Hence, the flight control computers need this data before commanding the spoilers up.Īs discussed earlier, the control laws are what govern how the flight control computers command the flight control actuators. For instance, the ground spoilers on the wings can only come up when the gear oleos are compressed. The latter is used to determine if the aircraft is airborne or on the ground.
To determine that the aircraft is coming into land, the flight control computers use the aircraft height data from the radio altimeters. For instance, when coming in for a landing, the control law might have to be modified to allow the pilot to have better control of the aircraft. Radio altimeters: In many fly-by-wire aircraft, the flight control laws require to be tweaked at different phases of the flight.These data are highly important for flight control computers. Accelerometers measure the aircraft's vertical and lateral acceleration, while the gyrometers measure the roll rate, pitch rate, and yaw rate. Accelerometers and gyrometers: The accelerometers and gyrometers are placed at various points on the aircraft.These data include calibrated airspeed, angle of attack, altitude, etc. The air data information comes from the Air Data Computers (ADC). Some of the IR data includes aircraft heading, roll, pitch, yaw, etc. Inertial and air data: The inertial data comes from the Inertial Reference System (IRS).Pilot inputs: The pilot inputs are the most important set of data the flight control computers need, as it is this that determines how the aircraft is to be maneuvered.
The following is a list of data that is sent to the flight control computers: To make the computations easier and more accurate, flight control computers are fed a lot of information from aircraft systems.
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