Optimization of aircraft spin recovery maneuvers
| Autor: | Tiauw Hiong Go, D. M. K. K. Venkateswara Rao |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0209 industrial biotechnology
Computer science Aerospace Engineering 02 engineering and technology Rudder Trajectory optimization Optimal control 01 natural sciences Direct multiple shooting method 010305 fluids & plasmas law.invention Lift (force) 020901 industrial engineering & automation Aileron Drag law Control theory 0103 physical sciences Initial value problem |
| Zdroj: | Aerospace Science and Technology. 90:222-232 |
| ISSN: | 1270-9638 |
| DOI: | 10.1016/j.ast.2019.04.046 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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