Description
Trajectory design and optimization; multi-objective multi-disciplinary optimization; local and global optimization techniques; stability; dynamic systems theory; dynamical models; space flight mechanics mathematical foundations;
Dr
Alexander Wittig
(ESA Advanced Concepts Team)
16/03/2016, 10:40
08: Optimization and Dynamics
Oral presentation at the conference
Optimal trajectories for spacecraft guidance, be it during orbital transfers or landing sequences are often pre-computed on ground and used as nominal desired solutions later tracked by a secondary control system. Linearization of the dynamics around such nominal profiles allows to cancel the error during the actual navigation phase when the trajectory is executed.
In this study, we assess...
Mr
Marco Ciarambino
(Politecnico di Milano - Aerospace Science and Technology Dept.)
16/03/2016, 11:00
08: Optimization and Dynamics
Oral presentation at the conference
In recent years, a renewed interest in space exploration has induced investing a growing amount of human and financial resources to provide next generation spacecraft with enhanced autonomous navigation and landing capabilities. Complex missions in which close approach to and landing on uncooperative objects play a major role are being developed by numerous space agencies: in particular, ESA...
Dr
Alexander Wittig
(ESA Advanced Concepts Team)
16/03/2016, 11:20
08: Optimization and Dynamics
Oral presentation at the conference
The optimization of low-thrust trajectories is a difficult task. While techniques such as Sims-Flanagan transcription gives good results for short transfer arcs with at most a few revolutions, solving the low-thrust problem for orbits with large numbers of revolutions is much more difficult.
We developed a massively parallel genetic optimization algorithm to obtain low-thrust solutions for...
Dr
Junichiro Kawaguchi
(JAXA)
16/03/2016, 11:40
08: Optimization and Dynamics
Oral presentation at the conference
This paper presents the extended orbital synthesis results from the author’s work in 2009 to achieve ballistic and short period out-of ecliptic trajectories which possess ultimately the most highly and most concise solar polar properties. Those are realized through almost ballistic flight instead of using electric propulsion or solar sail acceleration. The strategy developed utilizes a Jovian...
Dr
Alexander Wittig
(ESA Advanced Concepts Team)
16/03/2016, 12:00
08: Optimization and Dynamics
Oral presentation at the conference
The use of the gravity of celestial bodies for gravity assist maneuvers is quite common in astrodynamics. The spacecraft gravitationally interacts with the celestial body in such a way as to provide the desired delta-v to the spacecraft. While this works well for large bodies such as planets, the gravitational attraction of small bodies, such as asteroids, is typically too small to perform...
