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11 th Annual OSU and Smoke Round Robin Presented By Mike O’Bryant (The Boeing Co) 7/11/2006 at C&D Zodiac
11th Annual OSU and Smoke Round Robin
Presented By
Mike O’Bryant(The Boeing Co)
7/11/2006 at C&D Zodiac
Smoke Density (Dm4)
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M K O E D N A F Y S P B I Q L T R W J U X H V G C
Some of the data we ask for:
• Where and when was the heat flux gauge calibrated?
• What is W/cm^2 range of the gauge?• What is the OSU brand?• What is the Gauge brand?
5596 PANEL
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I C Q P B O U A N W G K D L R H T F Y S E X M I G P C U T O D Q R N L B A Y W F H M K E S X
Peak
Avg +/- 2SD
2 Min Total
5596 PANEL
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I C Q P B O U A N W G K D L R H T F Y S E X M I G P C U T O D Q R N L B A Y W F H M K E S X
Peak
Avg +/- 2SD
2 Min Total
Gauges calibrated at Vatell
5524 PANEL
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I O P K C U N F G D R B L T S X Q M H W E A Y I O P C K N U F B G D L R Q T A H M E S X W Y
Peak2 Min Total
Avg +/- 2SD
5524 PANEL
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I O P K C U N F G D R B L T S X Q M H W E A Y I O P C K N U F B G D L R Q T A H M E S X W Y
Peak2 Min Total
Avg +/- 2SD
CSI/Atlas
PEAK TIME (Seconds)
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F G M A K I X S L D N P T E Y C R W O H B Q U
5596 Panel
PEAK TIME (Seconds)
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F G M A K I X S L D N P T E Y C R W O H B Q U
5596 Panel
Vatell Calibration
PEAK TIME (Seconds)
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F G M A K I X S L D N P T E Y C R W O H B Q U
5596 Panel
Vatell Calibration
Peak Time(Sec) y = -15.669x + 77.434R2 = 0.8865
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1015202530354045
2.5 3 3.5 4
W/CM^2
PEAK TIME (Seconds)
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F G M A K I X S L D N P T E Y C R W O H B Q U
5596 Panel
Vatell Calibration
Peak Time(Sec) y = -15.669x + 77.434R2 = 0.8865
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1015202530354045
2.5 3 3.5 4
W/CM^2
Vatell calibration estimated to be 9% cooler based on peak time
Kh (kW/mV/M^2)
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O G N A D T X M R B C S W Y Q H P L E F I K U
CSI/ATLAS
Ohio State
Made In House
Ohio State
Manufacturer
Kh, 2004 - 2006
GO
T
N
I
AV
X
U
D
MC K
YW
BR
S
P
Q
H E
L
F
-40
-30
-20
-10
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% D
evia
tion
From
Avg
+2SD-2SDAVG
Statistically significant factors based on 3 years of data.
Factor Change Notes
Kh +/- 17% Variation from one extreme to the other
Vatell Calibration - 8% 8% lower numbers with a Vatell calibration
Gauge Range + 11%11% higher numbers when using a gauge range higher than 0-5 W/cm^2
OSU Brand + 7% 7% higher when using a CSI/Atlas OSU
5524 PANEL
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I O P K C U N F G D R B L T S X Q M H W E A Y I O P C K N U F B G D L R Q T A H M E S X W Y
Peak2 Min Total
Avg +/- 2SD
5524 PANEL
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I P O C F N E R K S U W L D T M G B Q H X Y A I P O F C E N K T B R L M S G A D U Q H W X Y
Peak2 Min Total
Avg +/- 2SD
5524 PANEL
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I P O C F N E R K S U W L D T M G B Q H X Y A I P O F C E N K T B R L M S G A D U Q H W X Y
Peak2 Min Total
Avg +/- 2SD
Adjusted for significant factors
5524 PANEL
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I P O C F N E R K S U W L D T M G B Q H X Y A I P O F C E N K T B R L M S G A D U Q H W X Y
Peak2 Min Total
Avg +/- 2SD
Adjusted for significant factors
Same OSU,1 year period
Recommendations• Develop a new panel optimized to have a
good peak time to heat flux correlation• Use an IR imager to characterize heat loss
of OSUs• Visit other labs, especially the outliers to
gain understanding. Bring the IR imager• Develop a finite element analysis model of
the OSU to better understand significant variables
Recommendations (cont.)• Extend calibration equilibration time from 2
minutes to 3 minutes per step. Use average of 1L/Min steps before and after each increase
Recommendations (cont.)• Extend calibration equilibration time from 2
minutes to 3 minutes per step. Use average of 1L/Min steps before and after each increase
Recommendations (cont.)• Extend calibration equilibration time from 2
minutes to 3 minutes per step. Use average of 1L/Min steps before and after each increase
• Re-establish OSU QA task group. Especially need members willing to participate in mini round robins within the group, collect data on more operational parameters, and be willing to participate in exchange visits.
