In the context of aviation and aerospace, an Air Data Module (ADM) is an electronic system that provides critical flight information to the aircraft's flight control and navigation systems. The primary function of an Air Data Module is to measure and calculate various atmospheric parameters, such as:

1. Static Air Pressure (Ps): The ambient air pressure surrounding the aircraft.
2. Pitot Air Pressure (Pt): The total air pressure, including dynamic pressure, measured at the pitot tube.
3. Mach Number (M): A dimensionless quantity representing the ratio of the aircraft's speed to the speed of sound.
4. Airspeed (V): The speed of the aircraft relative to the surrounding air.
5. Altitude (h): The aircraft's height above sea level.
6. Temperature (T): The ambient air temperature.

The Air Data Module typically consists of:

1. Pitot probe: Measures pitot air pressure.
2. Static ports: Measure static air pressure.
3. Air temperature sensor: Measures ambient air temperature.

By processing data from these sensors, the ADM calculates and provides the necessary air data parameters to the aircraft's:

1. Flight control computers: For autopilot, autothrottle, and flight envelope protection.
2. Navigation systems: For calculating position, velocity, and altitude.
3. Engine control systems: For engine performance optimization.
4. Flight instruments: For displaying airspeed, altitude, and other critical flight information to the pilots.

The Air Data Module plays a crucial role in ensuring safe and efficient flight operations, as accurate air data is essential for:

• Stable and controlled flight
• Precise navigation
• Optimal engine performance
• Safe takeoff and landing

In modern aircraft, the Air Data Module is often integrated with other systems, such as the Air Data Inertial Reference Unit (ADIRU), to provide a comprehensive set of flight data.