ISIS : CNES Initiative for Space Innovative Standards
- Paper number
IAC-09.B4.7.1
- Author
Dr. Charles Koeck, EADS Astrium, France
- Coauthor
Mr. Jean-Michel Mesnager, Centre National d'Etudes Spatiales (CNES), France
- Coauthor
Mr. Bernard Ruggeri, ThalesAlenia Space, France
- Coauthor
Mr. Eric Maliet, EADS Astrium, France
- Coauthor
Mr. Dominique Pawlak, EADS Astrium, France
- Coauthor
Mr. Sembely Xavier, EADS Astrium, France
- Year
2009
- Abstract
The purpose of the CNES ISIS initiative is to settle the bases for future small satellites platforms and associated control ground segment beyond 2012, for a very large range of missions. Mainly focussed on French defence and bilateral cooperation, there is also a strong will to take into account needs from other European agencies and export missions, so that the product lines based on this standard can be reused for various customers. CNES together with the two prime contractors Astrium Satellites and Thales Alenia Space have undertaken since 2008 a joint system study aiming at defining appropriate standards, system requirements and generic architectures for system, platform and control ground segment. The objectives are focused towards the {\it rationalization of the common services and interfaces} towards the Mission Customer’s Payload and Mission centre. A systematic use of state of the art standards is baselined, so as to ease interface work between platform and payloads, satellite to launcher interface, space-to-ground interface, platform inter-equipment links. Maximum flexibility is searched with respect to payload size and power budget, accommodation capabilities, pointing performances, as well as orbit types or launchers to be addressed. For this, an important aspect of the study is to collect missions requirements (more that 20 mission data sheet were produced, ranging from interplanetary science missions to Earth observation in LEO orbit), and to organise and class the missions requirements along several axes (e.g. payload mass, volume, power consumption, pointing requirements, data acquisition and transmission, mission operational concept, security, autonomy, etc). Following this, a {\it system segmentation} has been produced associated with a limited set of options, so as to cover most of the mission requirements with minimum hardware configurations. The second step of the study is focusing on the technical definition of the core elements which are common to all System segments and options, as well as on the so-called {\it missionisation process}, aiming at guiding mission implementation at minimum cost. The cost efficiency offered to missions will rely on the technical capitalisation through appropriate initial investments (for the core elements) complemented progressively by missions developments feed back into ISIS technical patrimony. The paper will present the organisation and the logic of the ISIS study, then detail the definition of the generic requirements and design baselined for this initiative, together with its field of application. Finally, examples of possible applications of the ISIS initiative to current or upcoming space missions will be given.- Abstract document
- Manuscript document
(absent)