Unsteady aerodynamic forces and torques on falling parallelograms in coupled tumbling-helical motions

Wake-Induced Oscillatory Paths of Bodies Freely Rising or Falling in Fluids

(2011) Patricia Ern et al.   Annual Review of Fluid Mechanics

The kinematics of falling maple seeds and the initial transition to a helical motion

(2011) Kapil Varshney et al.   NONLINEARITY

Vortical structures on a flapping wing

(2010) C. A. Ozen et al.   EXPERIMENTS IN FLUIDS

Fruit Flies Modulate Passive Wing Pitching to Generate In-Flight Turns

(2010) Attila J. Bergou et al.   PHYSICAL REVIEW LETTERS

Smoke visualization of free-flying bumblebees indicates independent leading-edge vortices on each wing pair

(2009) Richard James Bomphrey et al.   EXPERIMENTS IN FLUIDS

Revisiting the aerodynamics of hovering flight using simple models

(2009) CHENG-TA HSIEH et al.   JOURNAL OF FLUID MECHANICS

Leading-Edge Vortices Elevate Lift of Autorotating Plant Seeds

(2009) D. Lentink et al.   SCIENCE

Numerical analysis of two-dimensional motion of a freely falling circular cylinder in an infinite fluid

(2008) KAK NAMKOONG et al.   JOURNAL OF FLUID MECHANICS