DAFCS radar altitude hold mode?
|
0 to 5,000 feet.
|
|
|
What is the rate of decent when the helicopter is less than 50 feet above the approach profile?
|
120 feet/minute.
|
|
|
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
|
|
|
How many degrees will one rotation of the ASE YAW TRIM knob turn the helicopter?
|
72 degrees.
|
|
|
What ASE component allows the sonar operator to maintain the cable angle perpendicular, relative to the horizon?
|
The cable angle control panel.
|
|
|
What does the ASE hover indicator show during an automatic transition from forward flight to hover?
|
Speed drift and rate of descent
|
|
|
How many stick trim valves does the ASE have?
|
Two, one for pitch and one for roll.
|
|
|
What are the four basic channels of operation for the ASE?
|
Pitch, roll, collective, and yaw.
|
