Fast-Responding Pressure-Sensitive Paint Measurements of the IC3X at Mach 7.2
Global surface pressure measurements of a 5.7% scale AFRL Initial Concept 3.X vehicle (IC3X) were obtained using a fast-responding ruthenium-based pressure-sensitive paint (PSP) at the UTSA Mach 7 Ludwieg Tube Wind Tunnel at two different angles of attack, 0° and 2.5°. Static calibration of the pain...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Aerospace |
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| Online Access: | https://www.mdpi.com/2226-4310/10/10/890 |
| _version_ | 1797575072178765824 |
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| author | Valeria Delgado Elizondo Abinayaa Dhanagopal Christopher S. Combs |
| author_facet | Valeria Delgado Elizondo Abinayaa Dhanagopal Christopher S. Combs |
| author_sort | Valeria Delgado Elizondo |
| collection | DOAJ |
| description | Global surface pressure measurements of a 5.7% scale AFRL Initial Concept 3.X vehicle (IC3X) were obtained using a fast-responding ruthenium-based pressure-sensitive paint (PSP) at the UTSA Mach 7 Ludwieg Tube Wind Tunnel at two different angles of attack, 0° and 2.5°. Static calibration of the paint was performed over a range of 0.386 kPa to 82.7 kPa to relate luminescent intensity to pressure. Details on the facility, paint preparation, application, calibration, and image processing techniques are provided in the manuscript. The results from statistical, spectral, and proper orthogonal decomposition (POD) analyses are presented to characterize the pressure field observed on the model. The experimental results qualitatively follow the expected trends and correspond to the occurrence of shock waves and expansion fans, which were visualized via Schlieren imaging. The theoretical pressure range obtained from conical shock analysis for 0° agrees with the experimentally derived pressure range for the model, and the outliers are attributed to errors in image registration. This study presents preliminary pressure measurements that pave the way for obtaining time-resolved global PSP measurements to train and validate aerothermodynamic machine learning models. |
| first_indexed | 2024-03-10T21:31:07Z |
| format | Article |
| id | doaj.art-3d1cdbac0c9546c3bd07d516ab849fe6 |
| institution | Directory Open Access Journal |
| issn | 2226-4310 |
| language | English |
| last_indexed | 2024-03-10T21:31:07Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Aerospace |
| spelling | doaj.art-3d1cdbac0c9546c3bd07d516ab849fe62023-11-19T15:17:33ZengMDPI AGAerospace2226-43102023-10-01101089010.3390/aerospace10100890Fast-Responding Pressure-Sensitive Paint Measurements of the IC3X at Mach 7.2Valeria Delgado Elizondo0Abinayaa Dhanagopal1Christopher S. Combs2Department of Mechanical Engineering, Margie and Bill Klesse College of Engineering and Integrated Design, The University of Texas at San Antonio, San Antonio, TX 78249, USADepartment of Mechanical Engineering, Margie and Bill Klesse College of Engineering and Integrated Design, The University of Texas at San Antonio, San Antonio, TX 78249, USADepartment of Mechanical Engineering, Margie and Bill Klesse College of Engineering and Integrated Design, The University of Texas at San Antonio, San Antonio, TX 78249, USAGlobal surface pressure measurements of a 5.7% scale AFRL Initial Concept 3.X vehicle (IC3X) were obtained using a fast-responding ruthenium-based pressure-sensitive paint (PSP) at the UTSA Mach 7 Ludwieg Tube Wind Tunnel at two different angles of attack, 0° and 2.5°. Static calibration of the paint was performed over a range of 0.386 kPa to 82.7 kPa to relate luminescent intensity to pressure. Details on the facility, paint preparation, application, calibration, and image processing techniques are provided in the manuscript. The results from statistical, spectral, and proper orthogonal decomposition (POD) analyses are presented to characterize the pressure field observed on the model. The experimental results qualitatively follow the expected trends and correspond to the occurrence of shock waves and expansion fans, which were visualized via Schlieren imaging. The theoretical pressure range obtained from conical shock analysis for 0° agrees with the experimentally derived pressure range for the model, and the outliers are attributed to errors in image registration. This study presents preliminary pressure measurements that pave the way for obtaining time-resolved global PSP measurements to train and validate aerothermodynamic machine learning models.https://www.mdpi.com/2226-4310/10/10/890pressure-sensitive paintLudwieg tubewind tunnelhypersonics |
| spellingShingle | Valeria Delgado Elizondo Abinayaa Dhanagopal Christopher S. Combs Fast-Responding Pressure-Sensitive Paint Measurements of the IC3X at Mach 7.2 Aerospace pressure-sensitive paint Ludwieg tube wind tunnel hypersonics |
| title | Fast-Responding Pressure-Sensitive Paint Measurements of the IC3X at Mach 7.2 |
| title_full | Fast-Responding Pressure-Sensitive Paint Measurements of the IC3X at Mach 7.2 |
| title_fullStr | Fast-Responding Pressure-Sensitive Paint Measurements of the IC3X at Mach 7.2 |
| title_full_unstemmed | Fast-Responding Pressure-Sensitive Paint Measurements of the IC3X at Mach 7.2 |
| title_short | Fast-Responding Pressure-Sensitive Paint Measurements of the IC3X at Mach 7.2 |
| title_sort | fast responding pressure sensitive paint measurements of the ic3x at mach 7 2 |
| topic | pressure-sensitive paint Ludwieg tube wind tunnel hypersonics |
| url | https://www.mdpi.com/2226-4310/10/10/890 |
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