Results 201 to 210 of about 14,731 (266)

Effects of wind turbine wakes on bird gliding aerodynamic performance. [PDF]

Sci Rep
Yang X, Zhou L, Sui Y, Ren Z, Chen S.
europepmc   +1 more source

Numerical Analysis of the Aerodynamic Interactions in Tandem Flying Snake Airfoils. [PDF]

Biomimetics (Basel)
Gong Y, Guo J, He A, Sun Y, Dong H.
europepmc   +1 more source

Butterfly Clap-Fling Flight Mechanisms Observed by Schlieren Imaging for the Design of Bio-Inspired Micro Air Vehicles. [PDF]

Biomimetics (Basel)
Prisăcariu EG, Strătilă S, Dumitrescu O, Sima M, Roșu RA, Vlăducă I.   +5 more
europepmc   +1 more source

Navigating in clutter: how bumblebees optimize flight behaviour through experience. [PDF]

J Exp Biol
Jeschke M, Stahlsmeier M, Egelhaaf M, Bertrand OJN.   +3 more
europepmc   +1 more source

Insect applications to open wounds by chimpanzees in the wild: first insights from East African chimpanzees. [PDF]

Sci Rep
Kolff K, Acosta Flórez D, Mascaro A, Pika S.   +3 more
europepmc   +1 more source

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Formation Flying Satellites: Control By an Astrodynamicist

Celestial Mechanics and Dynamical Astronomy, 2001
Potential periodic formation orbits can be identified using Hill's equation. However, as gravitational perturbations destroy the periodicity, a control is required to maintain the desired orbits. Here, the authors address the control of individual satellites as well as the control of the whole constellation.
Alfriend, Kyle T., Vadali, Srinivas R., Schaub, Hanspeter   +2 more
openaire   +1 more source

Technology validation of the autonomous formation flying sensor for precision formation flying

2003 IEEE Aerospace Conference Proceedings (Cat. No.03TH8652), 2004
A Radio Frequency (RF) based sensor, called the Autonomous Formation Flying (AFF) sensor, has been developed to enable deep space precision formation flying by measuring the relative range and bearing angles between multiple spacecraft. The AFF sensor operates at Ka-band and uses signal-processing schemes inherited from the Global Positioning System ...
J.Y. Tien, G.H. Purcell, L.R. Amaro, L.E. Young, null Mimi Aung, J.M. Srinivasan, E.D. Archer, A.M. Vozoff, null Yong Chong   +8 more
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Formation-flying interferometry

SPIE Proceedings, 2003
There are many advantages to space-based interferometry, but monolithic, single-spacecraft platforms set limits on the collecting area and baseline length. These constraints can be overcome by distributing the optical elements of the interferometer over a system of multiple spacecraft flying in precise formation, opening up new realms of angular ...
Oliver P. Lay, Gary H. Blackwood
openaire   +1 more source