Computational Study of the Free Flight of a Flapping Wing at Low Reynolds Numbers

2008 ◽  
Author(s):  
Dominic Chandar ◽  
M. Damodaran
Keyword(s):  
Computational Study ◽  
Reynolds Numbers ◽  
Flapping Wing ◽  
Free Flight ◽  
Low Reynolds Numbers ◽  
Low Reynolds

A Computational Study on Airfoils at a Low Reynolds Number

2000 ◽  
Author(s):  
Ajit Pal Singh ◽  
S. H. Winoto ◽  
D. A. Shah ◽  
K. G. Lim ◽  
Robert E. K. Goh
Keyword(s):  
Reynolds Number ◽  
Computational Analysis ◽  
Computational Study ◽  
Low Reynolds Number ◽  
Micro Air Vehicles ◽  
Reynolds Numbers ◽  
Aerodynamic Performance ◽  
Low Reynolds Numbers ◽  
Study Results ◽  
Low Reynolds

Abstract Performance characteristics of some low Reynolds number airfoils for the use in micro air vehicles (MAVs) are computationally studied using XFOIL at a Reynolds number of 80,000. XFOIL, which is based on linear-vorticity stream function panel method coupled with a viscous integral formulation, is used for the analysis. In the first part of the study, results obtained from the XFOIL have been compared with available experimental data at low Reynolds numbers. XFOIL is then used to study relative aerodynamic performance of nine different airfoils. The computational analysis has shown that the S1223 airfoil has a relatively better performance than other airfoils considered for the analysis.

The Part Played by Skin Friction in Aeronautics

1937 ◽  
Vol 41 (316) ◽  
pp. 322-323
Author(s):  
F. W. Lanchester
Keyword(s):  
Skin Friction ◽  
Wind Velocity ◽  
Reynolds Numbers ◽  
Free Flight ◽  
Low Reynolds Numbers ◽  
Low Reynolds

In Part V of my recent paper, when discussing and tabulating the conditions that obtain at low Reynolds numbers (more especially as concerns the dynamics of flight of the model depicted in Fig. 14), the data shown in Table IX and plotted in Fig. 15 need correction. It appears that in the tabulation an incorrect constant was taken. Furthermore, the distinction which exists at low Reynolds numbers between data secured in the wind channel, in which, generally speaking, wind velocity is constant, and the data relating to a glider in free flight in which W is constant, was not sufficiently explained.

Influence of Tip Shape on Structure of Wing-Tip Vortex at Low Reynolds Numbers

2009 ◽  
Author(s):  
Djavad Kamari ◽  
Mehran Tadjfar
Keyword(s):  
Computational Study ◽  
Three Dimensional ◽  
Reynolds Numbers ◽  
Tip Vortex ◽  
Low Reynolds Numbers ◽  
Naca0012 Airfoil ◽  
Wingtip Vortex ◽  
Wing Tip Vortex ◽  
Low Reynolds ◽  
Wing Tip

An important phenomenon in three-dimensional flow over a wing is the existence of wingtip vortex. It has significant effects on the aerodynamics of flying vehicles. In this computational study, we investigate the effects of geometry of the wingtip on the structure of the wing-tip vortices. Here, we consider a rectangular half-wing with NACA0012 airfoil as cross section. The aerodynamic coefficients and the flow-field variables are computed at low Reynolds numbers below 50,000. As the edge-shape parameter is increased the wing tip vortex is weakened. This influence is higher at higher values of Reynolds number. But, the increase of angle of attack does not change the shape or rate of this increase.

Preliminary Design of Flapping Wing Micro Aerial Vehicle at Low Reynolds Numbers

2016 ◽  
Author(s):  
Abduljaleel Altememe ◽  
Stanley Anderson ◽  
Oliver J. Myers ◽  
Asha J. Hall
Keyword(s):  
Reynolds Numbers ◽  
Flapping Wing ◽  
Preliminary Design ◽  
Biologically Inspired ◽  
Micro Aerial Vehicle ◽  
Low Reynolds Numbers ◽  
Gas Detectors ◽  
Aerial Vehicle ◽  
Low Reynolds ◽  
Critical Components

This research discusses preliminary design of a Flapping Wing Micro Aerial Vehicle (FWMAV). One approach is to develop a biologically-inspired flapping wing MAV that can maneuver into confined areas and possess hover capabilities. This platform can potentially be equipped with microphones, cameras, and gas detectors, but one major challenge is the low Reynolds number aerodynamics. The critical components for successful flight include size, weight, and energy efficiency. Preliminary efforts include mechanical designs for payload, biologically inspired chassis, wing and tail.

Sign in / Sign up

Export Citation Format

Share Document