Analysis of Dynamic Mode Decomposition Outputs of Unsteady Pressure-Sensitive Paint Measurements in the NASA Wind Tunnel Tests

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Analysis of Dynamic Mode Decomposition Outputs of Unsteady Pressure-Sensitive Paint Measurements in the NASA Wind Tunnel Tests

J. Li / N. H. Roozeboom / E. L. Lash / M. A. Shaw-Lecerf / J. K. Baerny / T. J. Garbeff / L. A. Hand / C. E. Henze / D. D. Murakami / N. T. Smith

Abstract

This paper discusses the Dynamic Mode Decomposition (DMD) outputs of the Unsteady Pressure-Sensitive Paint (uPSP) measurements, which were collected with four Phantom high-speed cameras at a constant sample frequency in the Ascent Transient Aerodynamics Test (ATAT) of the Space Launch System (SLS) Block 1 cargo vehicle in the 11-by-11-foot transonic test section of the Unitary Plan Wind Tunnel (UPWT) at NASA Ames Research Center in September 2019. In this paper, the effectiveness to use the DMD outputs of uPSP measurements in the diagnosis and analysis of the aerodynamic and acoustic phenomena in the SLS ATAT is demonstrated. The work described in the paper is a part of NASA’s development of a new state-of-the-art uPSP capability in production wind tunnels. Funding was provided by the NASA Aerosciences Evaluation and Test Capabilities (AETC) Project.

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Document information

Title :

Analysis of Dynamic Mode Decomposition Outputs of Unsteady Pressure-Sensitive Paint Measurements in the NASA Wind Tunnel Tests

Contributors:

J. Li (author) / N. H. Roozeboom (author) / E. L. Lash (author) / M. A. Shaw-Lecerf (author) / J. K. Baerny (author) / T. J. Garbeff (author) / L. A. Hand (author) / C. E. Henze (author) / D. D. Murakami (author) / N. T. Smith (author)

Publication date :

2023

Size :

5 pages

Type of media :

Report

Type of material :

No indication

Language :

English

Keywords :

Acoustics , Aerodynamics , Power spectral density , Signal processing , Unsteady pressure-sensitive paint , Wind tunnel test