Results 41 to 50 of about 2,053,013 (165)

Designing Incidence-Angle-Targeted Anti-Cavitation Foil Profiles Using a Combination Optimization Strategy

open access: yesEnergies, 2018
In hydraulic machinery, the surface of the blade can get damaged by the cavitation of the leading-edge. In order to improve the cavitation performance, the anti-cavitation optimization design of blade leading-edge is conducted.
Di Zhu, Ruofu Xiao, Ran Tao, Fujun Wang
doaj   +1 more source

Reentry vehicle leading edge Patent [PDF]

open access: yes, 1962
Leading edge design for hypersonic reentry ...
Friedrich, E. W.
core   +1 more source

Numerical Investigations of Film Cooling and Particle Impact on the Blade Leading Edge

open access: yesEnergies, 2021
As a vital power propulsion device, gas turbines have been widely applied in aircraft. However, fly ash is easily ingested by turbine engines, causing blade abrasion or even film hole blockage.
Ke Tian   +5 more
doaj   +1 more source

Vortex-lift roll-control device [PDF]

open access: yes, 1979
A wing is described for aircraft of cropped, arrow-type planform with thin leading and side edges. The wing has a pivotable tip to alter the crop angle of the wing during flight.
Lamar, J. E.
core   +1 more source

Rod–Airfoil Interaction Noise Reduction Using Gradient Distributed Porous Leading Edges

open access: yesApplied Sciences, 2022
Rod–airfoil interaction noise is a major concern in several practical industrial and aeronautical applications. In this study, we constructed bio-inspired gradient distributed porous leading edges to reduce rod–airfoil interaction noise. Noise radiations
Yong Wang   +4 more
doaj   +1 more source

Analysis and Design of a Leading Edge with Morphing Capabilities for the Wing of a Regional Aircraft—Gapless Chord- and Camber-Increase for High-Lift Performance

open access: yesApplied Sciences, 2021
In order to contribute to achieving noise and emission reduction goals, Fraunhofer and Airbus deal with the development of a morphing leading edge (MLE) as a high lift device for aircraft.
Conchin Contell Asins   +6 more
doaj   +1 more source

Young Children of Immigrants: The Leading Edge of America's Future [PDF]

open access: yes, 2010
Highlights data on the population of children of immigrants up to age 8, distribution by state, parents' origins, school enrollment rates, English proficiency, and family characteristics, including parent's citizenship, education, and income ...
Ajay Chaudry   +2 more
core   +1 more source

Wing Tip Drag Reduction at Nominal Take-Off Mach Number: An Approach to Local Active Flow Control with a Highly Robust Actuator System

open access: yesAerospace, 2016
This paper discusses wind tunnel test results aimed at advancing active flow control technology to increase the aerodynamic efficiency of an aircraft during take-off.
Matthias Bauer   +3 more
doaj   +1 more source

Fluorescent visualization of a spreading surfactant

open access: yes, 2010
The spreading of surfactants on thin films is an industrially and medically important phenomenon, but the dynamics are highly nonlinear and visualization of the surfactant dynamics has been a long-standing experimental challenge.
Adele M Lichtenberger   +6 more
core   +1 more source

Flight investigation of insect contamination and its alleviation [PDF]

open access: yes, 1978
An investigation of leading edge contamination by insects was conducted with a JetStar airplane instrumented to detect transition on the outboard leading edge flap and equipped with a system to spray the leading edge in flight.
Fisher, D. F., Peterson, J. B., Jr.
core   +1 more source

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