Print Email Facebook Twitter IRAS on-board software Title IRAS on-board software Author Hameetman, G.J. Institution National Aerospace Laboratory NLR Date 1977-10-03 Abstract The infra Red Astronomical Satellite IRAS will be laimched in February I98I for a mission of one year duration. The purpose of the mission is to produce a full sky catalogue in the infrared waveband. The IRAS satellite will be equipped with an on-board computer system to control the satellite and to execute the measurements necessary to fulfil the mission. The software in the on-board computer is required to fulfil two conflicting requirements: - to provide a reliable system that under no circumstances allow direct radiation from sxm and earth into the experiment telescope - to provide a flexible measurement tool that will use the 1 year mission diiration (dictated by the amount of cooling agent on-board) as efficient as possible. This paper describes the on-board software system and shows the compromise that has been chosen to fulfil the conflicting requirements i.e. the work division over read only and random access memory. Subject satellite controlsatellite attitude controlreliabilityIRASairborne/spaceborne computerscomputer systems programsdata recordingdata storage To reference this document use: http://resolver.tudelft.nl/uuid:9001ad6c-8b8d-4dc8-a1de-7a90cea313d2 Publisher Nationaal Lucht- en Ruimtevaartlaboratorium Access restriction Campus only Source NLR MP 77037 U Part of collection Aerospace Engineering Reports Document type report Rights (c) 1977 National Aerospace Laboratory NLR Files PDF 77037.pdf 10.33 MB Close viewer /islandora/object/uuid:9001ad6c-8b8d-4dc8-a1de-7a90cea313d2/datastream/OBJ/view