Speaker
Mr
christophe Koppel
(KopooS Consulting Ind.)
Description
The paper describes the general strategy for electric propulsion orbit transfers, a open source optimiser for orbit transfer based on averaging techniques and the integration of such trajectory optimiser into EcosimPro® ESPSS (European Space Propulsion System Simulation). EcosimPro® is a Physical Simulation Modelling tool that is an object-oriented visual simulation tool capable of solving various kinds of dynamic systems represented by a set of equations, differential equations and discrete events. It can be used to study both transients and steady states. The object oriented tool, with the propulsion libraries ESPSS from ESA for example, allows the user to draw (and to design at the same time) the propulsion system with components of that specific library with tanks, lines, orifices, thrusters, tees. The user enhances the design with components from the thermal library (heaters, thermal conductance, radiators), from the control library (analogue/digital devices), from the electrical library, etc. The use of the new feature included into ESPSS, the satellite library is particularly interesting for orbital manoeuvres because the satellite library includes the flight dynamic (orbit and attitude) capabilities for a full spacecraft including orbital, attitude perturbations and power concerns during Sun's eclipse phases. In order to simulate realistic missions, an optimiser for orbit transfer has been integrated thanks to the design of few new components for interfacing the optimiser and the existing library. Hence the simulations take into account the interactions between the AOCS and the optimal thrust direction wanted to perform the orbit transfer and real strategies for power management during eclipses. Full satellite missions, for example continuous electric orbit transfer from GTO and from super-GTO to GEO are presented and particular behaviours highlighted.
| Applicant type | First author |
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Primary author
Mr
christophe Koppel
(KopooS Consulting Ind.)
