TY - GEN
T1 - Efficient calculation of hingeless rotor blade flap-lag-torsion dynamics for helicopters
AU - Adair, Desmond
AU - Jaeger, Martin
N1 - Publisher Copyright:
© 2019, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2019
Y1 - 2019
N2 - A fast and efficient method of calculation, using the Adomian modified decomposition method is developed for the dynamic analysis of rotating hingeless helicopter blades. The coupled equations of motion include shear, rotary inertia and axial tension due to centrifugal stiffening and these are uncoupled to give three ordinary differential equations, which are solved to provide modal frequency and modal shapes for the flap, lag and torsional displacements. Moment and shear curves of a typical rotor blade are also calculated. The method gives accurate results with fast convergence noted and can easily be extended when non-linear terms are present.
AB - A fast and efficient method of calculation, using the Adomian modified decomposition method is developed for the dynamic analysis of rotating hingeless helicopter blades. The coupled equations of motion include shear, rotary inertia and axial tension due to centrifugal stiffening and these are uncoupled to give three ordinary differential equations, which are solved to provide modal frequency and modal shapes for the flap, lag and torsional displacements. Moment and shear curves of a typical rotor blade are also calculated. The method gives accurate results with fast convergence noted and can easily be extended when non-linear terms are present.
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U2 - 10.2514/6.2019-1029
DO - 10.2514/6.2019-1029
M3 - Conference contribution
SN - 9781624105784
T3 - AIAA Scitech 2019 Forum
BT - AIAA Scitech 2019 Forum
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA Scitech Forum, 2019
Y2 - 7 January 2019 through 11 January 2019
ER -