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Abstract:
Analytical results of rotor blade-vortex interaction airloads are presented with two different wake models in the comprehensive analysis CAMRAD II, and these calculated results are compared with the experimental data obtained from the higher-harmonic-control aeroacoustic rotor test (HART-I) program. The HART rotor was a 40%, Mach-scaled model of the hingeless BO-105 main rotor. Two wake models used in the comprehensive analysis are the single-trailer and the multiple-trailer free-wake models. The multiple-trailer wake model shows good prediction of lift distributions, M2cn, as a function of azimuth for baseline, minimum noise, and minimum vibration cases, and shows significant improvement relative to the single-trailer model in prediction of the tip vortex wake geometry.
| Limitations: |
 APPROVED FOR PUBLIC RELEASE |
| Description: |
Journal article |
| Pages: |
9 |
| Report Date: |
Jan 2003 |
| Report Number: |
A543025 |
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