Angle of Attack-Airspeed Complementary Estimation Method Based on Multivariate Aerodynamic Model
Based on the existing airborne system and equipment information,the study of air data estima-tion methods that are not similar to airborne air data systems can improve the reliability of air data systems and further ensure flight safety.Based on the background of civil aircraft,a multivariate aerodynamic mod-el is constructed by optimizing the stepwise regression analysis method and using wind tunnel test data and flight data.Based on the relationship between the lift coefficient of the aircraft and the dynamic pres-sure conversion,a complementary estimation method of angle of attack and airspeed is studied by fusing the information of air data sensors and airborne equipment.The aerodynamic model and flight data simula-tion verification test of a civil aircraft show that the airspeed estimation error of this method is better than 1.14 m/s,and the angle of attack estimation error is better than 0.17°,which has good engineering ap-plication reference value.
万方数据
维普
