scholarly journals Aerodynamic Model for Tandem Flapping Wings

AIAA Journal ◽  
2016 ◽  
Vol 54 (12) ◽  
pp. 3849-3858
Author(s):  
A. H. M. Faisal ◽  
A. Filippone
Keyword(s):  
Flapping Wings ◽  
Aerodynamic Model ◽  
Tandem Flapping Wings

Ground effect on tandem flapping wings hovering

2017 ◽  
Vol 152 ◽  
pp. 40-56 ◽  
Author(s):  
N.G. Srinidhi ◽  
S. Vengadesan
Keyword(s):  
Ground Effect ◽  
Flapping Wings ◽  
Tandem Flapping Wings

scholarly journals Stable hovering of a jellyfish-like flying machine

2014 ◽  
Vol 11 (92) ◽  
pp. 20130992 ◽  
Author(s):  
Leif Ristroph ◽  
Stephen Childress
Keyword(s):  
High Speed ◽  
Motion Tracking ◽  
The Body ◽  
Flapping Wings ◽  
Wing Size ◽  
Centre Of Mass ◽  
Hovering Flight ◽  
High Speed Video ◽  
Aerodynamic Model ◽  
Aerodynamic Surfaces

Ornithopters, or flapping-wing aircraft, offer an alternative to helicopters in achieving manoeuvrability at small scales, although stabilizing such aerial vehicles remains a key challenge. Here, we present a hovering machine that achieves self-righting flight using flapping wings alone, without relying on additional aerodynamic surfaces and without feedback control. We design, construct and test-fly a prototype that opens and closes four wings, resembling the motions of swimming jellyfish more so than any insect or bird. Measurements of lift show the benefits of wing flexing and the importance of selecting a wing size appropriate to the motor. Furthermore, we use high-speed video and motion tracking to show that the body orientation is stable during ascending, forward and hovering flight modes. Our experimental measurements are used to inform an aerodynamic model of stability that reveals the importance of centre-of-mass location and the coupling of body translation and rotation. These results show the promise of flapping-flight strategies beyond those that directly mimic the wing motions of flying animals.

scholarly journals Collective Flow Enhancement by Tandem Flapping Wings

2015 ◽  
Vol 115 (18) ◽  
Author(s):  
Nick Gravish ◽  
Jacob M. Peters ◽  
Stacey A. Combes ◽  
Robert J. Wood
Keyword(s):  
Flapping Wings ◽  
Collective Flow ◽  
Flow Enhancement ◽  
Tandem Flapping Wings

Unsteady aerodynamic model of flapping wings

AIAA Journal ◽  
1996 ◽  
Vol 34 (7) ◽  
pp. 1435-1440 ◽  
Author(s):  
Michael S. Vest ◽  
Joseph Katz
Keyword(s):  
Flapping Wings ◽  
Unsteady Aerodynamic ◽  
Aerodynamic Model
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