Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986asdy.conf.1077d&link_type=abstract
IN: Astrodynamics 1985; Proceedings of the Conference, Vail, CO, August 12-15, 1985. Part 2 (A86-43201 20-12). San Diego, CA, Un
Astronomy and Astrophysics
Astronomy
Eureca (Esa), Orbit Calculation, Orbital Maneuvering Vehicles, Orbit Decay, Orbit Perturbation, Recoverable Spacecraft, Satellite Control, Transfer Orbits
Scientific paper
EURECA (EUropean REtrievable CArrier) is a reuseable platform which will be deployed and retrieved by the Shuttle. The paper describes manoeuvre and orbit determination strategies which have been developed to meet the requirements of the EURECA payload and those imposed by NASA retrieval policy. The initial altitude of the operational orbit is selected in such a way as to minimise the expected overall fuel usage for the mission. Optimisation of maneouvres based on a medium thrust level of 70 N has been studied. The accuracy feasible for orbit determination and prediction has been analysed for the most important phases of the mission and an error propagation made through the ascent and descent manoeuvres. A strategy is proposed for the manoeuvres which are to be performed during a period of one month prior to, and 2 to 3 days following the Shuttle launch.
Dow John M.
Mugellesi R.
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