Air data computer

Question 1

air data computers have a central point for sensing….

Answer 1

pitot & static pressure and TAT

Question 2

ADC analogue

Answer 2

analogue inputs to analogue outputs
not as good
electro mechanical modules calculate values

Question 3

ADC digital

Answer 3

digital or analogue inputs
processor performs calculations and gathers info via bus and outputs to data bus
MEMs sensors,
peripherals

Question 4

ADC inputs

Answer 4

basic:
static pressure
pitot pressure
measured temp

other inputs:
AOA
weight on wheels
configuration

also stored data

Question 5

10 outputs of ADC

Answer 5

IAS & TAS 
OAT & TAT
mach number 
AOA
altitude
vertical speed 
Vmo/Mmo

Question 6

Systems using ADC outputs

Answer 6

primary flight instruments 
transponders 
autopilot and flight director 
flight management system (FMS)
flight data recorder
warning systems(stall, overspeed, ground proximity)
engine/ thrust management

Question 7

ADC system redundancy

Answer 7

small aircraft- 1 ADC

large aircraft- AT LEAST 2 ADC’s

Question 8

ADC advantages

Answer 8

increased reliability
ease of maintenance: configuration data stored separately
improved accuracy
electronic integration with other systems
lighter
simple warnings & switches