Comet rendezvous

Details Comet rendezvous Comet rendezvous

Aug 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jbis...37..361d&link_type=abstract

British Interplanetary Society, Journal (Solar System Exploration) (ISSN 0007-084X), vol. 37, Aug. 1984, p. 361-365. NASA-suppor

Computer Science

Comets, Mariner Mark 2 Spacecraft, Space Rendezvous, Attitude Control, Comet Nuclei, Spacecraft Configurations, Spacecraft Instruments, Spacecraft Propulsion

Scientific paper

A Mariner Mark II spacecraft rendezvous mission with comet Kopff has been recommended by NASA's Solar System Exploration Committee, and is scheduled for a Shuttle launch in 1990. The spacecraft, which is scheduled to encounter the comet in 1994, will conduct a series of experiments including the study of the cometary nucleus, coma, and tail during perihelion passage; the determination of the nucleus and coma chemical/isotropic composition; the description of the nucleus's size, mass, rotation period, and pole occultation; distinctions of gas and dust hydrodynamics; and distinctions of solar wind interactions with the coma. The three-axis-stabilized spacecraft will be modular in design, and will incorporate a 490-Newton Insat engine, Viking Orbiter propulsion tanks, an Integrated Platform Pointing and Attitude Control Subsystem, and several scientific instruments. The spacecraft's Radio Frequency Subsystem will only use X-band telemetry with a downlink frequency of 8415 MHz, and an uplink frequency of 7161 MHz. The power sources in the present design include one radioisotope thermoelectric generator, three 3 Ah batteries, and a solar panel of approximately 7 sq m.

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