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- W161085674 abstract "A numerical procedure which has been developed (Hassan and Charles, 1989) for the prediction of helicopter blade loads during self-generated blade-vortex interactions (BVI) is described. These BVIs result in significant and frequent impulsive changes in the rotor blade aerodynamic loads and moments that are known to lead to vibrations and severe noise problems. Potential BVIs are identified and tracked in time at even increments of rotor azimuth employing the lifting line helicopter/rotor trim code CAMRAD. The accuracy of the predicted leading edge pressures for self-generated interactions is shown to rely heavily on the user-specified vortex core radius, and more significantly on the CAMRAD-predicted geometry of the interaction vortex elements and their relative orientation with respect to the blade. Thus, the robustness of the surface transpiration approach for modeling subcritical-type BVIs is proven." @default.
- W161085674 created "2016-06-24" @default.
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- W161085674 date "1990-01-01" @default.
- W161085674 modified "2023-09-27" @default.
- W161085674 title "Numerical simulations of three-dimensional rotor blade-vortex interactions" @default.
- W161085674 hasPublicationYear "1990" @default.
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