- 249: prop-vane, Site 3, Wed 09-Aug-2006 22:00:32 MST, Station visit, site 3, replace prop head
Arrived around 16:05, Oncley, Maclean
Wind speed at this site has been dropping to exactly zero
for long periods, as if propeller bearings are bad.
Mast down 16:15
Replaced prop vane propeller head. Bearings on old head
were noisy.
Mast up 16:25
Swapped usbdisk.
- 232: prop-vane, Site 3, Sun 06-Aug-2006 11:29:23 MST, More on the s3 prop
Today we finally noticed in the data that the site 3 prop-vane often reads
low (sometimes 0) wind speeds. The first really noticable instance is Jul 31
at 1900, though there are a few drops earlier that day and probably even a
few days earlier.
data_dump shows that the vane signal is just fine, thus this problem most
likely is simply dirty bearings on the propeller shaft. Steve S. reminds us
that the prop is a removable subassembly on this sensor.
We haven't located the spare prop that Chris's inventory shows should exist
somewhere. (We haven't checked our pickup truck yet.) Nor have we located
any spare bearings in the base. Steve S will send us a package tomorrow with
bearings and/or a spare prop head assembly if one can be found in Boulder.
In any case, we aren't too worried, since this station also has sonic, which
seems to be running fine.
- 176: prop-vane, Site 8, Tue 25-Jul-2006 17:52:46 MDT, Station visit site 8: wind direction wrong
Gordon found wind direction off by 180 degrees.
Changed BD from 249 to 69 at 14:42 MST
- 110: prop-vane, Site 2, Fri 14-Jul-2006 20:32:14 MDT, st2 Visit: boom angle, slight change
14Jul06 14:00 - 17:30
Purpose: Intermittent outages last night / routine maintenance
BD was 044, now set 041 per slight adjustment in tower alignment
- 48: prop-vane, Site 4, Wed 05-Jul-2006 19:31:12 MDT, st 4, E: New boom angle entry
At 1200 LT the a new boom angle (78 degrees) was entered into the RMY. This replaced the previous value of 74.
- 45: prop-vane, Site 7, Wed 05-Jul-2006 18:27:05 MDT, st7 visit: boom angle
5jul06 13:15-14:30
Checked boom angle:
my compass = 356
rmy 'BD' = 355
i did not change the internal rmy value
- 42: prop-vane, Site 9, Wed 05-Jul-2006 18:18:08 MDT, st9 visit: boom angle
5jul06 11:30-12:30
Checked boom angle:
my compass = 251
rmy 'BD' = 249
i did not change the internal rmy value
- 23: prop-vane, Site 8, Sun 02-Jul-2006 22:21:43 MDT, Boom angle Site 8 entered
RMY boom angle is 249.
This value replaced the previously existing value of 108 at 1655 2 July.
- 11: prop-vane, Site 3, Sun 02-Jul-2006 20:38:57 MDT, st3 Reset boom angle in rmy
2Jul06, 12:50-14:50 MST
Purpose: station down, shoot boom angle, install new xml
RMY Boom Direction:
Shot boom angle and put it into the rmy: 277.
Verified consistency with observed conditions.
Also put these numbers in entry 6
CSAT pointing towards 179
- 6: prop-vane, Site all, Sat 01-Jul-2006 22:13:01 MDT, Boom Angles
Stn RMY Boom-Angle CSAT angle
1 172
2
3 277 179 (away from sonic)
4
5
6
7
8 249
9
10