Investigation of Transonic Drag Computations in Aerodynamic ...
Investigation of Transonic Drag Computations in Aerodynamic ...
Investigation of Transonic Drag Computations in Aerodynamic ...
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<strong>Investigation</strong> <strong>of</strong> <strong>Transonic</strong> <strong>Drag</strong> <strong>Computations</strong> <strong>in</strong> APAS<br />
172.5 ft.<br />
R 8.625 ft.<br />
59.6 ft.<br />
Figure 24: APAS Geometry for Argus RLV<br />
The results <strong>of</strong> UDP and “wave drag” analysis on the Argus configuration are<br />
shown <strong>in</strong> Figure 25. The results are nearly identical to those from the Starsaber analysis.<br />
The drag <strong>in</strong>crease above Mach 1.1 is more pronounced here, but drag seems to decrease<br />
aga<strong>in</strong> above Mach 1.5. Theoretical reference w<strong>in</strong>g area for Argus is 2588.8 ft 2 .<br />
Argus Basel<strong>in</strong>e (12-31-97)<br />
0.06<br />
0.05<br />
Total <strong>Drag</strong><br />
Total <strong>Drag</strong> - Wave <strong>Drag</strong><br />
0.04<br />
C d0<br />
0.03<br />
0.02<br />
0.01<br />
0<br />
0 0.5 1 1.5 2 2.5<br />
Mach #<br />
Figure 25. Argus APAS Results, With & Without Wave <strong>Drag</strong><br />
Jeff Miller 22
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