Physics
Scientific paper
Mar 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985rpspr.......37z&link_type=abstract
In its USSR Rept.: Space (JPRS-USP-85-003) p 37-38 (SEE N85-25284 15-12) Transl. into ENGLISH from Sov. Estoniya (USSR), 16 D
Physics
Flight Plans, Halley'S Comet, Satellite Instruments, Vega Launch Vehicle, Venus Probes, Aerostatics, Flyby Missions, Landing Modules, Mission Planning, Stabilized Platforms, Venera Satellites
Scientific paper
A brief background commentary on the planning of international space projects to study Halley's Comet is given. The three main objectives of the Vega mission--investigation of Venus with the aid of a landing module and an aerostatic probe, and of Halley's Comet from a flyby trajectory--presents its own specific requirements to the ballistic scheme of flight. The scheme ensures that the landing module (which does not have its own control systems) is guided into Venus' atmosphere with the prescribed entry conditions. The station itself, in the process of the landing module's descent following its release and its operation on the surface, must move in a very precise manner in the zone of communications with the module, because the station will serve as a relay for the module's signals to Earth. Modifications made in the Venera stations to toughen them for flying through the comet's coma are discussed, and the stations' instrumentation are described.
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