Unsteady Aerodynamic Models for Agile Flight at Low Reynolds Number

2010 ◽  
Author(s):  
Steven Brunton ◽  
Clarence Rowley
Keyword(s):  
Reynolds Number ◽  
Low Reynolds Number ◽  
Unsteady Aerodynamic ◽  
Low Reynolds ◽  
Agile Flight

scholarly journals FLAPPING WING DEVICES FOR MARS EXPLORATION

2011 ◽  
Author(s):  
Asier Ania ◽  
Dominique Poirel ◽  
Marie-Josée Potvin ◽  
Steeve Montminy
Keyword(s):  
Reynolds Number ◽  
Insect Flight ◽  
Low Reynolds Number ◽  
Flapping Wing ◽  
Low Density ◽  
Mars Exploration ◽  
Unsteady Aerodynamic ◽  
Aerial Vehicle ◽  
Low Reynolds

The use of an aerial vehicle would greatly enhance the domain of exploration on Mars. The main constraint in such a design would be the extreme Martian environment. The low-density atmosphere suggests the use of a low Reynolds number flight regime modeled after flapping wing insect flight. This flapping wing flight employs several unsteady aerodynamic mechanisms; delayed stall, wake capture, and rotational mechanisms. Two prototypes, a flapping wing and a rotary-flapping wing hybrid, have been built and will be tested in order to quantify the 'overall lift' generated and allow us to evaluate the efficacy of flapping wing flight on Mars.

Unsteady aerodynamic characteristics of a translating rigid wing at low Reynolds number

2015 ◽  
Vol 27 (12) ◽  
pp. 123102 ◽  
Author(s):  
Peter Mancini ◽  
Field Manar ◽  
Kenneth Granlund ◽  
Michael V. Ol ◽  
Anya R. Jones
Keyword(s):  
Reynolds Number ◽  
Low Reynolds Number ◽  
Aerodynamic Characteristics ◽  
Unsteady Aerodynamic ◽  
Low Reynolds ◽  
Rigid Wing

The Effects of Flexible Deformation on an Oscillating Airfoil at Low Reynolds Number

2011 ◽  
Vol 117-119 ◽  
pp. 610-614
Author(s):  
Jiang Hao Wu ◽  
Chao Zhou ◽  
Yan Lai Zhang
Keyword(s):  
Reynolds Number ◽  
Phase Difference ◽  
Low Reynolds Number ◽  
Aerodynamic Performance ◽  
Aerodynamic Forces ◽  
Unsteady Aerodynamic ◽  
Deformation Parameters ◽  
Low Reynolds ◽  
Time Courses ◽  
Flexible Deformation

The objective of investigation is to use numerical simulation obtain the effect of three different flexible deformation parameters (the maximum deforming amplitude, the phase difference between the plunging motion and the deformation motion and location of the maximum deforming) on unsteady aerodynamic performance of an airfoil with plunging and pitching motion. It is shown the effect of flexible deformation at low Reynolds number is obvious. The effect of the maximum deforming amplitude and the phase difference on aerodynamic forces is quite significant while the time courses of CL and CT don’t almost change with location of the maximum deforming. Different deforming amplitude and the phase difference may be advantageous or disadvantageous for averaged aerodynamic forces. Larger phase difference can produce more thrust and make the forward flight faster. Compared with the rigid airfoil, the appreciate combination of deformation parameters is beneficial in MAV design.

Vortex control strategy for unsteady aerodynamic optimization of a plunging airfoil at a low Reynolds number

2021 ◽  
Vol 33 (11) ◽  
pp. 117110
Author(s):  
Lei Wang ◽  
Li-Hao Feng ◽  
Yan Liang ◽  
Yi-Long Chen ◽  
Zhen-Yao Li
Keyword(s):  
Reynolds Number ◽  
Control Strategy ◽  
Low Reynolds Number ◽  
Aerodynamic Optimization ◽  
Vortex Control ◽  
Unsteady Aerodynamic ◽  
Low Reynolds
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