×

Combining direct and indirect methods in optimal control: Range maximization of hang glider. (English) Zbl 0808.65067

Bulirsch, R. (ed.) et al., Optimal control. Calculus of variations, optimal control theory and numerical methods. Basel: Birkhäuser. ISNM, Int. Ser. Numer. Math. 111, 273-288 (1993).
The authors consider the problem of the optimal range flight (maximal horizontal distance from the starting point) of a glider through a given thermal, whose distribution is defined by the upward wind velocity, as a function of the horizontal distance. The glider is subject to his weight, a lift force and a drag force. The lift force and the relative velocity are linked by a coefficient which plays the role of the control.
The problem is modeled by the minimum principles with adjoint variables. It is solved numerically, by combining a direct collocation method and a multiple shooting method.
For the entire collection see [Zbl 0780.00018].

MSC:

65K10 Numerical optimization and variational techniques
49M37 Numerical methods based on nonlinear programming
49J15 Existence theories for optimal control problems involving ordinary differential equations
49N70 Differential games and control
49N75 Pursuit and evasion games
70Q05 Control of mechanical systems