Air Data Computer

Question 1

Adc

Answer 1

Acts as a central data collection point for
ADIRU : air data inertial reference unit

Question 2

Analogue adc

Answer 2

~uses physical inputs
~pipes everywhere
~very messy
~time consuming diagnosis
~obsolete due to digital computers

Question 3

Digital adc

Answer 3

~uses processor
~peripherals
~MEMS sensors (mirco electric mechanical sensors) ,a pressure is converted to electrical signals
~analogue /digital conversts

Line replacement units are fitted to replace if unit a breaks

Question 4

ADC inputs

Answer 4

INPUT
~STATIC PRSSURE
~PITOT PRESUURE
~TOTAL AIR TEMP (TAT)
~AoA
~WEIGHT ON WHEELS
~CONFIGURATION FLAPS/SLATS

OUTPUT
~IAS AND TAS
~OAT AND TAT
~MACH NUMBER
~ALTITUDE
~VERTICAL SPEED
~Vmo /Mmo

Question 5

MOST CAT A/C has upto 3 ADCs

Question 6

Systmes requireng adc output

Answer 6

~primary flight instrumets
~transpnder (tcas)
~autopilot and flight director
~flight managemnt sytems(fms0
~flight dta record
~warinfig sytm for stall over speed
~gpws
~engine magentmt