Results 21 to 30 of about 879 (205)

Optimization and Design of a Flexible Droop Nose Leading Edge Morphing Wing Based on a Novel Black Widow Optimization (B.W.O.) Algorithm—Part II

open access: yesDesigns, 2022
This work presents an aerodynamic and structural optimization for a Droop Nose Leading Edge Morphing airfoil as a high lift device for the UAS-S45. The results were obtained using three optimization algorithms: coupled Particle Swarm Optimization-Pattern
Musavir Bashir   +5 more
doaj   +1 more source

Near Stall Unsteady Flow Responses to Morphing Flap Deflections

open access: yesFluids, 2021
The unsteady flow characteristics and responses of an NACA 0012 airfoil fitted with a bio-inspired morphing trailing edge flap (TEF) at near-stall angles of attack (AoA) undergoing downward deflections are investigated at a Reynolds number of 0.62 × 106 ...
Chawki Abdessemed   +2 more
doaj   +1 more source

Alleviation of Dynamic Stall Moments by Morphing Flap

open access: yesHangkong gongcheng jinzhan, 2021
Active deflection of trailing edge control surface can reduce the adverse effect of airfoil dynamic stall on aerodynamic characteristics.This study set out to investigate the performance of morphing flap on dynamic stall alleviation.
OUYANG Yan   +3 more
doaj   +1 more source

Feasibility and principle analyses of morphing airfoil used to control flight attitude [PDF]

open access: yes, 2012
Morphing airfoil technology can enable an aircraft to adapt its shape to enhance mission performance and replace the traditional flap, ailerons, elevator and rudders to optimize flight attitude control efficiency.
Sha, Du, Liu, Long, Ang, Hai-Song
core   +5 more sources

Robust Algorithm Software for NACA 4-Digit Airfoil Shape Optimization Using the Adjoint Method

open access: yesApplied Sciences, 2023
Optimizing the aerodynamic shape of an airfoil is a critical concern in the aviation industry. The introduction of flexible airfoils has allowed the shape of the airfoil to vary, depending on the flight conditions. Therefore, in this study, we propose an
Naser Tanabi   +3 more
doaj   +1 more source

Elastomer-based skins for morphing aircraft applications: Effect of biaxial strain rates and prestretch

open access: yesPolymer Testing, 2022
There is an emerging trend in the morphing aircraft research where two or more morphing degrees of freedom are used on a wing which leads to the concept of polymorphing.
Dilshad Ahmad   +2 more
doaj   +1 more source

Aerodynamic and Aeroacoustic Performance of Spanwise Morphed Airfoils [PDF]

open access: yesAIAA AVIATION 2020 FORUM, 2020
Experimental studies of a NACA 0012 airfoil fitted with six different spanwise morphed flap profiles were successfully carried out to characterize their aerodynamic and aeroacoustic performance. The airfoil was tested with six configurations with different spanwise flap camber with a maximum deflection angle of β = 10◦ on one side and a minimum ...
Kamliya Jawahar, Hasan   +2 more
openaire   +1 more source

A High-Lift Optimization Methodology for the Design of Leading and Trailing Edges on Morphing Wings

open access: yesApplied Sciences, 2021
Morphing offers an attractive alternative compared to conventional hinged, multi-element high lift devices. In the present work, morphed shapes of a NACA 64A010 airfoil are optimized for maximum lift characteristics.
Charalampos Themistokleous   +5 more
doaj   +1 more source

Morphing Skin: Foams

open access: yes, 2022
S.207-230A morphing skin was developed for adaptive wings with multifinger ribs architecture enabling conformal and differential airfoil camber morphing. The skin consists of aluminum profiles for spanwise stability and low temperature elastomer foam and
Nagel, C., Schorsch, O., Lühring, A.
core   +1 more source

Novel Approach of Airfoil Shape Representation Using Modified Finite Element Method for Morphing Trailing Edge

open access: yesMathematics, 2023
This study presents a novel approach to parameterize the geometry of a morphing trailing-edge flap that allows its aerodynamics to be optimized while capturing the expected structural behavior of the flap.
Martynas Lendraitis   +1 more
doaj   +1 more source

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