Results 31 to 40 of about 971,693 (247)

Aerodynamics and aeroacoustics of flap side-edges [PDF]

open access: yes, 2008
An experimental and computational investigation was carried out to determine the aerodynamics and aeroacoustics of a flap side-edge. A porous side-edge treatment was applied to the flap side-edge in an attempt to reduce airframe noise. Measurements taken
Angland, David
core   +1 more source

Aerodynamic and aeroacoustic characteristics of a bionic morphing flap

open access: yesEnergy Reports, 2023
Birds adapt to the changing flight conditions by performing intricate feather-movements to manipulate the airflow. The avian wings often undergo seamless transformations at the trailing-edge to achieve camber-reflexes for extended flight envelope.
Md. Zishan Akhter   +2 more
doaj   +1 more source

Numerical study on technical and conceptual improvements to a civil aircraft trailing-edge flap using passive/active flow control

open access: yesEngineering Applications of Computational Fluid Mechanics, 2021
Future civil aircrafts require simple, low-noise, and highly efficient trailing-edge flaps. In this study, a detailed numerical study for flap improvements using steady and unsteady Reynolds-averaged Navier–Stokes computations was conducted.
Gang Wang, Binqian Zhang
doaj   +1 more source

Nonharmonic Control of the Blade-Vortex Interaction Noise of Electrically Controlled Rotor

open access: yesInternational Journal of Aerospace Engineering, 2022
Electrically controlled rotor, also known as swashplateless rotor, represents an active rotor system that, due to the use of a trailing edge flap system instead of a swashplate, not only enables primary control but also conveniently reduces the blade ...
Kewei Li   +3 more
doaj   +1 more source

Numerical analysis of stagger Supersonic biplane at off-design condition with trailing edge flap [PDF]

open access: yesFME Transactions, 2023
Supersonic biplanes can achieve low-boom and low-drag supersonic flights. In the present study, aerodynamic analysis of a two-dimensional stagger Bussmann biplane (staggered upper element by 0.5c) at zero degrees angle of attack with trailing edge flap ...
Patidar Vijay Kumar, Joshi Sudhir
doaj  

Influence of Gurney Flap and Leading-Edge/Trailing-Edge Flaps on the Stall Characteristics and Aeroacoustic Performance of Airfoils

open access: yesFluids
In aerospace, flow control techniques have improved the separation flow characteristics around airfoils by various means. In this paper, the delayed detached eddy simulation (DDES) technique is used to simulate the detailed flow field around the NACA0021
Zelin Liu, Kaidi Li, Xiaojing Sun
doaj   +1 more source

Effects of Trailing Edge Flaps on The Aerodynamics and Performance Characteristics of Rotor Blades

open access: yesHavacılık ve Uzay Teknolojileri Dergisi, 2022
In the present study, helicopter rotor blades with trailing edge flaps are studied to analyze their aerodynamic and performance characteristics for hover conditions. The effect of different characteristics of trailing edge flaps, i.e.
Hüseyin URAL, Özge ÖZDEMİR
doaj  

An Experimental and Simulation Study of the Active Camber Morphing Concept on Airfoils Using Bio-Inspired Structures

open access: yesBiomimetics, 2023
Birds are capable of morphing their wings across different flight modes and speeds to improve their aerodynamic performance. In light of this, the study aims to investigate a more optimized solution compared to conventional structural wing designs.
Alexsteven Dharmdas   +8 more
doaj   +1 more source

Active Control Method of Trailing-edge Flap for Suppressing High-frequency Vibration of Wind Turbine Blades

open access: yes工程科学与技术, 2021
An active control method of trailing edge flap is investigated for suppressing high frequency vibration of wind turbine blades. The structure is modeled as composite blade beam with circumferentially asymmetric stiffness (CAS) configuration, which is ...
Tingrui LIU   +4 more
doaj  

Development of an ANN-Based Predictive Model for an Airfoil with a Trailing-Edge Flap [PDF]

open access: yesE3S Web of Conferences
This work makes use of a data-driven approach to predict the aerodynamic performance of the wind turbine airfoil equipped with an active trailing-edge flap.
Afif Naoual   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy