Results 11 to 20 of about 207,403 (310)

Fast Prediction of Multiple Parameters Related to Iced Airfoil Based on POD and Kriging Methods [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
Ice accretion threatens aircraft safety. With the wide application of unmanned aerial vehicles (UAVs), the design of ice-tolerant UAVs has become a problem that must be solved.
J. Niu   +5 more
doaj   +1 more source

Sectional Leading Edge Vortex Lift and Drag Coefficients of Autorotating Samaras

open access: yesAerospace, 2023
Autorotating samaras such as Sycamore seeds are capable of descending at exceptionally slow speeds and the secret behind this characteristic is attributed to a flow mechanism known as the leading edge vortex (LEV).
Byung Kwon Jung, Djamel Rezgui
doaj   +1 more source

Numerical Simulation on Aerodynamics of Multi-Element Airfoil with Drooped Spoiler in Ground Effect

open access: yesXibei Gongye Daxue Xuebao, 2019
By using the finite volume method and k-ω SST turbulence model to solve the Reynolds Average Navier-Stokes equation and using the slipping wall to simulate the relative movement of the ground, the ground effect on the aerodynamic characteristic of multi ...

doaj   +1 more source

Wind Tunnel Experiments on an Aircraft Model Fabricated Using a 3D Printing Technique

open access: yesJournal of Manufacturing and Materials Processing, 2022
Experimental tests regarding the M-346 aircraft model made via 3D printing were carried out in order to obtain numerical data and characteristics in the form of graphs of basic aerodynamic forces and coefficients.
Katarzyna Szwedziak   +6 more
doaj   +1 more source

Investigation of the aerodynamic characteristics of a lifting body in ground proximity [PDF]

open access: yes, 2016
The use of cambered hull shapes in the next generation of lighter-than-air vehicles to enhance aerodynamic performance, together with optimized take-off manoeuvre profiles, will require a more detailed understanding of ground proximity effects for such
Garry, Kevin P.   +2 more
core   +1 more source

Weierstrass coefficients of the canonical lifting [PDF]

open access: yesInternational Journal of Number Theory, 2019
Given an ordinary elliptic curve [Formula: see text] over a field of characteristic [Formula: see text], there are functions [Formula: see text] and [Formula: see text] such that the curve [Formula: see text] where [Formula: see text] and [Formula: see text] is the canonical lifting of [Formula: see text].
openaire   +2 more sources

Inertial coefficient rings and the idempotent lifting property [PDF]

open access: yesProceedings of the American Mathematical Society, 1976
A commutative ring R R with identity is called an inertial coefficient ring if every finitely generated R R -algebra A A with A / N A/N separable over R R contains a separable R R -subalgebra S S
openaire   +2 more sources

CFD Analysis of NACA 0012 Aerofoil to Investigate the Effect of Increasing Angle of Attack on Coefficient of Lift and Coefficient of Drag

open access: yesJournal of Studies in Science and Engineering, 2022
The significance of using proper blade design is increasing with advancements in aviation technology. Wings are used in a variety of applications, including aircraft, drones, wind turbines, and more.
Mirza Haseeb Khalid
doaj   +1 more source

Numerical studies influence configuration fairing flap track airfoil type naca 4412 and naca 6412 character unmanned aerial vehicle (UAV)

open access: yesMATEC Web of Conferences, 2018
Wings have a function of changing the air flowing into force lift, and drag. It can reduce the drag is fairing flap track, where its function can reduce the obstacles caused by the effects of compressibility, fairing flap track also has a major influence
Pratama Handrico Ramelan   +1 more
doaj   +1 more source

Numerical Study of Geometrical Properties of Full-Span Tubercle Leading Edge Wing at Post-Stall Condition [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2023
In order to upsurge the maneuverability of micro aerial vehicles, a tubercle leading edge inspired by the whale flipper was applied as a passive stall control method.
A. Nikkhoo, A. Esmaeili
doaj   +1 more source

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