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Validation of HART II Structural Dynamics Predictions Based on Prescribed Airloads
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 Title & Authors
Validation of HART II Structural Dynamics Predictions Based on Prescribed Airloads
Sa, Jeong-H.; You, Young-H.; Park, Jae-S.; Park, Soo-H.; Jung, Sung-N.;
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 Abstract
In this study, the accuracy of CSD (Comprehensive Structural Dynamics) analysis on the evaluation of blade aeroelastic responses and structural loads of HART(Higher harmonic Aeroacoustic Rotor Test) II baseline rotor is assessed using a comprehensive rotorcraft dynamics code, CAMRAD II, and a nonlinear flexible multi-body dynamics analysis code, DYMORE. Considering insufficient measurement data for HART II rotor, prescribed airloads computed by a three-dimensional compressible flow solver KFLOW are used to replace the lifting-line airloads and thereby enhance the prediction capability of the comprehensive analyses. The CSD results on blade elastic deflections using the prescribed airloads indicate more oscillatory behavior than those by lifting-line based approaches, but the wave pattern becomes improved by including artificial damping into the rotor system. It is demonstrated that the structural load predictions are improved significantly by the prescribed airloads approach against the measured data, as compared with an isolated CSD analysis.
 Keywords
HART II rotor;comprehensive code;prescribed airloads;artificial damping;
 Language
English
 Cited by
1.
BARAM: 전산유체 해석을 위한 가상풍동 시스템,김민아;이중연;구기범;허영주;이세훈;박수형;김규홍;조금원;

한국전산유체공학회지, 2015. vol.20. 4, pp.28-35 crossref(new window)
1.
BARAM: VIRTUAL WIND-TUNNEL SYSTEM FOR CFD SIMULATION, Journal of computational fluids engineering, 2015, 20, 4, 28  crossref(new windwow)
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