RUSSIAN SERVICE MODULE DATA MANAGEMENT-SYSTEM DESIGNED AND DEVELOPED BY ESA INDUSTRY

In frame of the European-Russian cooperation within the International Space Station Program a Fault Tolerant Computer assembly with associat ed crew-control station is under development in European industry. The on-board equipment, which is supposed to be accommodated within the d ata management and guidance navigation control system of the Russian S ervice Module, is complemented with a complete set of ground hard-and software required for the application software development and verific ation process as well as Service Module System integration and check-o ut. For the on-board fault tolerant computer a new mechanism, that pro vides the required two failure tolerant feature is implemented, which is based on the so-called Byzantine Failure algorithm. (1) The Ground segment is based on Columbus Ground Software (CGS) which is a consiste nt set of software products which form in different combinations the b asis for a set of integrated ground facilities, also in use for the Sp ace Station Mission Built Facility (MBF) and the System Verification F acility (SVF) at NASA. The project is in an advanced stage, engineerin g models me available, development and test facilities used to generat e and rest application software are in operation in Russia. The paper will provide initial test results and information on experience gained within the integration and verification process for both, the on-boar d and ground hardware and software. (C) 1997 International Astronautic al Federation. Published by Elsevier Science Ltd.