VOCALS Summary of Instrument Calibration Factors
Summary of Calibration Factors
C-130 - Basic VOCALS Configuration
Project #8-115
Wood et al

Summary of Calibration Factors
C-130 - Basic VOCALS Configuration
Project #8-115
Wood et al

Pre-Calibration - 9/24/08

Variable Param Name C1 C2 C3
Dynamic Pressure-Fuselage L. (hPa) QCF 0.391 17.232 -.0039
Dynamic Pressure-Radome (hPa) QCR -1.626 17.304 -.0051
Dynamic Pressure-Fuselage R. (hPa) QCFR -0.828 13.798 -.0046
Total Temperature-Radome Right (oC) TTRR -64.553 25.126 -.1905
Total Temperature-Radome Left (oC) TTRL -62.603 24.727 -.1260
Total Temperature:Heated- Wing (oC) TTWH -65.961 26.727 -.3219
Remote Surface Temp. Bot. (oC) RSTB -47.098 8.434 .1757
Remote Surface Temp.-Bot. (oC) RSTB1 -53.531 10.405 .0201
Remote Surface Temp. Top. (oC) RSTT -55.600 11.723 -.0960
Downward Shortwave Irrad. (W/m2) SWT+ -24.490 1071.800 .3784
Upward Shortwave Irrad. (W/m2) SWB+ -12.226 1077.620 -.0622
Downward Infrared Irrad. (W/m2) IRT -1194.000 2817.800 -43.803
Upward Infrared Irrad. (W/m2) IRB -1074.500 2540.160 120.528
Downward Ultraviolet Irrad. (W/m2) UVT+ -1.064 45.091 -.0029
Upward Ultraviolet Irrad. (W/m2) UVB+ -0.056 16.225 .0000
Vertical Press. Diff. Radome(mb) ADIFR -0.016 6.934 .0055
Horizontal Press. Diff. Radome(mb) BDIFR -0.032 5.138 .0001
Cabin Pressure (hPa) PCAB -1.194 108.496 -.0272
CN Inlet Pressure (hPa) PCN 9.254 106.036 -.0205
CN Flow Rate (slpm) FCN 0.000 0.232 .0000
Dew Point Sensor Bottom (C) DPB 0.0 1.0 .0
Dew Point Sensor Top (C) DPT 0.0 1.0 .0

+ Corrected for systematic offset

Post Calibration - 12/01/08

Variable Param Name C1 C2 C3__
Dynamic Pressure-Fuselage L. (hPa) QCF 0.643 17.202 -.0038
Dynamic Pressure-Radome (hPa) QCR -1.116 17.317 -.0065
Dynamic Pressure-Fuselage R. (hPa) QCFR -0.420 13.790 -.0052
Total Temperature-Radome Right (oC) TTRR -64.356 25.088 -.1832
Total Temperature-Radome Left (oC) TTRL -62.515 24.662 -.1249
Total Temperature: Heated- Wing(oC) TTWH* -66.238 26.785 -.3330
Remote Surface Temp. Bot. (oC) RSTB -51.418 9.723 .0546
Remote Surface Temp.-Bot. (oC) RSTB1 -52.796 10.006 .0370
Remote Surface Temp. Top. (oC) RSTT -55.457 10.332 .0413
Downward Shortwave Irrad. (W/m2) SWT -28.677 1068.777 .3254
Upward Shortwave Irrad. (W/m2) SWB -12.441 1079.100 .0880
Downward Infrared Irrad. (W/m2) IRT# -1194.000 2817.896 -43.803
Upward Infrared Irrad. (W/m2) IRB -1065.462 2544.200 125.080
Downward Ultraviolet Irrad. (W/m2) UVT -1.174 44.979 -.0041
Upward Ultraviolet Irrad. (W/m2) UVB -0.109 16.172 .0045
Vertical Press. Diff. Radome(mb) ADIFR -0.027 6.926 .0059
Horizontal Press. Diff. Radome(mb) BDIFR -0.113 5.131 .0000
Cabin Pressure (hPa) PCAB -1.864 108.310 -.0277
CN Inlet Pressure (hPa) PCN 9.495 105.796 -.0117
Dew Point Sensor Bottom (C) DPB# -0.720 1.057 -.0003
Dew Point Sensor Top (C) DPT# -0.392 1.006 -.0005
IR Dome Temperature Top (C) DTT 58.300 -25.966 3.2060
IR Dome Temperature Bottom (C) DTB 58.400 -26.190 3.2520
IR Sink Temperature Top (C) STT 58.200 -26.173 3.2580
IR Sink Temperature Bottom (C) STB 58.600 -26.228 3.2560

# Post cal used in final processing.

Calibration Maneuvers -

RAF uses sets of in-flight maneuvers specifically designed to help evaluate the performance of the 3-D wind measurement system on the aircraft. Sets of maneuvers were flown on one test flight and one research flight: TF01, RF10 and RF11 respectively. In each case the variations observed fell within acceptable limits.

PMS - 1-D Probe Bin Sizes

The SPPP100, SPP200, SPP300 and CDP probes were used on the project. The minimum droplet size (microns) for each sampling bin are listed below:

  SPP100* (Range 0) SPP200 SPP300 CDP
bin#1 2.275 um 0.108 um 0.20 um 1.0 um
bin#2 3.45 0.122 0.26 2.18
bin#3 4.625 0.134 0.320 3.36
bin#4 5.80 0.143 0.38 4.54
bin#5 6.975 0.152 0.44 5.72
bin#6 8.15 0.160 0.50 6.90
bin#7 9.325 0.168 0.56 8.08
bin#8 10.50 0.176 0.62 9.26
bin#9 11.675 0.185 0.68 10.44
bin#10 12.85 0.197 0.80 11.62
bin#11 14.025 0.210 1.75 12.80
bin#12 15.20 0.227 2.70 13.98
bin#13 16.375 0.247 3.65 15.16
bin#14 17.55 0.273 4.60 16.34
bin#15 18.725 0.303 5.55 17.52
bin#16 19.90 0.339 6.50 18.70
bin#17 21.075 0.426 7.45 19.88
bin#18 22.25 0.570 8.40 21.06
bin#19 23.425 0.721 9.35 22.24
bin#20 24.60 0.880 10.30 23.42
bin#21 25.775 1.047 11.25 24.60
bin#22 26.95 1.222 12.20 25.78
bin#23 28.125 1.405 13.15 26.96
bin#24 29.30 1.596 14.10 28.14
bin#25 30.475 1.794 15.05 29.32
bin#26 31.65 2.001 16.00 30.50
bin#27 32.825 2.215 16.95 31.68
bin#28 34.00 2.437 17.90 32.86
bin#29 35.175 2.667 18.85 34.04
bin#30 36.35 2.905 19.80 35.22
bin#31 37.525 3.151 20.75 36.40

*Probe 109 values. Probe swapped after rf10. Probe 122 substituted.