| .....The Mars 2 and Mars
3 missions consisted of identical
spacecraft, each with a bus/orbiter
module and an attached descent/lander
module. The primary scientific objectives
of the Mars 3 orbiter were to image the
martian surface and clouds, determine the
temperature on Mars, study the
topography, composition and physical
properties of the surface, measure
properties of the atmosphere, monitor
solar radiation, the solar wind and the
interplanetary and martian magnetic
fields, and act as a communications relay
to send signals from the lander to Earth. .....The attached
orbiter/bus and descent module had a mass
of approximately 4650 kg at launch (including
fuel) and was 4.1 meters high, 5.9 meters
across the two solar panel wings, and had
a base diameter of 2 meters. The mass of
the orbiter/bus was about 3440 kg fully
fueled, and the fueled mass of the
descent/lander module was about 1210 kg.
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