urn:nasa:pds:context:instrument_host:spacecraft.mr9 1.0 1.7.0.0 Product_Context 2016-10-01 1.0 extracted metadata from PDS3 catalog and modified to comply with PDS4 Information Model urn:nasa:pds:context:investigation:mission.mariner71::1.0 instrument_host_to_investigation urn:nasa:pds:context:instrument:iris.mr9::1.0 instrument_host_to_instrument urn:nasa:pds:context:instrument:iss.mr9::1.0 instrument_host_to_instrument urn:nasa:pds:context:target:planet.mars::1.0 instrument_host_to_target Mariner Mars 1971 Project Final Report, Science Experiment Reports, JPL Technical Report 32-1550, Vol. V, Aug. 20, 1973. reference.MR91971SCITEAMS1973 Steinbacher, R.H., and S.Z. Gunter, Mariner Mars 71 Experiments Introduction, ICARUS-International Journal of Solar System Studies Vol. 12, No. 1, January 1970. reference.STEINBACHER-GUN1970 MARINER 9 Spacecraft MR9 Spacecraft Overview =================== The design of Mariner Mars 1971 spacecraft was similar to that of Mariner Mars 1969, but incorporated changes required by the different payload complements, changes required to increase reliability for a nominal transit cruise and a 90-day-in-orbit operational lifetime, and changes required for the spacecraft to accomplish the mission. The spacecraft weighed approximately 2238 lbs; of this weight 1050 lb was propellant required to correct the transit trajectory and to perform the orbital insertion and 152 lb. which constituted the science payload. The spacecraft configuration consisted of four solar panels, a low-gain antenna, a maneuver engine, a Canopus sensor, two propulsion tanks, two propulsion pressurization tanks, temperature control louvers, four acquisition sun sensors, a cruise sun sensor, a medium-gain antenna, a high-gain antenna and a scan platform. Platform Descriptions ===================== The scan platform was an articulating instrument mount providing a pointing selection capability of 215 degrees in azimuth and 69 degrees in elevation. The scan platform contained the following instruments; the infrared radiometer, the wide-angle TV, the ultraviolet spectrometer, the narrow- angle TV and the IR Interferometer spectrometer.