Results 1 to 10 of about 7,951,401 (343)

Lift enhancement by bats' dynamically changing wingspan. [PDF]

open access: yesJ R Soc Interface, 2015
This paper elucidates the aerodynamic role of the dynamically changing wingspan in bat flight. Based on direct numerical simulations of the flow over a slow-flying bat, it is found that the dynamically changing wingspan can significantly enhance the lift.
Wang S, Zhang X, He G, Liu T.
europepmc   +5 more sources

Experimental Investigation of Lift Enhancement and Drag Reduction of Discrete Co-Flow Jet Rotor Airfoil

open access: yesApplied 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
doaj   +2 more sources

Numerical Study of the Lift Enhancement Mechanism of Circulation Control in Transonic Flow

open access: yesAerospace, 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
doaj   +2 more sources

Control of Flow around an Oscillating Plate for Lift Enhancement by Plasma Actuators

open access: yesApplied Sciences, 2019
During insect flight, a feathering motion of the wing’s controls vortex shedding for lift enhancement. In this study, in order to control the flow around a wing flapping with simplified sinusoidal motion, plasma actuators were introduced to ...
Saya Sato   +2 more
doaj   +2 more sources

Integrating Orthognathic Surgery Into Lip Lift for Subnasal Aesthetics [PDF]

open access: yesPlastic and Reconstructive Surgery, Global Open
Summary:. Lip lift is a versatile procedure to shorten the upper lip and improve the morphology and proportion of the lip. It is commonly performed as part of facial rejuvenation in Western patients, whereas in Asian countries, younger people tend to ...
Yoshitsugu Hattori, MD   +4 more
doaj   +2 more sources

SMAS Advancement with Fat Enhancement (SAFE) Lift

open access: yesPlastic and Reconstructive Surgery, Global Open, 2021
Rod J. Rohrich, MD   +2 more
doaj   +3 more sources

Enhancing aerodynamic performance using biomimetic wavy trailing edges on aircraft wing at low Reynolds number [PDF]

open access: yesScientific Reports
This study investigates the aerodynamic effects of biomimetic wavy trailing edges inspired by natural designs, focusing on their application to a swept-back NACA 0012 airfoil under free-flight conditions.
Mohamed A. Aziz   +3 more
doaj   +2 more sources

The Lift Enhancement Effect of a New Fluidic Oscillator on High-Lift Wings

open access: yesAerospace
Fluidic oscillators have emerged as a prominent topic of research in the field of flow control, owing to their broad sweep range and enhanced control efficiency.
Tong Zhao, Yalei Bai
doaj   +2 more sources

Dynamic lift enhancement mechanism of dragonfly wing model by vortex-corrugation interaction [PDF]

open access: yesPhysical Review Fluids, 2023
The wing structure of several insects, including dragonflies, is not smooth, but corrugated; its vertical cross-section consists of a connected series of line segments.
Y. Fujita, M. Iima
semanticscholar   +1 more source

Fluid-structure interaction of a bio-inspired passively deployable flap for lift enhancement [PDF]

open access: yesPhysical Review Fluids, 2022
Birds have a remarkable ability to perform complex maneuvers at post-stall angles of attack such as landing, take-off, hovering and perching. The passive deployment of self-actuating covert feathers in response to unsteady flow separation while ...
Nirmal J. Nair, Andres Goza
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy