Speaker
Mr
Sven Weikert
(Astos Solutions GmbH)
Description
The ASTOS software was originally designed as a trajectory optimization tool for launchers. This was more than 25 years ago. Since then the software had been continuously developed towards a multi-purpose analysis, simulation and optimization software for nearly all kind of space scenarios.
This paper shall present the latest extensions of ASTOS incorporated into release 8.1. The paper will first give an overview on ASTOS and its workflow. Then it will present the new capabilities.
Four new major developments have been made for the release 8.1 of ASTOS focussing on new markets and increased usability:
1) An integrated set of mission performance analysis features that cover almost all aspects required to fill a mission analysis report according to DOPS-GS-RM-1002-OPS-OSA.
2) Models and techniques for system concept analysis considering the power system, thermal control system as well as data management and communication systems.
3) A built-in tool to import CAD models, to easily texturize them and to use them for the built-in animation tool.
4) New wizards that ease the set-up of an ASTOS scenario and that help migrating a scenario from one to another application.
The mission analysis capabilities of ASTOS cover launch, LEOP, operational phase and post-mission disposal, whereas mission analysis aspects like operational life-time prediction, eclipse analysis, collision avoidance, deorbit and graveyard manoeuvres, station keeping, etc. are considered. The results are automatically written into the mission analysis report template.
For the system concept analysis dedicated models for solar arrays, batteries, PCDUs, data storages have been implemented. On the other hand all existing models, e.g. for actuators or sensors have been extended by thermal, data and power system aspects. These individual components can be linked into a system using a node model. In case of the thermal system each node can be linked to a surface element or another node, whereas each connection is characterized by its thermal resistance.
For a realistic animation of a scenario it is essential to have a detailed geometry model of the vehicle. These models are typically available as CAD files. Those models lack texture and relevant surface material properties. These features are typically added using expert tools like Maya, Cinema4D or Blender. In order to reduce this effort ASTOS 8.1 provides an easy-to-use texturing tool that comprises a database with typical spacecraft surface materials.
Due to the flexibility of ASTOS, it requires several steps to create a scenario in the classical way. This effort is significantly reduced by the new wizards. Based a question tree these wizards either create a new scenario or reduce the effort to migrate a scenario, e.g. from an optimization towards a guidance reference scenario.
The paper will detail on each of the above mentioned new functionalities, showing user input and results taken from typical example scenarios.
| Applicant type | First author |
|---|
Primary author
Mr
Sven Weikert
(Astos Solutions GmbH)
Co-authors
Mr
Alexander Dobler
(Astos Solutions GmbH)
Mr
Andreas Wiegand
(Astos Solutions GmbH)
Mr
Francesco Cremaschi
(Astos Solutions GmbH)
Mr
Jochen Teufel
(Astos Solutions GmbH)
Mr
Martin Juergens
(Astos Solutions GmbH)
Dr
Sven Erb
(European Space Agency)
Mr
Sven Schaeff
(Astos Solutions GmbH)
Mr
Valentino Zuccarelli
(Astos Solutions GmbH)
