According to NASA, engineers revived the satellite on Saturday (July 17) after identifying the possibility of glitches “guaranteeing a stable voltage supply to the payload computer hardware” at Hubble’s power control unit. I did. ..
The payload computer crashed suddenly on June 13th, automatically taking all the satellite’s scientific equipment offline and in a “safe mode” configuration. Live science previously reported.. The technician tried to restart the sick computer, but failed several times.
But last week, NASA engineers discovered that the glitch was likely due to a special protection circuit that prevented the satellite’s power control unit from sending too much or too little power to the payload computer. did. According to NASA, the circuit automatically tells the payload computer to shut down when the voltage supply exceeds a safe operating level.
“Team analysis shows that the voltage level from the regulator is out of the acceptable level (which causes the secondary protection circuit to trip) or the secondary protection circuit deteriorates over time and gets stuck in this prohibited state. It suggests that you are. ” NASA wrote July 14th.
NASA engineers have avoided this problem by switching operations to the satellite backup payload computer and activating the backup power control unit.
When this backup hardware boots, the satellite should be able to continue observing space — and hopefully work with the new James Webb Space Telescope. Scheduled to be released later this year — According to NASA, over the years to come. Officials added that scheduled space observations that the satellite missed during the month in safe mode will be rescheduled at a later date.
Originally published in Live Science.
The Hubble Telescope has revived after a harsh moon of darkness.This was the problem
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