Problems with part of NASA’s Voyager 1 planetary probe data have been resolved | sorae portal site to space

NASA’s Jet Propulsion Laboratory (JPL) announced on August 30 that the planetary probe will soon celebrate its 45th anniversary since launch.“Voyager 1”Around,Fixed an issue with some data showing the status of the aircraft.announce it

Voyager 1, launched at 21:56 on September 5, 1977 JST, was launched in May 1979.Jupiterin November 1980SaturnFrom exploration by flight. After that, it continued to fly outside the solar system, and 10 years ago in August 2012, it was in the area affected by the solar wind.“Heliosphere”leave theinterstellar spaceConfirmed Arrival As of August 31, 2022, it will be Voyager 1About 23.5 billion km from Earth(approximately 157 astronomical units), one-way communication with Earth takes 21 hours, 48 ​​minutes, and 13 seconds.

As of May 2022, Voyager 1「AACS」A problem was found with the case data for a subsystem called (Attitude Articulation and Control Subsystem). AACS is Voyager 1’sposition controlThis system is necessary to communicate with the distant Earth.The role of fine alignment of the high gain (high gain) antenna with the direction of the earthResponsible for According to JPL, AACS seems to be working fine, butData sent to Earth does not reflect its state and sometimes appears to be randomly generated.It is said that there are cases.

Connection:The 45th anniversary of the launch of the planetary probe “Voyager 1” A problem was found in some of the data that reached Earth

Data indicating the status of AACSThe cause of “garbled characters”JPL Operations Team, who exploredAn onboard computer that stopped working years agoBecause I started sending data through itdata corruptionI figured out what I did. Commands to resume communications were already sent through the correct computer, JPL, Voyager 1 and 2 project manager,Susan DowdHe said, “I am happy that remote tracking is back.”

Although normal data reception is resumed,We still don’t know why AACS started sending data through the wrong computer. According to JPL, it’s also possible that AACS received a wrong command generated by another onboard computer, which could mean something was wrong with the plane.

Operations teamOngoing investigation into the root causeBut to Voyager 1There are no long-term effectsI think too. “To help identify the bug that caused the telemetry problem, we’ll be reading a full AACS memory to find out what happened, Dodd said. We are cautiously optimistic. ”But we need more investigation. He said.

Connection:45 years after the launch of the planetary probe “Voyager 2”, the exploration mission continues

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• Image Credit: NASA/JPL-Caltech
• NASA/JPL Engineers solved a data glitch on NASA’s Voyager 1

Text / Matsumura Takehiro