Numerical simulation of a flapping micro aerial vehicle through wing deformation capture

Three-dimensional numerical simulations of a four-wing flapping micro aerial vehicle (FMAV) with actual experimentally captured wing membrane kinematics have been performed using an immersed boundary method Navier-Stokes finite volume solver. To successfully simulate the clap and fling motion involving the wing intersection, the numerical...

Numerical Simulation of a Flexible X-Wing Flapping-Wing Micro Air Vehicle

Aerodynamics of flapping-wing Micro-Air-Vehicle: An integrated experimental and numerical study

The interest in Micro Air Vehicles (MAVs) has stimulated continuous research activities, in view of their potential in civilian and military applications. An autonomous MAV with dedicated onboard sensors would be capable of executing mission in closed environments, such as surveillance, in door inspection in support of rescue operations and...

Numerical study on the flow characteristics of micro air vehicle wings at low Reynolds numbers

The aerodynamic characteristics around a micro air vehicle wing with an inverse-Zimmerman configuration are numerically investigated by an in-house programmed solver particularly dedicated for aircrafts operating in low Reynolds number regime. The complex three-dimensional aerodynamic performance was investigated in terms of force generation...

Numerical Investigation on the Propulsive Performance of Biplane Counter-flapping Wings

A numerical investigation is performed to address the flexing effect on the propulsion performance of flapping wing particularly on the counter-flapping wings of the biplane configuration. A Reynolds number of 10,000 is considered in the present study which corresponds to the flight regime of most existing flapping wing micro air vehicles. The...

A simplified model for assessing lateral railway bridge resonance behavior

Dynamics of railway bridges is a complicated problem that normally needs nu- merical simulation to conduct researches on. However, this thesis takes advan- tage of the numerical results provided in previous researches and based on these researches, further conclusions are made by using them in simplified model. Recently long span railway bridges...

Aerodynamic Characterization of ‘DelFly Micro’ in Forward Flight Configuration by Force Measurements and Flow Field Visualization

This study explores the flow structures and unsteady force generation mechanisms of a flapping-wing micro air vehicle ‘DelFly Micro’ in forward flight configuration. Stereoscopic Particle Image Velocimetry (Stereo-PIV) measurements were performed to acquire three dimensional flow fields in the wake. Six components of forces and moments were...

Numerical Investigation on the Propulsive Performance of Biplane Counter-flappingWings

A numerical investigation is performed to address the flexing effect on the propulsion performance of flapping wing particularly on the counter-flapping wings of the biplane configuration. A Reynolds number of 10,000 is considered<br/>in the present study which corresponds to the flight regime of most existing flapping wing micro air vehicles....

Vortex Formation and Force Generation Mechanisms of the DelFly II in Hovering Flight

This paper addresses the unsteady aerodynamic mechanisms in the hovering flight of the DelFly II flapping-wing Micro Aerial Vehicle (MAV). Stereoscopic Particle Image Velocimetry (Stereo-PIV) were carried out around the wings at a high framing rate. Thrust-force was measured to investigate the relation between the vortex dynamics and the...

Vortex Formation and Force Generation Mechanisms of the DelFly II in Hovering Flight

This paper addresses the unsteady aerodynamic mechanisms in the hovering flight of the DelFly II flapping-wing Micro Aerial Vehicle (MAV). Stereoscopic Particle Image Velocimetry (Stereo-PIV) were carried out around the wings at a high framing rate. Thrust-force was measured to investigate the relation between the vortex dynamics and the...

A Novel Emergent State Control Law for an Integrated Helicopter/Turboshaft Engine System

A two-layer robust control scheme is proposed to get a better response ability for emergency maneuvers of helicopter. Note that the power used in ascending flight is the main coupling between helicopter and its turboshaft engines; therefore vertical flight control is separated from conventional helicopter control loops and combined with fuel...

Experimental Investigation of the Flapping Performance on 'Delfly Micro'

Post dam era: New water defense system of Haringvliet

Multi-discipline design (Urbanism, Landscape architecture and Hydraulic engineering) - Project aim: opening the closed estuary, rebuild the natural environment and restart the natural sedimentation process - Design proposal: building a combined system in Haringvliet which provides open inlet and an inter-tidal zone, while at the same time keep...