Research on Embedded Atmospheric Measurement Method Based on Three-point Method

Abstract

The requirements of maneuverability, velocity and control ability of modern aircraft are getting higher and higher. Effectively controlling the aircraft when flying at a high attack angle can greatly improve the maneuverability of the aircraft and reduce the stall speed of the aircraft. Flush Air Data Sensing System can indirectly obtain the angle of attack, sideslip angle, and the change of the incoming flow speed which provides necessary parameters for the flight control of the aircraft and meets the parameter measurement requirements of the aircraft. The algorithm research on pressure model and model trimming was conducted based on the three-point method with good real-time performance and high accuracy after study of traditional pressure models. And a series of experiments were performed to modify the accuracy of the model. After experimental verification, the model can be used to calculate the attack angle, sideslip angle, and flow velocity in flight projects, which can provide certain parameters or basis for aircraft flight control.