Advertisement

Recent Improvements in the Trajectory Optimization Software ASTOS

  • P. Gath
  • A. Wiegand
  • A. Markl
  • K. H. Well
Part of the Lecture Notes in Computational Science and Engineering book series (LNCSE, volume 21)

Abstract

The Aerospace Trajectory Optimization Software ASTOS is using direct optimization methods such as multiple shooting and collocation to calculate the optimal control time history for an optimal control problem. The mathematical model is completely data driven, which means that the end-user need not write any code to specify the problem to solve

This paper will describe some of the major technical improvements recently made to ASTOS, as there are: initial guess generation, branched trajectories and new optimization methods. In addition, some new applications are discussed which demonstrate the flexibility of the ASTOS Model Libary

Keywords

Trajectory Optimization Orbit Transfer Reentry Vehicle International Astronautical Direct Optimization Method 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    ASTOS Model Library Reference Manual. (2001) ASTOS MLR 4.3.0, Institute of Fligth Mechanics and Control, University of Stuttgart, Germany, March 2001Google Scholar
  2. 2.
    Wiegand, A., Markl, A., Well, K. H., Mehlem, K., Ortega, G., Steinkopf, M. (1999) ALTOS - ESA’s Trajectory Optimization Tool Applied to Reentry Vehicle Trajectory Design. IAF-99-A6.09, 50th International Astronautical Congress, Amsterdam, The Netherlands, 4–8 October 1999Google Scholar
  3. 3.
    Well, K. H., Markl, A., Mehlem, K. (1997) ALTOS - A Software Packages for Simulation and Optimization of Trajectories of Launch-and Reentry Vehicles. IAF-97-V4.04, 48th International Astronautical Congress, Turin, Italy, 6–10 October 1997Google Scholar
  4. 4.
    Markl A., (to be published 2001) An Initial Guess Generator for Launch and Reentry Vehicle Trajectory Optimization. Dissertation, Institute of Fligth Mechanics and Control, University of Stuttgart, GermanyGoogle Scholar
  5. 5.
    Jänsch, C., Schnepper, K.,Well, K. H. (1994) Multiphase Trajectory Optimization Methods with Application to Hypersonic Vehicles. Applied Mathematics in Aerospace Science and Engineering, Edited by A. Miele and A. Salvetti, Plenum Press New York, New York, chapter 8Google Scholar
  6. 6.
    Gill, P. E., Murray, W., Saunders, M. A. (1997) SNOPT: An SQP Algorithm for Large-Scale Constrained Optimization. Report NA 97–2, University of California, San DiegoGoogle Scholar
  7. 7.
    Gath, P. F., Well, K. H. (to be published) Trajectory Optimization Using a Combination of Direct Multiple Shooting and Collocation. AIAA 2001–4047, AIAA Guidance, Navigation and Control Conference, Montreal, Quebec, 2001–4047 August 2001Google Scholar
  8. 8.
    Gath, P. F., Well, K. H., Mehlem, K. (2000) Automatic Initial Guess Generation for Ariane 5 Dual Payload Ascent Trajectory Optimization. AIAA 2000–4589, AIAA Guidance, Navigation and Control Conference, Denver, CO, 2000–4589 August 2000Google Scholar
  9. 9.
    Gath, P. F., Calise, A. J. (2001) Optimization of Launch Vehicle Ascent Trajectories with Path Constraints and Coast Arcs. Journal of Guidance, Control and Dynamics, Vol. 24, No. 2, March-April 2001, 296–304CrossRefGoogle Scholar
  10. 10.
    Betts, J. T. (1994) Optimal Interplanetary Orbit Transfer by Direct Transcription. The Journal of the Astronautical Sciences, Vol. 42, No. 3, July-September 1994, 247–268MathSciNetGoogle Scholar
  11. 11.
    Miele, A., Wang, T. (1993) Nominal Trajectories for the Aeroassisted Flight Experiment. The Journal of Astronautical Sciences, Vol. 41, No. 2, 139–163Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2002

Authors and Affiliations

  • P. Gath
    • 1
  • A. Wiegand
    • 2
  • A. Markl
    • 1
  • K. H. Well
    • 1
  1. 1.Institute of Flight Mechanics and ControlUniversity of StuttgartStuttgartGermany
  2. 2.TTI GmbH, Dept. of Optimization Guidance and ControlStuttgartGermany

Personalised recommendations