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20090508 report
CW/CCW inclinometry updated
08 May 2009
A full cw/ccw inclinomtey run was performed on May 2nd and the new track model installed on May 4th.
Datasets El Dirn HST mean leg temperatures Humidity
start start middle end %
(20090412 89 cw 07:00 -1.0 0.1 0.4 25
20090412 89 ccw 08:45 0.4 0.8 1.3 40)
20090502 89 cw 07:45 7.2 7.6 7.6 4
20090502 89 ccw 09:30 7.6 8.1 8.8 5
The new data are recorded from the 3 active inclinometers and one of the
two strain gauge channels.
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The differences between the (CW) model derived from the new data
and data taken on 12th April are shown below:
Click for larger image
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The resulting rms scatters in the differences in (F1,F2,F3) are (0.54", 0.79", 0.28") cf. (0.65", 0.68", 0.89") last time.
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The
CW-CCW profile is normal, and is used to generate a hybrid track model
which was installed on the 4th May 2009.
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The symmetry and
the strain gauge data
for the one remaining channel looks generally as expected. However the load on the wheels shows another drop, raising a flag especially on wheel 4 where the loading is as low as it has ever been. This is likely corrected by an adjustment of the central bearing.
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