Measurement of Rotorcraft Blade Deformation Using Projection Moiré Interferometry
Projection Moiré Interferometry (PMI) has been used to obtain near instantaneous, quantitative blade deformation measurements of a generic rotorcraft model at several test conditions. These laser-based measurements provide quantitative, whole field, dynamic blade deformation profiles conditionally s...
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2000-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2000/342875 |
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| _version_ | 1849305924907302912 |
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| author | Gary A. Fleming Susan Althoff Gorton |
| author_facet | Gary A. Fleming Susan Althoff Gorton |
| author_sort | Gary A. Fleming |
| collection | DOAJ |
| description | Projection Moiré Interferometry (PMI) has been used to obtain near instantaneous, quantitative blade deformation measurements of a generic rotorcraft model at several test conditions. These laser-based measurements provide quantitative, whole field, dynamic blade deformation profiles conditionally sampled as a function of rotor azimuth. The instantaneous nature of the measurements permits computation of the mean and unsteady blade deformation, blade bending, and twist. The PMI method is presented, and the image processing steps required to obtain quantitative deformation profiles from PMI interferograms are described. Experimental results are provided which show blade bending, twist, and unsteady motion. This initial proof-of-concept test has demonstrated the capability of PMI to acquire accurate, full field rotorcraft blade deformation data. |
| format | Article |
| id | doaj-art-2ce0e331f6a44911a28fe19dc3bb77ae |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2000-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-2ce0e331f6a44911a28fe19dc3bb77ae2025-08-20T03:55:16ZengWileyShock and Vibration1070-96221875-92032000-01-017314916510.1155/2000/342875Measurement of Rotorcraft Blade Deformation Using Projection Moiré InterferometryGary A. Fleming0Susan Althoff Gorton1National Aeronautics and Space Administration, Langley Research Center, Hampton, VA 23681-2199, USANational Aeronautics and Space Administration, Langley Research Center, Hampton, VA 23681-2199, USAProjection Moiré Interferometry (PMI) has been used to obtain near instantaneous, quantitative blade deformation measurements of a generic rotorcraft model at several test conditions. These laser-based measurements provide quantitative, whole field, dynamic blade deformation profiles conditionally sampled as a function of rotor azimuth. The instantaneous nature of the measurements permits computation of the mean and unsteady blade deformation, blade bending, and twist. The PMI method is presented, and the image processing steps required to obtain quantitative deformation profiles from PMI interferograms are described. Experimental results are provided which show blade bending, twist, and unsteady motion. This initial proof-of-concept test has demonstrated the capability of PMI to acquire accurate, full field rotorcraft blade deformation data.http://dx.doi.org/10.1155/2000/342875 |
| spellingShingle | Gary A. Fleming Susan Althoff Gorton Measurement of Rotorcraft Blade Deformation Using Projection Moiré Interferometry Shock and Vibration |
| title | Measurement of Rotorcraft Blade Deformation Using Projection Moiré Interferometry |
| title_full | Measurement of Rotorcraft Blade Deformation Using Projection Moiré Interferometry |
| title_fullStr | Measurement of Rotorcraft Blade Deformation Using Projection Moiré Interferometry |
| title_full_unstemmed | Measurement of Rotorcraft Blade Deformation Using Projection Moiré Interferometry |
| title_short | Measurement of Rotorcraft Blade Deformation Using Projection Moiré Interferometry |
| title_sort | measurement of rotorcraft blade deformation using projection moire interferometry |
| url | http://dx.doi.org/10.1155/2000/342875 |
| work_keys_str_mv | AT garyafleming measurementofrotorcraftbladedeformationusingprojectionmoireinterferometry AT susanalthoffgorton measurementofrotorcraftbladedeformationusingprojectionmoireinterferometry |