Computer Science – Performance
Scientific paper
Jan 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002iaf..confe.936r&link_type=abstract
IAF abstracts, 34th COSPAR Scientific Assembly, The Second World Space Congress, held 10-19 October, 2002 in Houston, TX, USA.,
Computer Science
Performance
Scientific paper
flight PSLV-C3 on 22nd October 2001 from Sriharikota Launch Range (SHAR). It was the fifth successive successful mission proving the reliability and versatility of the medium lift vehicle developed by Indian Space Research Organisation (ISRO). payloads, viz, BIRD from M/s DLR, Germany and PROBA from M/s Verhaert, Belgium were also deployed. While TES and BIRD were injected into a nominal 568 km circular sun synchronous polar orbit, PROBA was released at a higher altitude into a 568 X 638 km elliptical orbit. An orbit raise manoeuvre utilising guidance margin reserve propellant available in the fourth stage was performed prior to PROBA injection. The three axis stabilised orbit raise burn was executed by the axial RCS thrusters firing in off-modulated mode. The high precision achieved in the orbital parameters of all three satellites has validated the navigation, guidance and control scheme implemented. The successful realisation of this multi-orbit mission by ISRO has opened up opportunities and mission flexibility for small satellite launches on PSLV, which has a provision to carry two 120 kg class satellites as passenger payloads. perform the multi-orbit mission. The on-board systems and ground segment features in terms of both hardware and software elements including the Preliminary Orbit Determination (POD) scheme for PROBA deployment are described. Further developments on PSLV with respect to high performance third stage (HPS3) and single engine fourth stage (L1) towards performance enhancement and mission flexibility are presented. Forthcoming missions and commercial launch opportunities on PSLV are highlighted.
Balakrishnan Sivaraman
Ramakrishnan Srinivasan
Somanath S.
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