Avionics Flashcards
(31 cards)
Which component contains the auto pilot logic
MCPA
Modular central processor assembly
How many AVC’s are contained in the MCPA
2
AVC1 &2
Found in the system dialogue from the MCPA mode drop-down menu
Which components are the primary sensors
INS/GPS & ADU
Internal navigation system
Air data unit
How many ADU sensors are contained in the MCPA
3
The ADU contains the static pressure sensor dynamic pressure sensor and temperature sensor in a triple redundancy configuration!
Air data units communicate air pressure temperature and airspeed information for navigation calculations!
How long does it take for the INS to align an enter NAV mode
6 Min.
Aircraft configuration for ATLS, the INS will enter NAV mode automatically. Wait six minutes before moving the aircraft following powerup of the aircraft, for the INS initialization
Pg. 254
Name three things that indicate an INS is initializing
Navigation lights turn on and off every 10 seconds, various INS related warnings, and FOM 5000 m
What are the indications the INS is in NAV mode
INS reports navigation mode and FOM accuracy is less than 100 m
What does the MCPA automatically do to “vote in” Sensors upon completion of INS alignment
Sensor reset
Pg. 254
What does a sensor reset do
Reset MCPA voting logic
Pg 254
How many GPS satellites are required to calculate position
3
Pg 255
NOTE
Four satellites are required in to receive GPS altitude, however only three required to provide a position fixed
Which components back up INS/GPS
DMU, FVU, and DGPS
What are the three axes of flight
Lateral, longitudinal, vertical
Which axis of flight is controlled by ailerons
longitudinal
Which axis of flight is controlled by elevators
Lateral
Which acts as a flight control by Rudders
Vertical
What system automatically moves our rudders with the ailerons in order to make coordinated turns
Aileron rudder interconnect
ARI
Which flight control services increase an aircraft rate of descent without increasing airspeed
Flaps
Which flap setting places the flaps at 30° angle
Emergency
When and EO is in control of the aircraft which auto pilot level is engaged
Position sticks
When in AO is in control of the aircraft Which auto pilot level is engaged
Knobs
When is the rate stick auto pilot level Used
Never
Which primary sensor does the MCPA use to limit aileron movement when positions sick auto pilot level is engaged
INS
Which control loop malfunction is based on a 12 second command and report
Altitude
When will the airspeed control loop malfunction appear
Airspeed command and report differ by at least five knots for more than 17 seconds
