Aircraft spin; Direct multiple shooting method; Limit cycle; Trajectory optimization; Aerodynamic forces; Aileron failure; Control failure; Direct multiple shooting; Initial conditions; Limit-cycle; Optimal controls; Aerospace Engineering
Résumé :
[en] In this paper, the problem of aircraft spin recovery is solved as a trajectory optimization problem using direct multiple shooting method with time and altitude-loss as cost functions to be minimized. A stable oscillatory spin state is chosen as the initial condition and the optimal control inputs required to transfer the aircraft to a steady level-flight trim state are determined. Optimal spin recovery simulations are carried out with scaled bounds of control inputs to determine their effectiveness and feasibility for recovery in the case of total control failures. It is shown that spin recovery is feasible in the case of aileron failure, and only arresting of yaw-rate is possible in the case of rudder and throttle failures. Optimal spin recovery simulations are also carried out to determine the effects of wind and aerodynamic forces. It is found that spin recovery solutions are sensitive to initial conditions in the presence of wind, and increase of lift and decrease of drag reduce the altitude-loss of the maneuver.
Disciplines :
Ingénierie aérospatiale
Auteur, co-auteur :
DASARI, Mohan ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > Automation
Go, Tiauw H.; Department of Aerospace, Physics and Space Sciences, Florida Institute of Technology, Melbourne, United States
Co-auteurs externes :
yes
Langue du document :
Anglais
Titre :
Optimization of aircraft spin recovery maneuvers
Date de publication/diffusion :
juillet 2019
Titre du périodique :
Aerospace Science and Technology
ISSN :
1270-9638
eISSN :
1626-3219
Maison d'édition :
Elsevier Masson SAS, Issy les Moulineaux Cedex, Fra
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