ADS

https://www.nasa.gov/centers/johnson/pdf/383438main_air_data_system_workbook_21002.pdf

https://www.smartcockpit.com/docs/P180_Avanti-Air_Data_System.pdf

Aircraft: LCA, HAL-Tejas

source ==> inputs ==> algorithm ==> outputs ==> destination

• Air Data Probe - pitot tube, static port - 3 (nose, left, right)

• TAT sensor - 1 (down)

• AOA sensor - 2 (left, right)

• AOSS Sensor  - 2 (left, right)

https://www.indiatoday.in/india/story/watch-video-iaf-chief-rks-bhaduria-tejas-fighter-lca-squadron-sulur-1682403-2020-05-27

Air Data Computer ADC - 4 (RS-422) ==> ADC1, ADC2, ADC3, ADC4

other avionics systems: MIL-STD-1553B

processor: intel i960 (80960) - 32-bit processor

source code: Ada language

testing, for expected output: C language

testing, for test procedure: Ada language

outputs:

• airspeed - IAS, CAS, EAS, TAS, Mach number, VS

• altitude – uncorrected pressure altitude, baro corrected pressure altitude, 

• pressures data - static pressure, dynamic pressure, total pressure

• temperatures data - TAT, SAT, International Standard Atmosphere (ISA) delta temperature 

• AOA - Angle of attack (relative wind and chordline of wing)

• AOSS - Angle of side slip (relative wind and longitudinal axis)

• VMO/MMO (max operational airspeed / max operational Mach)

ADS sends date to:

• pilot - display system

• flight control system

• flight management system

• engine control systems