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Proceedings Paper

Digital holography wavefront sensing with a supersonic wind tunnel
Author(s): Christopher C. Wilcox; Cameron J. Radosevich; Keith P. Healy; Andrea L. Tuffli; Brian D. Agena; Mark F. Spencer; Donald J. Wittich III
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Paper Abstract

The Air Force Research Laboratory (AFRL) Directed Energy Directorate is completing a supersonic wind tunnel to characterize aero-optics effects in high speed flow fields. Optical characterization is accomplished by transmitting a beam of light transverse to the direction of air flow via access windows, thereby illuminating the flow region, a select volume of which is recorded by a suite of sensors. Quantitative measurements of the flow are made using two wave-front sensors (WFS), a Shack-Hartmann (SH) WFS and a digital holography (DH) WFS. Qualitative measurements are made using a traditional Schlieren imaging system. Parenthetically, in addition to characterization of aero-optics effects, we expect to be able to numerically propagate to different planes in the supersonic flow field to characterize boundary layer effects. This paper reviews our wind tunnel system’s requirements and, in particular, the design of the DH WFS.

Paper Details

Date Published: 23 April 2019
PDF: 10 pages
Proc. SPIE 11030, Holography: Advances and Modern Trends VI, 110300L (23 April 2019); doi: 10.1117/12.2521337
Show Author Affiliations
Christopher C. Wilcox, Air Force Research Lab. (United States)
Cameron J. Radosevich, Air Force Research Lab. (United States)
Keith P. Healy, Liedos (United States)
Andrea L. Tuffli, Applied Technology Associates (United States)
Brian D. Agena, Liedos (United States)
Mark F. Spencer, Air Force Research Lab. (United States)
Donald J. Wittich III, Air Force Research Lab. (United States)

Published in SPIE Proceedings Vol. 11030:
Holography: Advances and Modern Trends VI
Antonio Fimia; Miroslav Hrabovský; John T. Sheridan, Editor(s)

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