The application of biomimetics in the development of unmanned-aerial-vehicles (UAV) has
advanced to an exceptionally small scale of nano-aerial-vehicles (NAV), which has …

Collective motion of organisms is a widespread phenomenon exhibited by many species,
most commonly associated with colonial birds and schools of fish. The benefits of schooling …

Experiments are reported on the behavior of two hydrofoils arranged in an in-line
configuration as they undergo prescribed pitching motions over a wide range of phase lags …

Numerical studies are presented on the propulsive performance and vortex dynamics of
multiple hydrofoils pitching in an in-line configuration. The study is motivated by the quest to …

The propulsive performance of a pair of tandem flapping foils is sensitively dependent on the
spacing and phasing between them. Large increases in thrust and efficiency of the hind foil …

This paper reports a fundamental investigation on the aerodynamics of two-dimensional
flapping wings in tandem configuration in forward flight. Of particular interest are the effects …

Classic models of fish schools and flying formations of birds are built on the hypothesis that
the preferred locations of an individual are determined by the flow left by its upstream …

Oscillating foils in synchronized pitch/heave motions can be used to harvest hydrokinetic
energy. By understanding the wake structure and its correlation with the foil kinematics …

Symmetric flapping foils are known to produce deflected jets at high frequency–amplitude
combinations even at a zero mean angle of attack. This reduces the frequency range of …

We present experiments that examine the modes of interaction, the collective performance
and the role of three-dimensionality in two pitching propulsors in an in-line arrangement …