[FPSPACE] Mir Gyrodynes Fail To Restart

Anatoly Zak agzak@concentric.net
Mon, 22 Jan 2001 15:18:14 -0500


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It looks like this explanation does not address what really hapenned.

This time, high temperature in Kvant-2 caused some fluctation in the electrical
system, which was
detected by the computer system, which, in turn, shut down power supply. This is
the most
probable cause. Since entire incident took place when Mir was out of range of
ground control
station, nobody knows for sure what hapenned.

-- Anatoly Zak
RussianSpaceWeb.com

Dwayne Allen Day wrote:

  On Mon, 22 Jan 2001 JamesOberg@aol.com wrote:

  > The gyroscopes ground to a halt during a sudden power loss last week that
  > disabled the 15-year-old Mir's central computer and its orientation system,
  > prompting officials to put off the launch of the Progress M1 cargo ship for
  > fears the Mir would be too unstable to dock with.

  Quick question:

  There was an earlier failure a few weeks ago.  In that case, the computer
  failure came first due to a software glitch.  This caused the solar panels
  to drift out of alignment.  This statement above implies that the second
  failure was different--that a power failure caused a computer failure.

  Is this the case, or were the two failures the same and this report is
  wrong?

  DDAY

Dwayne Allen Day wrote:

> On Mon, 22 Jan 2001 JamesOberg@aol.com wrote:
>
> > The gyroscopes ground to a halt during a sudden power loss last week that
> > disabled the 15-year-old Mir's central computer and its orientation system,
> > prompting officials to put off the launch of the Progress M1 cargo ship for
> > fears the Mir would be too unstable to dock with.
>
> Quick question:
>
> There was an earlier failure a few weeks ago.  In that case, the computer
> failure came first due to a software glitch.  This caused the solar panels
> to drift out of alignment.  This statement above implies that the second
> failure was different--that a power failure caused a computer failure.
>
> Is this the case, or were the two failures the same and this report is
> wrong?
>
> DDAY
>
> _______________________________________________
> FPSPACE mailing list
> FPSPACE@friends-partners.org
> http://fpmail.friends-partners.org/mailman/listinfo.cgi/fpspace

-- Anatoly Zak
RussianSpaceWeb.com


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It looks like this explanation does not address what really hapenned.

This time, high temperature in Kvant-2 caused some fluctation in the electrical system, which was
detected by the computer system, which, in turn, shut down power supply. This is the most
probable cause. Since entire incident took place when Mir was out of range of ground control
station, nobody knows for sure what hapenned.

-- Anatoly Zak
RussianSpaceWeb.com

Dwayne Allen Day wrote:

  On Mon, 22 Jan 2001 JamesOberg@aol.com wrote:

  > The gyroscopes ground to a halt during a sudden power loss last week that
  > disabled the 15-year-old Mir's central computer and its orientation system,
  > prompting officials to put off the launch of the Progress M1 cargo ship for
  > fears the Mir would be too unstable to dock with.

  Quick question:

  There was an earlier failure a few weeks ago.  In that case, the computer
  failure came first due to a software glitch.  This caused the solar panels
  to drift out of alignment.  This statement above implies that the second
  failure was different--that a power failure caused a computer failure.

  Is this the case, or were the two failures the same and this report is
  wrong?

  DDAY

Dwayne Allen Day wrote:

On Mon, 22 Jan 2001 JamesOberg@aol.com wrote:

> The gyroscopes ground to a halt during a sudden power loss last week that
> disabled the 15-year-old Mir's central computer and its orientation system,
> prompting officials to put off the launch of the Progress M1 cargo ship for
> fears the Mir would be too unstable to dock with.

Quick question:

There was an earlier failure a few weeks ago.  In that case, the computer
failure came first due to a software glitch.  This caused the solar panels
to drift out of alignment.  This statement above implies that the second
failure was different--that a power failure caused a computer failure.

Is this the case, or were the two failures the same and this report is
wrong?

DDAY

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-- Anatoly Zak
RussianSpaceWeb.com
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