Results 41 to 50 of about 11,119 (215)

Comparison of Unsteady Low- and Mid-Fidelity Propeller Aerodynamic Methods for Whirl Flutter Applications

open access: yesApplied Sciences
Aircraft configurations with propellers have been drawing more attention in recent times, partly due to new propulsion concepts based on hydrogen fuel cells and electric motors.
Christopher Koch   +4 more
doaj   +1 more source

Limit cycle oscillation prediction based on Finite Element-Modal approach [PDF]

open access: yesArchive of Mechanical Engineering, 2018
The central theme of this work was to analyze high aspect ratio structure having structural nonlinearity in low subsonic flow and to model nonlinear stiffness by finite element-modal approach.
Kamran Ahmad, Shigang Wu, Hammad Rahman
doaj   +1 more source

Non‐Linear Reduced Order Modelling of Transonic Potential Flows for Fast Aerodynamic Analysis

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 127, Issue 2, 30 January 2026.
ABSTRACT This work presents a physics‐based reduced order modelling (ROM) framework for the efficient simulation of steady transonic potential flows around aerodynamic configurations. The approach leverages proper orthogonal decomposition and a least‐squares Petrov‐Galerkin (LSPG) projection to construct intrusive ROMs for the full potential equation ...
M. Zuñiga   +3 more
wiley   +1 more source

Active Fluid Gurney Flaps, Controllable Lift Enhancement Toward Wind Turbine Power Production Regulation

open access: yesWind Energy, Volume 29, Issue 1, January 2026.
ABSTRACT Meeting the rising demand for renewable energy requires innovative solutions to enhance wind power extraction, particularly given demographic and geographic constraints on wind farm deployment. Active high‐lift devices, such as the Active Fluid Gurney Flap (AFGF), offer a promising approach that can dynamically modify aerodynamic performance ...
Mario Lucas, Jorge Saavedra
wiley   +1 more source

MATHEMATICAL MODELING IN NON-LINEAR AEROELASTICITY PROBLEMS

open access: yesНаучный вестник МГТУ ГА, 2016
The modern aircraft aeroelasticity problems solving are considered. Mathematical models of aeroelasticity joined by non-linear vortex methods of numerical aerodynamics are described for different objects.
V. I. Morozov, V. V. Ovchinnikov
doaj  

Review of Research on Reinforced Concrete Shell Structure Produced Using an Inflated Form

open access: yesAdvances in Civil Engineering, Volume 2026, Issue 1, 2026.
Reinforced concrete shell structures produced using an inflated form are widely used in large‐span thin‐shell spatial structures. Unlike the construction technology of traditional concrete building structures, this method involves prefabricating the membrane material into a designed shape as the construction framework.
Xi Mao   +7 more
wiley   +1 more source

Continuation Methods for Nonlinear Flutter

open access: yesAerospace, 2016
Continuation methods are presented that are capable of treating frequency domain flutter equations, including multiple nonlinearities represented by describing functions.
Edward E. Meyer
doaj   +1 more source

A Reinforcement Learning–Controlled Novel Mode‐Switching Hybrid Mass Damper on a Real Tower

open access: yesStructural Control and Health Monitoring, Volume 2026, Issue 1, 2026.
This work proposes a novel passive, semiactive and active mode‐switching hybrid mass damper (MSHMD) solution for the control of an actual high‐rise tower. For the mode‐switching control of the considered building system, a reinforcement learning algorithm, Deep Q‐Network (DQN), was implemented.
Lefteris Koutsoloukas   +3 more
wiley   +1 more source

Simulated pilot-in-the-loop testing of handling qualities of the flexible wing aircraft

open access: yesAviation, 2020
This article aims to indicate the differences between rigid and flexible wing aircraft flying (FQ) and handling (HQ) qualities. The Simulation Framework for Flexible Aircraft was used to provide a generic cockpit environment and a piloted mathematical ...
Vilius Portapas, Alastair Cooke
doaj   +1 more source

Experimental Seismic Response Assessment of Tall Buildings With Large Mass Damping

open access: yesEarthquake Engineering &Structural Dynamics, Volume 54, Issue 15, Page 3707-3725, December 2025.
ABSTRACT This paper describes an experimental investigation into the seismic performance of a novel integrated damping system. The proposed damping concept mobilises a portion of the building's own mass to generate damping from its differential motion relative to the lateral load‐resisting system.
Miguel Martinez‐Paneda   +3 more
wiley   +1 more source

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