Elements of autonomous flight control and guidance of the modern fighter aircraft

Abstract

U radu je opisano uzdužno gibanje modernog borbenog aviona IR-1 za četiri različita režima leta. Analiziran je utjecaj stlačivosti na aerodinamičke koeficijente kako bi se odabrali režimi leta za kasniju analizu. Provedena je uzdužna statička stabilnost aviona, korištenjem linearnog modela gibanja. Napravljen je sustav stabilizacije te su dobivena pojačanja u povratnim vezama. Analiziran je utjecaj tlaka na dobivena pojačanja. Uspoređen je odziv sustava s i bez pojačanja povratnih veza te je provedena ocjena kvalitete. Analiziran je sustav upravljanja visinom leta s pojačanjem i dinamikom prvog reda te je provedena usporedba odziva sustava. Prikazana je i promjena visine u vremenu. Svi rezultati dobiveni su uz pomoć Matlab/Simulink paketa.This master thesis describes the longitudinal motion of a modern combat aircraft IR-1 in four different flight regimes. The impact of compressibility on aerodynamic coefficients was analyzed to select flight regimes for further investigation. Longitudinal static stability of the aircraft was examined using a linear motion model. A stabilization system was implemented, and gains in feedback loops were determined. The influence of pressure on the obtained gains was analyzed. The system's response was compared with and without feedback loop gains, and a quality assessment was conducted. The altitude control system with feedback and first-order dynamics was analyzed, and the system's response was compared. The change in altitude over time was also presented. All results were obtained using the Matlab/Simulink package