The rotor had one 4.8 meter high-gain antenna and two low-gain antennas, but the high-gain antenna did not deploy so data were returned from Jupiter at rates far below the design maxima using the low-gain antennas. Galileo was an unmanned spacecraft sent by NASA to study the planet Jupiter and its moons. The telecommunications subsystem was designed to transmit data to Earth at rates ranging from 10 bps to a maximum of 134 kilobits per second at S-band and X-band frequencies. The command and data subsystem consisted of multiple microprocessors and a high-speed data bus. Propulsion was provided by a bipropellant system of twelve 10-newton thrusters and one 400 newton engine.
The spacecraft power source was a pair of radioisotope thermoelectric generators. There were eleven subsystems and nine scientific instruments on the orbiter. Like the famed astronomer for which it was named, Galileo would study the King of Planets over an extended period, in finer detail than was ever possible before. The rotor and stator were connected by a spin bearing assembly, which conducted power via slip rings and data signals via rotary transformers. Four spacecraft (Pioneer 10 & 11, then Voyager 1 & 2) had previously flown by the Jupiter system, but the Galileo mission was the first to enter orbit around the planet. This design accommodated the different requirements of remote sensing instruments (mounted on the stator) and fields and particles instruments (mounted on the rotor) spacecraft engineering subsystems were also mounted on the rotor.
The rotor (or spun section) turned at approximately three revolutions per minute while the stator (or despun section) maintained a fixed orientation in space. Probe instruments investigated the chemical composition and the physical. Atmospheric entry took place on 7 December 1995 as the orbiter tracked the probe and recorded its data for later relay to Earth. The rotor had one 4.8 meter high-gain antenna and two low-gain antennas, but the high-gain antenna did not deploy so data were returned from Jupiter at rates far below the design maxima using the low-gain antennas.Galileo used a dual-spin attitude stabilization system. Features: The Galileo Atmospheric Probe was released from the Galileo orbiter spacecraft in July 1995, about 100 days before arrival at Jupiter. The command and data subsystem consisted of multiple microprocessors and a high-speed data bus. The Galileo Clockwork is designed as a drop-in replacement for the existing Afterburner Clockwork module, and uses the same basic core components as the original Orbiter design for the drive system, maintaining a 7.5:1 gear ratio and using the larger Bonctech gears, which allow more grip on the filament.
The rotor and stator were connected by a spin bearing assembly, which conducted power via slip rings and data signals via rotary transformers. Galileo used a dual-spin attitude stabilization system.
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