The Air Data Computer (ADC) - Ch 9

Question 1

Analogue Systems

Answer 1

Using physical properties to convey information
Voltage created represents number transmitted to analogue instrument
Several internal modules provide required outputs

Question 2

Digital System

Answer 2

Analogue + digital inputs (1’s and 0’s)

Digital systems are less vulnerable to corruption by interference

Question 3

Digital ADCs

Answer 3

Input = Analogue which is converted to digital via computers

Data bus that everything connects to: Processor, Memory, Inputs, outputs

Gathers information from inputs and send outputs to data bus

Question 4

Redundancies

Answer 4

Small AC: single ADC with standby pressure instruments

Large AC: At least two ADCs

Question 5

Systems that operate via ADC

Answer 5

Primary flight instruments 
Transponders 
Autopilot and flight director 
FMS
Flight data recorder 
Warning system 
Thrust management

Question 6

Key Inputs (to memorise)

Answer 6

Static Pressure

Pitot Pressure and Measured Temp (RAT)