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  #1  
Old 07-06-2022, 08:29 AM
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Winston2021 Winston2021 is offline
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Default NASA has lost contact with CAPSTONE

NASA Spacecraft Sent to Unexplored Orbit for Moon Outpost Goes Silent
NASA has lost contact with CAPSTONE, a spacecraft sent to an unexplored orbit as a test for an outpost around the Moon called the Gateway.
July 5, 2022


https://www.vice.com/en/article/7k8...ost-goes-silent

CAPSTONE Update on Communications Issue

https://blogs.nasa.gov/artemis/2022...ications-issue/
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Old 07-06-2022, 01:45 PM
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Contact re-established. No further info given yet. Per NASA website.

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Old 07-06-2022, 05:04 PM
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Some additional details. Looks like they are still trying to determine the exact root cause of the communications issue.

Blog link: https://blogs.nasa.gov/artemis/2022...first-maneuver/


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Old 07-09-2022, 06:52 AM
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Quote:
Originally Posted by Earl
Some additional details. Looks like they are still trying to determine the exact root cause of the communications issue.

Blog link: https://blogs.nasa.gov/artemis/2022...first-maneuver/


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Mission Team Determines Cause of NASA’s CAPSTONE Communications Issues

https://scitechdaily.com/nasas-caps...ications-issue/

During the commissioning of NASA’s CAPSTONE spacecraft, the Deep Space Network team noted inconsistent ranging data. While investigating this issue, the spacecraft operations team attempted to retrieve diagnostic data on the spacecraft’s radio and sent an incorrectly formatted command that made the radio inoperable. The spacecraft fault detection system should have rebooted the radio immediately but did not because of a fault in the spacecraft flight software.

Eventually, CAPSTONE’s autonomous flight software system cleared the fault and brought the spacecraft back into communication with the ground, allowing the team to implement recovery procedures and begin commanding the spacecraft again.

While CAPSTONE was out of contact with Earth, the spacecraft autonomously maintained proper orientation to keep its antenna pointed towards Earth and allow the solar panels to keep the battery charged. CAPSTONE also used its thrusters to perform a standard maneuver to dump excess momentum from its reaction wheels, which are internal wheels that help the spacecraft rotate and point itself.
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Old 07-12-2022, 05:29 PM
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Quote:
Originally Posted by Winston2021
During the commissioning of NASA’s CAPSTONE spacecraft, the Deep Space Network team noted inconsistent ranging data. While investigating this issue, the spacecraft operations team attempted to retrieve diagnostic data on the spacecraft’s radio and sent an incorrectly formatted command that made the radio inoperable. The spacecraft fault detection system should have rebooted the radio immediately but did not because of a fault in the spacecraft flight software.

..And they didn't fix it before launch? Got to be kidding.
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Old 07-13-2022, 12:22 PM
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Quote:
Originally Posted by kapton
..And they didn't fix it before launch? Got to be kidding.

I think they mean they noted issues during initial communication with the satellite after launch.
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Old 07-15-2022, 03:26 PM
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Quote:
Originally Posted by tbzep
I think they mean they noted issues during initial communication with the satellite after launch.

Ahh, yes. I read 'commissioning' as on the ground, preflight 'testing'.
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