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Updated: Jun 12, 2026
09:17
Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods
Published on: April 23, 2018
Tumbling dynamics of passive flexible wings
Daniel Tam1, John W M Bush, Michael Robitaille
1Department of Mathematics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. dan_tam@math.mit.edu
Physical Review Letters
|May 21, 2010
Summary
Flexibility significantly impacts the flight of tumbling winged seedpods. Beyond a critical length, wings bend due to inertial forces, altering flight speed and range through aeroelastic coupling.
Area of Science:
- * Fluid dynamics
- * Biomechanics
- * Aerodynamics
Background:
- * Autorotating winged seedpods exhibit complex flight dynamics.
- * The role of material flexibility in their aerial locomotion is not fully understood.
- * Previous studies often model these structures as rigid bodies.
Purpose of the Study:
- * To investigate the influence of flexibility on the flight of autorotating structures.
- * To develop a theoretical model explaining the observed flight behaviors.
- * To understand the coupling between aeroelasticity and flight dynamics.
Main Methods:
- * Experimental investigation using freely falling, tumbling rectangular paper strips.
- * Development of a theoretical model for wing buckling.
- * Creation of a reduced model for flexible wing flight dynamics.
Main Results:
- * A critical length was identified, above which the wing material bends.
- * Wing buckling is driven by inertial forces during tumbling.
- * A buckling criterion consistent with experimental observations was derived.
Conclusions:
- * Flexibility is a key factor in the flight of autorotating wings.
- * Aeroelastic coupling significantly affects falling speed and range.
- * The study provides a framework for understanding flexible wing aerodynamics.
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