Applications of the unsteady vortex-lattice method in aircraft aeroelasticity and flight dynamics

J Murua, R Palacios, JMR Graham - Progress in Aerospace Sciences, 2012 - Elsevier
The unsteady vortex-lattice method provides a medium-fidelity tool for the prediction of non-
stationary aerodynamic loads in low-speed, but high-Reynolds-number, attached flow …

A fluid–structure interaction model of insect flight with flexible wings

T Nakata, H Liu - Journal of Computational Physics, 2012 - Elsevier
We present a fluid–structure interactions (FSI) model of insect flapping flight with flexible
wings. This FSI-based model is established by loosely coupling a finite element method …

Analytical sensitivity analysis of an unsteady vortex-lattice method for flapping-wing optimization

BK Stanford, PS Beran - Journal of Aircraft, 2010 - arc.aiaa.org
This work considers the design optimization of a flapping wing in forward flight with active
shape morphing, aimed at maximizing propulsive efficiency under lift and thrust constraints …

Unsteady aerodynamic modeling of aerobat using lifting line theory and wagner's function

E Sihite, P Ghanem, A Salagame… - 2022 IEEE/RSJ …, 2022 - ieeexplore.ieee.org
Flying animals possess highly complex physical characteristics and are capable of
performing agile maneuvers using their wings. The flapping wings generate complex wake …

Computational aeroelasticity framework for analyzing flapping wing micro air vehicles

SK Chimakurthi, J Tang, R Palacios, CES Cesnik… - AIAA journal, 2009 - arc.aiaa.org
MICRO Air Vehicles (MAVs) are advancing our capabilities in the areas of environmental
monitoring and homeland security [1]. Because of their small size and flight regime, the …

Time-resolved wake structure and kinematics of bat flight

TY Hubel, NI Hristov, SM Swartz, KS Breuer - Experiments in fluids, 2009 - Springer
We present synchronized time-resolved measurements of the wing kinematics and wake
velocities for a medium sized bat, Cynopterus brachyotis, flying at low-medium speed in a …

Semi-active flapping foil for marine propulsion

N Thaweewat, S Phoemsapthawee, V Juntasaro - Ocean Engineering, 2018 - Elsevier
The present study deals with numerical investigation of a semi-active flapping foil of which
the kinematics is characterized by an imposed heave motion and a free pitch motion. A …

Propulsion characteristics of self-pitching flapping foil

L Mei, W Yan, J Zhou, B Guo, L Cong, W Shi - Ocean Engineering, 2023 - Elsevier
As a promising form of oscillating hydrofoil propulsion, self-pitching flapping foil (SPFF) has
been widely used in ocean engineering applications such as ships, underwater vehicles …

Quasi three-dimensional deformable blade element and unsteady vortex lattice reduced-order modeling of fluid–structure interaction in flapping wings

R Schwab, J Reade, M Jankauski - Physics of Fluids, 2022 - pubs.aip.org
Flapping, flexible insect wings deform under inertial and fluid loading. Deformation
influences aerodynamic force generation and sensorimotor control, and is thus important to …

Membrane flutter in three-dimensional inviscid flow

C Mavroyiakoumou, S Alben - Journal of Fluid Mechanics, 2022 - cambridge.org
We develop a model and numerical method to study the large-amplitude flutter of
rectangular membranes (of zero bending rigidity) that shed a trailing vortex-sheet wake in a …