Aerodynamic Characteristics Of Membrane Airfoil Compared To Rigid Naca 4412 Airfoil

Membrane airfoil is said to have the flexibility to change its surface geometry to adapt to the airflow. This means that it has the potential to balance the pressure gradient, resulting with a delayed stall and also the capability to expand its camber to increase the overall lift. The paper aims to...

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Main Author: Chan, Min Xhao
Format: Monograph
Language:English
Published: Universiti Sains Malaysia 2018
Subjects:
Online Access:http://eprints.usm.my/52514/1/Aerodynamic%20Characteristics%20Of%20Membrane%20Airfoil%20Compared%20To%20Rigid%20Naca%204412%20Airfoil_Chan%20Min%20Xhao__A2_2018.pdf
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author Chan, Min Xhao
author_facet Chan, Min Xhao
author_sort Chan, Min Xhao
collection USM
description Membrane airfoil is said to have the flexibility to change its surface geometry to adapt to the airflow. This means that it has the potential to balance the pressure gradient, resulting with a delayed stall and also the capability to expand its camber to increase the overall lift. The paper aims to study the aerodynamic performance of a ribbed-structure airfoil (NACA 4412) wrapped in a thin sheet of latex rubber membrane and compare it with the original rigid airfoil. The results from this experiment showed that the lift-to-drag ratio of the membrane airfoil improved when compared to its rigid counterpart with investigations carried out at low Reynolds number from around Re = 30,000 ∼100,000. Due to the characteristics of the membrane being frail, high flow velocity will not be suitable. Aerodynamic forces are measured using external force balance at subsonic wind tunnel. Also, this study will attempt to measure the membrane deflections of the airfoil using the concept of elastic modulus.
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spelling usm.eprints-525142022-06-09T05:45:33Z http://eprints.usm.my/52514/ Aerodynamic Characteristics Of Membrane Airfoil Compared To Rigid Naca 4412 Airfoil Chan, Min Xhao T Technology TL1-4050 Motor vehicles. Aeronautics. Astronautics Membrane airfoil is said to have the flexibility to change its surface geometry to adapt to the airflow. This means that it has the potential to balance the pressure gradient, resulting with a delayed stall and also the capability to expand its camber to increase the overall lift. The paper aims to study the aerodynamic performance of a ribbed-structure airfoil (NACA 4412) wrapped in a thin sheet of latex rubber membrane and compare it with the original rigid airfoil. The results from this experiment showed that the lift-to-drag ratio of the membrane airfoil improved when compared to its rigid counterpart with investigations carried out at low Reynolds number from around Re = 30,000 ∼100,000. Due to the characteristics of the membrane being frail, high flow velocity will not be suitable. Aerodynamic forces are measured using external force balance at subsonic wind tunnel. Also, this study will attempt to measure the membrane deflections of the airfoil using the concept of elastic modulus. Universiti Sains Malaysia 2018-06-01 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/52514/1/Aerodynamic%20Characteristics%20Of%20Membrane%20Airfoil%20Compared%20To%20Rigid%20Naca%204412%20Airfoil_Chan%20Min%20Xhao__A2_2018.pdf Chan, Min Xhao (2018) Aerodynamic Characteristics Of Membrane Airfoil Compared To Rigid Naca 4412 Airfoil. Project Report. Universiti Sains Malaysia, Pusat Pengajian Kejuruteraan Aeroangkasa.
spellingShingle T Technology
TL1-4050 Motor vehicles. Aeronautics. Astronautics
Chan, Min Xhao
Aerodynamic Characteristics Of Membrane Airfoil Compared To Rigid Naca 4412 Airfoil
title Aerodynamic Characteristics Of Membrane Airfoil Compared To Rigid Naca 4412 Airfoil
title_full Aerodynamic Characteristics Of Membrane Airfoil Compared To Rigid Naca 4412 Airfoil
title_fullStr Aerodynamic Characteristics Of Membrane Airfoil Compared To Rigid Naca 4412 Airfoil
title_full_unstemmed Aerodynamic Characteristics Of Membrane Airfoil Compared To Rigid Naca 4412 Airfoil
title_short Aerodynamic Characteristics Of Membrane Airfoil Compared To Rigid Naca 4412 Airfoil
title_sort aerodynamic characteristics of membrane airfoil compared to rigid naca 4412 airfoil
topic T Technology
TL1-4050 Motor vehicles. Aeronautics. Astronautics
url http://eprints.usm.my/52514/1/Aerodynamic%20Characteristics%20Of%20Membrane%20Airfoil%20Compared%20To%20Rigid%20Naca%204412%20Airfoil_Chan%20Min%20Xhao__A2_2018.pdf
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