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20060823 report
CW inclinometry OK
A central bearing load adjustment was done in the afternoon. Tomas Chylek
reports:
"The scheduled central bearing adjustment was successfully
performed by LLJ, JNK and TCH. The load distribution between
the central bearing and the rollers has been kept at 85%/15% of the
total antenna weight. The full results are available . . "
here
- Current antenna mass: 103 655 kg (corresponds to hydraulic pressure
6520 psi)
- load on central bearing: 864,327 N
- total load on azimuth rollers: 152,538 N
- Target adjustment achieved with 3.2% LVDT error
A CW inclinometry run followed, but not before the 'Filter' switch on
the inclinometer in the cabin (the 'TMU'-inclinometer) was set to its correct position -
OFF !
Datasets El Dirn HST mean leg temperatures Humidity
start start middle end %
( 20060129 89 cw 19:40 5.1 5.1 5.0 22
20060821 89 cw 00:29 8.0 7.4 7.0 -- )
20060822 89 cw 18:00 - - - --
(The datafile was given a UT-related name !)
The data stream recorded is from the 3 active inclinometers only:
no strain gauge data, for instance.
The raw data from channels 1,4,7 (inclinometer X-axes), 2,5,8 (Y-axes) and
3,6,9 (temperature) are shown below:
Click on images for better view
The data are v.clean and show none of the problems seen
a day or so ago.
The (pure CW) track model derived from these data is:
and the new CW model was merged with the
(CW-CCW) template from 2005
to create a
hybrid track model,
which was installed at HST 21:00 on 22 August 2006.
The difference between the new (CW) mode and that of
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