Results 1 to 10 of about 24,649 (162)

An alternative approach to induced drag reduction

open access: yesAviation, 2021
Induced drag constitutes approximately 40% of the total drag of subsonic civil transport aircraft at cruise conditions. Various types of winglets and several non-planar concepts, such as the C-wing, the joined wings, and the box plane, have been proposed
Nikolaos Kehayas
doaj   +3 more sources

Wake-Model Effects on Induced Drag Prediction of Staggered Boxwings

open access: yesAerospace, 2018
For staggered boxwings the predictions of induced drag that rely on common potential-flow methods can be of limited accuracy. For example, linear, freestream-fixed wake models cannot resolve effects related to wake deflection and roll-up, which can have ...
Julian Schirra   +2 more
doaj   +3 more sources

Assessment of Scale Effects, Viscous Forces and Induced Drag on a Point-Absorbing Wave Energy Converter by CFD Simulations

open access: yesJournal of Marine Science and Engineering, 2018
This paper analyses the nonlinear forces on a moored point-absorbing wave energy converter (WEC) in resonance at prototype scale (1:1) and at model scale (1:16).
Johannes Palm   +3 more
doaj   +3 more sources

Numerical and Experimental Study of a Wing Combined with Wing Grids in Low Reynolds Number Flows [PDF]

open access: yesمهندسی مکانیک شریف, 2022
One of the reasons for the increase in induced drag is the vortices created at the wing tip, which has a significant effect on reducing aerodynamic efficiency.
M. sadeghi Malekabadi, A. Banazadeh
doaj   +1 more source

Substructures induced by dust drag in protoplanetary disks

open access: yesAstronomy & Astrophysics
Dust substructures observed in protoplanetary disks are commonly attributed to embedded planets; however, intrinsic gas-dust interactions can also generate complex morphologies.
Bi Jiaqing   +4 more
doaj   +3 more sources

A novel approach to calculating induced drag from computational fluid dynamics

open access: yesAIP Advances, 2021
Early aerodynamic mathematical methods rely on potential flow concepts that formally isolate aerodynamic drag into a profile and an induced drag component.
George Loubimov, Michael Kinzel
doaj   +1 more source

Evaluation of wing structures at the conceptual stage of transport category aircraft projects

open access: yesAviation, 2022
The purpose of this research is to improve the approach for evaluating of new design solutions based on sensitivity analysis of takeoff mass (SFM) to initial changes in the basic project.
Anatolii Kretov, Dmytro Tiniakov
doaj   +1 more source

Aerodynamic Modeling of a Flying Wing Featuring Ludwig Prandtl’s Bell Spanload

open access: yesAerospace, 2023
This paper presents the aerodynamic modeling of a flying wing featuring Ludwig Prandtl’s bell spanload. The aerodynamic models are developed using a medium fidelity vortex-lattice method and using a Reynolds-Averaged Navier–Stokes computational fluid ...
Caleb Robb, Ryan Paul
doaj   +1 more source

Comparison of Induced and Parasitic Drag on Wings with Minimum Induced Drag

open access: yesAIAA Scitech 2019 Forum, 2019
Minimizing the induced drag for steady level flight is a variational problem that requires solving for the optimum lift distribution given a set of design constraints. From lifting-line theory, minimizing the induced drag is, in part, achieved by varying the Fourier coefficients used to describe the section lift.
Sarah A. Abdel-Motaleb   +3 more
openaire   +4 more sources

Developments in Wingtip Vorticity Mitigation Techniques: A Comprehensive Review

open access: yesAerospace, 2023
Wingtip vortices generated from aircraft wingtips, as a result of the pressure differential at the wingtip, constitute a major component of the total drag force, especially during take-off and landing.
Yousef Gharbia   +3 more
doaj   +1 more source

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