Ground and Flight Testing of a Boeing 737 Center Wing Fuel Tank ...
Ground and Flight Testing of a Boeing 737 Center Wing Fuel Tank ...
Ground and Flight Testing of a Boeing 737 Center Wing Fuel Tank ...
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Oxygen Concentration (% Vol)<br />
25<br />
20<br />
15<br />
10<br />
5<br />
0<br />
8% Line<br />
0 2 4 6 8 10 12<br />
Time (minutes)<br />
Empty CWT 90 CFM, 95% NEA<br />
Average <strong>Center</strong> Bay<br />
Average Left Cheek<br />
Average Right Cheek<br />
FIGURE 9. GROUND TEST 2—ULLAGE WASHING AVERAGE OXYGEN<br />
CONCENTRATION DATA<br />
Inerting Ratio<br />
1<br />
0.9<br />
0.8<br />
0.7<br />
0.6<br />
0.5<br />
0.4<br />
0.3<br />
0.2<br />
0.1<br />
0<br />
Inerting Target = 0.81<br />
0 0.5 1 1.5 2 2.5<br />
Volumetric <strong>Tank</strong> Exchange<br />
Empty CWT 90 CFM, 95% NEA<br />
Measured Data<br />
Exact Solution<br />
Empirical Equation<br />
FIGURE 10. GROUND TEST 2—NONDIMENSTIONAL ULLAGE-WASHING DATA<br />
15<br />
14
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