IHOP02: Logbook Entries

IHOP02: Prop_Vane Messages: 6 Entries..

Return to Logbook Contents Page
Entry Date Title Site Author #Graphics
317 Mon 29-Jul-2002Post calibration: anemometer thresholdallsemmer
262 Wed 19-Jun-2002Prop at station 6?6semmer
145 Sun 26-May-2002Cycled powsr on Sbus to restart prop direction6horst
75 Thu 16-May-2002Prop vane azimuth and PO output5maclean
49 Sat 11-May-2002Recalibrated prop vane direction encoder6horst
41 Sat 11-May-2002prop and rad stand azimuths at site 99maclean


317: Prop_Vane, Site all, Mon 29-Jul-2002 12:41:35 MDT, Post calibration: anemometer threshold
  Each anemometer was tested in the tunnel from 0 to 4 m/s in .1 to .2 m/s
increments (.1 from 0 to 1 m/s, .2 from 1 to 4 m/s). The tunnel reference
propeller was used as the reference source. There were good agreements with the
reference speed once the test anemometers got going. 

sensor	site*	starting threshold
00245	3	.68
00315	5	.65
00314	9	.52
00313	8	.45**
00318	7	.56
00319	6	.77
35500	2	2.2
38768	4	.30**
38769	1	.61
38770	spare	.42**

*see entry 314
**started at same time as reference






262: Prop_Vane, Site 6, Wed 19-Jun-2002 11:14:48 CDT, Prop at station 6?
Station 6 prop may have bad bearings or the sonic is reading high.
A difference plot between the 10m prop and the sonic shows the
prop lower then the sonic. This change started taking place on the 17th.
  Comparing the two sensors to station 4 and 5, the sonic seems to
be reading high.

145: Prop_Vane, Site 6, Sun 26-May-2002 17:38:22 CDT, Cycled powsr on Sbus to restart prop direction
Gordon recycled Sbus power in order to restart the prop vane.  Its
direction was stuck at -99.  We did not recalibrate the prop.  Its 
coefficients were:

COMMANDS: BD CD FC FR MR OD OS PH PM PO propXXX SAxx TW ZN                      ERROR: No response from sBus                                                    
Enter Command --> PO                                                            PIXEL COMPARE RATIOS:                                                           058 056 060 061 062 063 066 067 067 068 071 074 077 078 081 081                 082 083 085 085 087 089 089 091 092 092 094 095 095 096 097 097                 097 099 099 100 100 100 098 098 097 097 095 095 092 091 090 088                 087 086 083 083 081 080 079 077 076 072 071 070 068 067 064 062                 
        ADDR: 12                                                                        PROP: 303                                                                   BOOM DIR: 176                                                                  UNIT CODE: 3 (0-KTS, 1-MPH, 2-KMPH, 3-M/S)                                     RATE DELAY: 30 x 32.768 mS                                                      FLASH TIME: 07                                                                ERROR: No response from sBus

Gordon looked for water in the TRH plug, which had accompanied the 
same symptom at station 5.  He found the plug to be dry.



75: Prop_Vane, Site 5, Thu 16-May-2002 10:00:27 CDT, Prop vane azimuth and PO output
after raising mast during site visit on May 12, checked the azimuths
with KVH data scope (declination=6.0 east)


From the sonic w and prop Spd data it appears the mast was lowered 
at about 18:10 CDT and raised at 18:45, May 12

Shot angles with KVH data scope (declination=6.0 east)
Prop boom: 177

Prop BD was 176, John set it to 177.  Here is the prop output:

  Enter sensor address (00 -- ff) -> 12
  Opening communications to "/tyCo/3".  Type a D when done
  COMMANDS: BD CD FC FR MR OD OS PH PM PO propXXX SAxx TW ZN
  ERROR: No response from sBus
  Enter Command --> PO
  PIXEL COMPARE RATIOS:
  046 045 048 050 051 051 052 057 059 060 061 062 065 066 068 070
  073 074 076 078 080 083 086 087 086 092 094 095 096 098 099 100
  098 099 099 097 097 097 098 097 096 095 094 094 093 091 091 089
  089 088 086 085 083 083 080 077 079 076 073 072 070 070 067 064
  ADDR: 12
  PROP: 300
  BOOM DIR: 176
  UNIT CODE: 3 (0-KTS, 1-MPH, 2-KMPH, 3-M/S)
  RATE DELAY: 30 x 32.768 mS
  FLASH TIME: 03
  ERROR: No response from sBus
  Enter Command --> BD177
  ERROR: No response from sBus
  Enter Command --> PO
  PIXEL COMPARE RATIOS:
  046 045 048 050 051 051 052 057 059 060 061 062 065 066 068 070
  073 074 076 078 080 083 086 087 086 092 094 095 096 098 099 100
  098 099 099 097 097 097 098 097 096 095 094 094 093 091 091 089
  089 088 086 085 083 083 080 077 079 076 073 072 070 070 067 064
  ADDR: 12
  PROP: 300
  BOOM DIR: 177
  UNIT CODE: 3 (0-KTS, 1-MPH, 2-KMPH, 3-M/S)
  RATE DELAY: 30 x 32.768 mS
  FLASH TIME: 03
  ERROR: No response from sBus
  Enter Command -->
  Closing communications


49: Prop_Vane, Site 6, Sat 11-May-2002 16:56:15 CDT, Recalibrated prop vane direction encoder
The wind direction at site 6 was stuck at ~ 260 degrees.  This was
fixed around 1830 GMT by recalibrating the prop vane direction encoder.

It appears from the sonic data that the mast was lowered 
from 18:15 - 18:30 GMT, May 11.




41: Prop_Vane, Site 9, Sat 11-May-2002 08:31:51 CDT, prop and rad stand azimuths at site 9
Measured the bearing of the rad stand with the data-scope:
   92.2 deg, 91.1 deg

Prop boom:  359.2, 359.1, 358.8.

Changed the prop BD parameter from 176 to 179.


Previously changed batteries in the KVH data scope
and did the cal procedure (passed with a good 8 grade!), with 
a declination of 5 degrees east.