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Operational Restrictions Due to Single-Gyro Mode

Francis Vandenbussche explained the operational restrictions resulting from the loss of gyros A and C (annex 5), and polled the PIs about the effect that abandoning the roll steering law could have in the operations and science coming from their instruments. This would imply no North/South spacecraft orientation during several weeks per year in order to always keep a bright start in the SSUs. The result of the poll was:

There was an agreement on a moratorium on any special operations (rolls and offpoints) until next SWT. At that time, and taking into account the report of the re-certification review, a thorough discussion will be held on the feasibility of any of these types of operations.

SOHO Archive
Tue Nov 10 10:07:04 EST 1998