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30 Cards in this Set
- Front
- Back
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What is the two main purpsoses of the AFCS and ASE? |
Ease pilot workload and provide aircraft
stability at all speeds. |
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What is airfoil?
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Any part of an aircraft designed to produce
lift. |
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When the pressure on both sides of an Airfoil is equal what happens to the Airfoil?
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The airfoil stalls.
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On a fixed-wing aircraft, what control
surface corrects for yaw? |
Rudder.
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As fuel is used, what must the pilot reduce
to lessen lift and prevent a gain in altitude? |
Angle of attack on the wing
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How does the pilot increase lift in a
helicopter with a constant speed rotor? |
By increasing the airfoil’s angle of attack
(blade pitch). |
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When does the action called coning take
place? |
When the pilot applies collective to the
main rotor |
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What two types of altitude signals can the
AFCS use to maintain a constant altitude? |
Radar and barometric altimeter signals
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Why is the AFCS synchronized with the
flight controls before engaging the AFCS? |
To prevent sudden and violent maneuvers
upon engagement |
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What unit is considered the heart of the
AFCS? |
The air navigation computer.
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What AFCS component provides signal
outputs representing yaw, pitch, and roll rates? |
Three axis rate gyro.
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What type of heading signal does the AFCS
receive from the compass/INS system? |
A clutched heading signal
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What are the two modes of operation for
electrohydraulic servo actuators? |
Manual and AFCS engaged
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What unit of the AFCS sends a signal that
acts as a follow-up to flight control movement? |
Surface position transmitter
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What AFCS mode automatically dampens
oscillations in the yaw, pitch, and roll axes? |
Stability augmentation mode.
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List the two ways of grouping aircraft
instruments. |
By operating principles and the job they
perform. |
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What determines the air pressure at any
given altitude? |
The weight of the air above that altitude
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What is the standard atmospheric pressure at 5,000 feet of altitude?
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12.23 pounds per square inch.
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Name the three indicators that use pressures the pitot-static system
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Airspeed, altimeter, and vertical speed
indicator |
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What instrument uses both pitot and static air pressure?
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Airspeed indicator.
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What is the Mach number for an aircraft
flying at twice the speed of sound? |
Mach 2.
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Define the terms “AGL” and “MSL.”
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AGL—Altitude above ground level, and
MSL —altitude above mean sea level. |
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Define the term “absolute altitude.
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The distance between the aircraft and the
terrain it is flying over. |
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What is the name for the aneroid mechanism
used in most altimeters? |
Bimetal yoke
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Name the four inputs to the air data
computer system. |
Total pressure (pitot), indicated static
pressure, indicated angle of attack, and total temperature |
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Define the term “impact pressure.”
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The force of air against the aircraft
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What is the operational limit of aircraft
using the CPU-46/A supersonic altitude computer? |
80,000 feet of altitude and Mach 2.5
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What system actuates the rudder pedal shaker to warn the pilot of an impending
stall? |
Angle of attack
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What determines the degrees of freedom for a gyro?
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The number of gimbals the gyro has.
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Name the two basic properties of gyroscopic action
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Rigidity in space and precession.
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