Issue |
Volume 9, 2017
Progress in Flight Physics
|
|
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Page(s) | 149 - 172 | |
Section | Aerodynamics | |
DOI | https://doi.org/10.1051/eucass/2016090149 | |
Published online | 20 June 2017 |
Wave drag reduction with a self-aligning aerodisk on a missile configuration
German Aerospace Center (DLR) 10 Bunsenstr., Göttingen 37073, Germany
A self-aligning aerodisk to reduce the wave drag on a pitching missile is numerically investigated. The motion and the Mach number were chosen to match a maneuver flight of an actual missile: pitching frequency f = 7.5 Hz, Mach number M = 2.2, and range of angle of attack 0֯ < α < 21֯ . The self-alignment was realized with a coupling of the §ow solver with a 6DoF (6 degrees of freedom) tool. In the entire range of angle of attack, the drag could be reduced with the self-aligning aerodisk. A comparison with experimental data showed in parts a quite good agreement in the aerodynamic coe©cients, in the shock structure, and in the alignment of the aerodisk.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.