Tree of Souls - An Avatar Community Forum - View Single Post - Voyager reaching Solar System's edge
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Old 12-20-2010, 04:18 PM
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Sight Unseen Sight Unseen is offline
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Join Date: Mar 2010
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Impressive indeed. Now that's reliability, especially when you consider how much IC's and Vidicon/equivalent tubes don't like radiation, and Voyager's been exposed to a lot of radiation.

Interesting info:
The Imaging Science Subsystem, made up of a wide angle and a narrow angle camera, is a modified version of the slow scan vidicon camera designs that were used in the earlier Mariner flights.

Only five investigator teams are still supported, though data is collected for two additional instruments.[3] The Flight Data Subsystem (FDS) and a single eight-track digital tape recorder (DTR) provide the data handling functions.

There are three different computer types on the Voyager spacecraft and there are two of each kind. Total number of words among the six computers is about 32K.

Computer Command System (CCS) - 18-bit word, interrupt type processors (2) with 4096 words each of plated wire, non-volatile memory.

Flight Data System (FDS) - 16-bit word machine (2) with modular memories and 8198 words each

Attitude and Articulation Control System (AACS) - 18-bit word machines (2) with 4096 words each.

Uplink communications is via S band (16-bit/s command rate) while an X band transmitter provides downlink telemetry at 160 bit/s normally and 1.4 kbit/s for playback of high-rate plasma wave data. All data is transmitted from and received at the spacecraft via the 3.7-meter high-gain antenna.
Sadly, Voyager won't have enough power to make any measurements by the time it reaches interstellar space.

Last edited by Sight Unseen; 12-20-2010 at 04:22 PM.
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