Results 41 to 50 of about 13,317 (179)
Wind Energy, Volume 28, Issue 12, December 2025.ABSTRACT Conventional steel towers face challenges such as insufficient stiffness and structural instability, making them increasingly unsuitable for supporting large multi‐megawatt wind turbines. This study investigates the dynamic performance of concrete‐filled double‐skin steel tubular (CFDST) wind turbine towers as a novel structural member ...
Xiaogang Jia +3 more
wiley +1 more source
Transonic unsteady airloads on an energy efficient transport wing with oscillating control surfaces [PDF]
An aspect ratio 10.8 supercritical wing with oscillating control surfaces is described. The wing is instrumental with 252 static orifices and 164 in situ dynamic pressure transducers for studying the effects of control surface deflection on steady and ...
Cazier, F. W., Jr. +3 more
core +1 more source
Dynamic Stall Characteristics of Thick Wind Turbine Airfoils
Wind Energy, Volume 28, Issue 11, November 2025.ABSTRACT This paper studies the dynamic stall characteristics of thick flatback and nonflatback wind turbine airfoils. Two airfoils with a maximum thickness of 35%$$ 35\% $$ were studied, with trailing edge thicknesses of 2%$$ 2\% $$ and 10%$$ 10\% $$, respectively.
Mehdi Doosttalab +4 more
wiley +1 more source
Analytical flutter investigation of a composite propfan model [PDF]
A theoretical model and an associated computer program for predicting subsonic bending-torsion flutter in propfans are presented. The model is based on two-dimensional unsteady cascade strip theory and three-dimensional steady and unsteady lifting ...
Kaza, K. R. V. +3 more
core +1 more source
Water Resources Research, Volume 61, Issue 11, November 2025.Abstract Sediment entrainment marks the initiation of particle motion on the bed surface and plays a crucial role in quantifying sediment transport. While the entrainment behavior might vary among different geophysical flows, the underlying mechanisms are often similar.
Xueqiang Lu +8 more
wiley +1 more source
Научный вестник МГТУ ГА, 2017 The paper presents numerical results analysis of main rotor vibration due to helicopter main rotor thrust pulsation.The calculation method, the object of research and numerical research results with the aim to reduce the amplitude of the vibrations ...
B. S. Kritsky +2 more
doaj
Unified aeroacoustics analysis for high speed turboprop aerodynamics and noise. Volume 3: Application of theory for blade loading, wakes, noise, and wing shielding [PDF]
Results of the program for the generation of a computer prediction code for noise of advanced single rotation, turboprops (prop-fans) such as the SR3 model are presented.
Hanson, D. B. +3 more
core +1 more source
An analysis for the sound field produced by rigid wide cord dual rotation propellers of high solidarity in compressible flow [PDF]
An unsteady lifting service theory for the counter-rotating propeller is presented using the linearized governing equations for the acceleration potential and representing the blades by a surface distribution of pulsating acoustic dipoles distributed ...
Bober, L. J., Ramachandra, S. M.
core +1 more source
A Digital Program for Calculating the Interaction Between Flexible Structures, Unsteady Aerodynamics and Active Controls [PDF]
A computer program, ISAC, is described which calculates the stability and response of a flexible airplane equipped with active controls. The equations of motion relative to a fixed inertial coordinate system are formulated in terms of the airplane's ...
Adams, W. M., Jr., Peele, E. L.
core +1 more source
Three-dimensional effects on pure tone fan noise due to inflow distortion [PDF]
Two dimensional, quasi three dimensional and three dimensional theories for the prediction of pure tone fan noise due to the interaction of inflow distortion with a subsonic annular blade row were studied with the aid of an unsteady three dimensional ...
Kobayashi, H.
core +1 more source