Kepler Tests Ongoing - Some Recovery Still Possible

Kepler Mission Manager Update: Pointing Test, NASA

"While both RW4 and RW2 have spun bi-directionally, friction levels remain higher than would be considered good for an operational wheel. However, it will be important to characterize the stability of the friction over time. A constant friction level may be correctable in the spacecraft's attitude control system, whereas a variable friction level will likely render the wheels unusable.

With the demonstration that both wheels will still move, and the measurement of their friction levels, the functional testing of the reaction wheels is now complete. The next step will be a system-level performance test to see if the wheels can adequately control spacecraft pointing.

... The team anticipates beginning the pointing performance testing on Thursday, August 8, 2013 and will continue into the following week if all goes well. A determination of whether Kepler can return to exoplanet data collection is expected a couple weeks after these pointing tests are complete."

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This page contains a single entry by Marc Boucher published on August 3, 2013 10:01 AM.

NASA's Throwing Curiosity a First Year Anniversary Party was the previous entry in this blog.

Japan's H-IIB Launches HTV4 to the ISS is the next entry in this blog.

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