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Coplanar Low-Thrust Transfer with Eclipses Using Analytical Costate Guess
Max Cerf
Low-thrust orbital transfers are difficult to optimize by indirect methods. The main issues come from the costate guess and from the numerical propagation accuracy required by the…
Multiple Object Trajectography Using Particle Swarm Optimization Combined to Hungarian Method
Max Cerf
The problem of simultaneous trajectography of several dynamical objects is formulated as an optimization problem. The available observations consist in a series of photographs show…
Why do launch trajectories end downwards
Max Cerf
The problem of finding the optimal thrust profile of a launcher upper stage is analyzed. The engine is assumed to be continuously thrusting, following either a linear or a bilevel…
Minimum time control of the rocket attitude reorientation associated with orbit dynamics
Jiamin Zhu, Emmanuel Trélat, Max Cerf
In this paper, we investigate the minimal time problem for the guidance of a rocket, whose motion is described by its attitude kinematics and dynamics but also by its orbit dynamic…
Planar tilting maneuver of a spacecraft: singular arcs in the minimum time problem and chattering
Jiamin Zhu, Emmanuel Trélat, Max Cerf
In this paper, we study the minimum time planar tilting maneuver of a spacecraft, from the theoretical as well as from the numerical point of view, with a particular focus on the c…
Low-Thrust Transfer Between Circular Orbits Using Natural Precession
Max Cerf
The minimum-fuel low-thrust transfer between circular orbits is formulated using the Edelbaum's averaged dynamics with the addition of the nodal precession due to the first zonal t…