Measurement system for measuring the velocity of an aircraft

摘要

The disclosure herein relates to a measurement system to measure characteristics of the velocity vector of an aircraft in relation to a surrounding air mass, the measurement system comprising—a frontal surface of the aircraft, two primary sensors, each being fixed to the frontal surface of the aircraft and able to deliver an output value relating to the deformation experienced by the sensor, and a processing unit able to receive the output values and able to calculate the angle of attack and/or the velocity of the aircraft on the basis of these output values.

主权项

1. A measurement system for measuring characteristics of a velocity vector of an aircraft in relation to a surrounding air mass, the measurement system comprising:
a radome arranged at a front of the aircraft; two primary sensors, wherein each sensor is a strain gauge fixed to and inside the radome and is configured to deliver output values for a deformation experienced by the sensor; and a processing unit configured to receive the output values and to calculate an angle of attack and/or a velocity of the aircraft from the output values, wherein the processing unit comprises:
a calculator configured to calculate the angle of attack, the velocity, and/or an angle of sideslip from formulas based on coefficients and constants;a receiver configured to receive a series of values of the angle of attack, the velocity, and/or the angle of sideslip from other instruments of the aircraft;a comparer to compare each series of values thus received with a corresponding series of values calculated on the basis of the output values; andan updater to update the corresponding coefficients and/or constants for which the comparer has emitted a negative signal.