Low Thrust Orbit Transfer Optimiser for a Spacecraft Simulator (Espss -Ecosimpro® European Space Propulsion System Simulation)
6th ICATT, Darmstadt, March 15th to 17th, 2016 LOW THRUST ORBIT TRANSFER OPTIMISER FOR A SPACECRAFT SIMULATOR (ESPSS -ECOSIMPRO® EUROPEAN SPACE PROPULSION SYSTEM SIMULATION) Christophe R. Koppel KopooS Consulting Ind., 57 rue d'Amsterdam-75008 Paris ABSTRACT and analyses. That is a visual tool capable of solving various kinds of dynamic systems represented by writing equations The paper describes the general strategy for electric and discrete events. It can be used to study both transients propulsion orbit transfers, an open source optimiser for orbit and steady states. Such object oriented tool, with the transfer based on averaging techniques and the integration propulsion libraries ESPSS from ESA for example, allows of such trajectory optimiser into EcosimPro® ESPSS users to draw (and design at the same time) the propulsion (European Space Propulsion System Simulation). system with components of that specific library with tanks, EcosimPro® is a Physical Simulation Modelling tool that is lines, orifices, thrusters, tees. The user enhances the design an object-oriented visual simulation tool capable of solving with components from the other libraries (thermal, control various kinds of dynamic systems represented by a set of electrical, EP, etc). equations, differential equations and discrete events. It can Into the last release of ESPSS [16], new features address be used to study both transients and steady states. The object "Evolutionary behaviour of components" and "Coupled oriented tool, with the propulsion libraries ESPSS from ESA Simulation of Propulsion System and Vehicle Dynamics" , for example, allows the user to draw (and to design at the which is actually a "Satellite library" that includes the flight same time) the propulsion system with components of that dynamic (orbit and attitude) capabilities for a full spacecraft specific library with tanks, lines, orifices, thrusters, tees.
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