Air Data Computer

Question 1

What is it?

Answer 1

Acts as a central data collection point for Pitot/static pressure and TAT.
Located in fwd avionics bay.
Combined with inertial reference unit.

Question 2

The digital air data computer architecture?

Answer 2

MEMS Sensors
Analogue/digital converters
Uses configuartion modules for different aircraft
Converts analogue pressure into a digital signal to be sent to the ADC.

Question 3

ADC inputs

Answer 3

Static pressure
Pitot pressure
TAT

Question 4

ADC outputs

Answer 4

AOA
Weight on wheels
Config
IAS and TAS
OAT and TAT
Mach number
Altitude
Vertical speed
Vmo/Mmo

Question 5

Systems requiring ADC outputs

Answer 5

Primary flight instruments
Transponders
TCAS
Autopilot/FD
FMS
FDR
Warning systems
GPWS
Engine management

Question 6

How many ADCs do Cat aircraft have?

Answer 6

3.