Results 31 to 40 of about 11,934 (259)
Lift observation conveys object weight distribution but partly enhances predictive lift planning [PDF]
Journal of Neurophysiology, 2020 Abstract Observation of object lifting allows updating of internal object representations for object weight, in turn enabling accurate scaling of fingertip forces when lifting the same object. Here, we investigated whether lift observation also enables updating of internal representations for an object’s weight distribution.
Guy Rens +3 more
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Review of the Co-flow Jet Flow Control Method
Hangkong gongcheng jinzhan, 2022 The co-flow jet(CFJ)is a new concept flow control method based on blowing and suction technology.Since it was proposed,it has gradually attracted extensive attention.This paper reviews the basic principles,concepts,research methods and progress of CFJ ...
XU Heyong, MA Chengyu
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Aerodynamic Exploration for Tandem Wings with Smooth or Corrugated Surfaces at Low Reynolds Number
Aerospace, 2023 Skin corrugation and tandem configuration are two distinct features that characterize the flow around dragonfly wings. In contrast to the smooth airfoil and single pair of wings of conventional airplanes, corrugated surfaces and tandem wings influence ...
Qing Zhang, Rongrong Xue, Heng Li
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Indian Journal of Ophthalmology, 2023 Purpose: To compare visual outcomes of early enhancement following small incision lenticule extraction (SMILE) versus laser in situ keratomileusis (LASIK). Methods: Retrospective analysis of eyes (patients operated in the setting of a tertiary eye care
B Soundarya +4 more
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Lift-enhancing tabs on multielement airfoils [PDF]
Journal of Aircraft, 1995 The use of flat-plate tabs (similar to Gurney flaps) to enhance the lift of multielement airfoils is extended here by placing them on the pressure side and near the trailing edge of the main element rather than just on the furthest downstream wing element. The tabs studied range in height from 0.125 to 1.25% of the airfoil reference chord. In practice,
James C. Ross +2 more
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Closed-loop Flow Control Method Based on Deep Reinforcement Learning using a Co-flow Jet [PDF]
Journal of Applied Fluid MechanicsA closed-loop control framework is developed for the co-flow jet (CFJ) airfoil by combining the numerical flow field environment of a CFJ0012 airfoil with a deep reinforcement learning (DRL) module called tensorforce integrated in Python.
Y. R. Zhao, H. Y. Xu, Z. Y. Xie
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Applied Sciences, 2021 Rotor airfoil design involves multi-point and multi-objective complex constraints. How to significantly improve the maximum lift coefficient and lift-to-drag ratio of rotor airfoil is a fundamental problem, which should be solved urgently in the ...
Shunlei Zhang +4 more
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Wing flexibility enhances load-lifting capacity in bumblebees [PDF]
Proceedings of the Royal Society B: Biological Sciences, 2013 The effect of wing flexibility on aerodynamic force production has emerged as a central question in insect flight research. However, physical and computational models have yielded conflicting results regarding whether wing deformations enhance or diminish flight forces. By experimentally stiffening the wings of live bumblebees, we demonstrate that wing
Andrew M, Mountcastle, Stacey A, Combes
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Numerical Study of the Lift Enhancement Mechanism of Circulation Control in Transonic Flow
Aerospace, 2021 The lift of an aircraft can be effectively enhanced by circulation control (CC) technology at subsonic speeds, but the efficiency at transonic speeds is greatly decreased. The underlying mechanism of this phenomenon is not fully understood. In this study,
Ye Chen +5 more
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Design of High-Efficiency Jet Lift Enhancement for Flaps Under Propeller Slipstream Influence
AerospaceBoth propeller slipstream and flap jet flow can significantly increase the aircraft lift coefficient. To establish design principles for efficient lift enhancement via jet flow under the influence of slipstream, wind tunnel experiments are conducted on a
Yan Shao +5 more
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