Lecture # 08: Boundary Layer Flows and Controls
|
|
- Milton Gray
- 5 years ago
- Views:
Transcription
1 AerE 344 Lecture Notes Lecture # 8: Boundary Layer Flows and Controls Dr. Hui Hu Department of Aerospace Engineering Iowa State University Ames, Iowa 511, U.S.A
2 Flow Separation on an Airfoil
3 Quantification of Boundary Layer Flow at y, u. 99U Displacement thickness: y Momentum thickness:
4 Boundary Layer Theory Y w X U y wall Re C f X p y U X X Re Re Blasius solution for laminar boundary layer: X X X X 1.72X * Re.664X Re
5 Boundary Layer Theory Y X p y Turbulent boundary layer: w U y wall Re C f X U X.74 (Re ) X X.37X (Re ) 1/5 1/5
6 Boundary Layer Flows Y X w U y wall Which one will induce more drag? Laminar boundary layer? Turbulent boundary layer?
7 Flow Around A Sphere with laminar and Turbulence Boundary Layer
8 Boundary Layer Flows w U y wall Which one will induce more drag? Laminar boundary layer? Turbulent boundary layer?
9 CONVENTIONAL AIRFOILS and LAMINAR FLOW AIRFOILS Laminar flow airfoils are usually thinner than the conventional airfoil. The leading edge is more pointed and its upper and lower surfaces are nearly symmetrical. The major and most important difference between the two types of airfoil is this, the thickest part of a laminar wing occurs at 5% chord while in the conventional design the thickest part is at 25% chord. Drag is considerably reduced since the laminar airfoil takes less energy to slide through the air. Extensive laminar flow is usually only experienced over a very small range of angles-of-attack, on the order of 4 to 6 degrees. Once you break out of that optimal angle range, the drag increases by as much as 4% depending on the airfoil
10 Flow Control: Shark Skin
11 Vortex structure over rough surfaces with Riblet
12 Flow Control: Shark Skin
13 Shark Skin Swimming Suits
14 Micro Air Vehicles (MAVs) Micro Air Vehicles (MAVs) are commonly defined as an air vehicle with wingspan less than 15 cm (~ 6 in.) and capable of operating at speeds of about 1 m/s (~ 2 mph). There is a wide range of applications to motivate development of MAVs. Militaristic Applications Surveillance Chemical/Radiation Detection Communication Links Rescue and Life Detection Visual Inspections Toys Fixed-Wing MAV design Rotary-Wing MAV design Flapping-Wing MAV design
15 Introduction Re c 5, Re c 5,, Re c 1,, Re c 1, Re c < 5, MAVs
16 Micro-Air-Vehicles (MAVs) The airfoil and planform designs for most of the existing MAVs rely on scaled-down of those used by convectional, macro-scale aircraft. macro-scale aircraft: Re C = 1 6 ~ interest for MAV applications Streamlined airfoil MAVs: Re C = 1 4 ~ Scale-down of conventional airfoils could not provide sufficient aerodynamic performance for MAV applications. C C L D MAX 1 1 rough surface airfoil It is very necessary and important to establish novel airfoil shape and wing planform design paradigms for MAVs in order to achieve superb aerodynamic performances to improve their flight agility and versatility. Re (from McMaster and Henderson, 198) U C 7 1
17 Insects: Biological Micro-Air-Vehicles Dragonfly Cicada Bee Damselfly Chrysomya megacephala (fly) Locust
18 Close views of dragonfly wings Vein network Profiles taken from Kesel, A. B., Journal of Experimental Biology, Vol. 23, 2, pp Membranes Corrugated wing cross section!
19 Bio-Inspired Corrugated Wings A simple flat plate The flat plate has a rectangular cross section without any rounded treatment at the leading edge and trailing edge. a. Flat plate A bio-inspired corrugated airfoil The shape of the bio-inspired corrugated airfoil corresponds to the forewing of a dragonfly acquired at the mid section of the wing, which was digitally extracted from the profiles given in Kesel (Journal of experimental Biology, Vol. 23, pp3125~pp3135, 2). b. Bio-inspired corrugated airfoil A profiled airfoil The profiled airfoil was formed by tautly wrapping a thin film around the bio-inspired corrugated airfoil in order to produce a smooth surfaced airfoil. C. Profiled airfoil
20 Aerodynamic Force Measurement Results C L.4.2 Flat Plate Profiled Airfoil Corrugated Airfoil C L.6.4 Flat Plate Profiled Airfoil Corrugated Airfoil Angle of Attack (Deg.) Angle of Attack (Deg.).4.3 Flat Plate Profile Airfoil Corrugated Airfoil.3 Flat Plate Profiled Airfoil Corrugated Airfoil C D.2 C D Angle of Attack (Deg.) Angle of Attack (Deg.) Re=58, Re=125,
21 PIV Measurement Results ( AOA = 6. deg., Re=58,) 8 Spanwise vorticity (1*1/s) Spanwise vorticity (1 *1/s) spanwise vorticity (1*1/s) Y/C*1 2 Y/C*1 2 Y/C* m/s Shadow Region m/s Shadow Region m/s Shadow Region X/C* X/C*1 A. instantaneous results X/C*1 8 Velocity (m/s) Velocity (m/s) Velocity (m/s) Y/C* m/s Shadow Region Y/C* m/s Shadow Region Y/C* m/s Shadow Region X/C*1 X/C* X/C*1 B. ensemble-averaged results
22 PIV Measurement Results ( AOA = 12. deg., Re=58,) 6 Spanwise vorticity (1*1/s) spanwise vorticity (1*1/s) spanwise vorticity (1*1/s) Y/C*1 2 Y/C*1 2 Y/C* m/s Shadow Region m/s Shadow Region m/s Shadow Region X/C* X/C* X/C*1 A. instantaneous results Velocity 6 (m/s) Velocity (m/s) Velocity (m/s) Y/C*1 2 Y/C*1 4 2 Y/C* m/s Shadow Region m/s Shadow Region m/s Shadow Region X/C* X/C*1 X/C*1 B. ensemble-averaged results
23 PIV Measurement Results ( AOA = 6. deg., Re=58,) Y/C* Spanwise vorticity (1*1/s) Y/C* Spanwise vorticity (1*1/s) Y/C* X/C*1 Velocity (m/s) Y/C* X/C*1 Velocity (m/s) Y/C* X/C*1 T.K.E Y/C* X/C*1 T.K.E X/C* X/C*1
24 Y/C* PIV Measurement Results ( AOA = 12. deg., Re=58,) Spanwise vorticity (1*1/s) Y/C* Spanwise vorticity (1*1/s) Y/C* X/C*1 Velocity (m/s) Y/C* X/C*1 Velocity (m/s) Y/C* X/C*1 T.K.E Y/C* X/C*1 T.K.E X/C* X/C*1
25 Aerodynamic Performance of An Airfoil Lift Coefficient, C l L 1 V 2 C l 2 c C L =2 Experimental data Airfoil stall Y /C * m/s GA(W)-1 airfoil shadow region Before stall -6 vort: Angle of Attack (degrees) X/C * Drag Coefficient, C d D 1 V 2 C d 2 c Experimental data Y /C * m/s GA(W)-1 airfoil shadow region After stall.5 Airfoil stall -4 vort: X/C * Angle of Attack (degrees)
26 y AerE344 Lab4: Hot wire measurements in the wake of an airfoil x Pressure rake with 41 total pressure probes (the distance between the probes d=2mm) 8 mm Lab#3 Test conditions: Velocity: V=15 m/s Angle of attack: AOA=, and 12 deg. Date sampling rate: f=1hz Number of samples: 1, (1s in time) No. of points: 2~25 points Gap between points: ~.2 inches Lab#4 Hotwire probe
27 AerE344 Lab: Hot wire measurements in the wake of an airfoil Y /C *1 GA(W)-1 airfoil Lab#4 Hotwire probe m/s shadow region vort: X/C *1 FFT arbitary scale Force -Z component (N) time sequence with data sampling rate of 1 Hz Freqency (Hz)
28 AerE344 Lab: Hot wire measurements in the wake of an airfoil Lab Hotwire probe Required data for the lab report: 1. Wake velocity profiles at AOA = and 12 deg 2. Wake turbulence intensity profiles at AOA = and 12 deg. 3. Estimated drag coefficients at AOA=, and 12 deg. 4. FFT transformation to find vortex shedding frequency in the wake of the airfoil 5. Discussions based on the measurement results
Lecture # 08: Boundary Layer Flows and Drag
AerE 311L & AerE343L Lecture Notes Lecture # 8: Boundary Layer Flows and Drag Dr. Hui H Hu Department of Aerospace Engineering Iowa State University Ames, Iowa 511, U.S.A y AerE343L #4: Hot wire measurements
More informationAn Experimental Investigation on a Bio-inspired Corrugated Airfoil
Jan. 8, 29, Orlando, Florida AIAA-29-187 An Experimental Investigation on a Bio-inspired Corrugated Airfoil Jeffery Murphy 1 and Hui Hu 2 ( ) Iowa State University, Ames, Iowa, 11 An experimental study
More informationBioinspired Corrugated Airfoil at Low Reynolds Numbers
JOURNAL OF AIRCRAFT Vol. 45, No. 6, November December 2008 Bioinspired Corrugated Airfoil at Low Reynolds Numbers Hui Hu and Masatoshi Tamai Iowa State University, Ames, Iowa 50011 DOI: 10.2514/1.37173
More informationAerodynamic Performance of a Corrugated Dragonfly Airfoil Compared with Smooth Airfoils at Low Reynolds Numbers
4th AIAA Aerospace Sciences Meeting and Exhibit 8-11 January 27, Reno, Nevada AIAA 27-483 Aerodynamic Performance of a Corrugated Dragonfly Airfoil Compared with Smooth Airfoils at Low Reynolds Numbers
More informationExperimental Investigation of the Aerodynamics of a Modeled Dragonfly Wing Section
Region I-MA Student Conference AIAA - 2005 April 8-9, 2005 / Charlottesville, Virginia Experimental Investigation of the Aerodynamics of a Modeled Dragonfly Wing Section Michelle Kwok * and Rajat Mittal
More informationEXPERIMENTAL ANALYSIS OF THE CONFLUENT BOUNDARY LAYER BETWEEN A FLAP AND A MAIN ELEMENT WITH SAW-TOOTHED TRAILING EDGE
24 TH INTERNATIONAL CONGRESS OF THE AERONAUTICAL SCIENCES EXPERIMENTAL ANALYSIS OF THE CONFLUENT BOUNDARY LAYER BETWEEN A FLAP AND A MAIN ELEMENT WITH SAW-TOOTHED TRAILING EDGE Lemes, Rodrigo Cristian,
More informationIncompressible Flow over Airfoils
Road map for Chap. 4 Incompressible Flow over Airfoils Aerodynamics 2015 fall - 1 - < 4.1 Introduction > Incompressible Flow over Airfoils Incompressible flow over airfoils Prandtl (20C 초 ) Airfoil (2D)
More informationAERODYNAMICS I LECTURE 7 SELECTED TOPICS IN THE LOW-SPEED AERODYNAMICS
LECTURE 7 SELECTED TOPICS IN THE LOW-SPEED AERODYNAMICS The sources of a graphical material used in this lecture are: [UA] D. McLean, Understanding Aerodynamics. Arguing from the Real Physics. Wiley, 2013.
More information8d. Aquatic & Aerial Locomotion. Zoology 430: Animal Physiology
8d. Aquatic & Aerial Locomotion 1 Newton s Laws of Motion First Law of Motion The law of inertia: a body retains its state of rest or motion unless acted on by an external force. Second Law of Motion F
More informationC-1: Aerodynamics of Airfoils 1 C-2: Aerodynamics of Airfoils 2 C-3: Panel Methods C-4: Thin Airfoil Theory
ROAD MAP... AE301 Aerodynamics I UNIT C: 2-D Airfoils C-1: Aerodynamics of Airfoils 1 C-2: Aerodynamics of Airfoils 2 C-3: Panel Methods C-4: Thin Airfoil Theory AE301 Aerodynamics I : List of Subjects
More informationReduction of Skin Friction Drag in Wings by Employing Riblets
Reduction of Skin Friction Drag in Wings by Employing Riblets Kousik Kumaar. R 1 Assistant Professor Department of Aeronautical Engineering Nehru Institute of Engineering and Technology Coimbatore, India
More informationBasic Fluid Mechanics
Basic Fluid Mechanics Chapter 7B: Forces on Submerged Bodies 7/26/2018 C7B: Forces on Submerged Bodies 1 Forces on Submerged Bodies Lift and Drag are forces exerted on an immersed body by the surrounding
More informationIncompressible Flow over Airfoils
< 4.7 Classical Thin Airfoil Theory > The Symmetric Airfoil * Assumptions Incompressible Flow over Airfoils i) The camber line is one of the streamlines ii) Small maximum camber and thickness relative
More informationAE Dept., KFUPM. Dr. Abdullah M. Al-Garni. Fuel Economy. Emissions Maximum Speed Acceleration Directional Stability Stability.
Aerodynamics: Introduction Aerodynamics deals with the motion of objects in air. These objects can be airplanes, missiles or road vehicles. The Table below summarizes the aspects of vehicle performance
More informationAn Experimental Study of Flexible Membrane Airfoils at Low Reynolds Numbers
Jan 7 1, 28, Reno, Nevada AIAA-28-58 An Experimental Study of Flexible Membrane Airfoils at Low Reynolds Numbers Masatoshi Tamai 1, Jeffery T. Murphy 2, and Hui Hu 3 ( ) Iowa State University, Ames, Iowa,
More informationExperimental investigation on the aft-element flapping of a two-element airfoil at high attack angle
Experimental investigation on the aft-element flapping of a two-element airfoil at high attack angle Tan Guang-kun *, Shen Gong-xin, Su Wen-han Beijing University of Aeronautics and Astronautics (BUAA),
More informationTheory of Flight Stalls. References: FTGU pages 18, 35-38
Theory of Flight 6.07 Stalls References: FTGU pages 18, 35-38 Review 1. What are the two main types of drag? 2. Is it possible to eliminate induced drag? Why or why not? 3. What is one way to increase
More informationAerE 343L: Aerodynamics Laboratory II. Lab Instructions
AerE 343L: Aerodynamics Laboratory II Lab Instructions Lab #2: Airfoil Pressure Distribution Measurements and Calibration of a Small Wind Tunnel Instructor: Dr. Hui Hu Department of Aerospace Engineering
More informationAF101 to AF109. Subsonic Wind Tunnel Models AERODYNAMICS. A selection of optional models for use with TecQuipment s Subsonic Wind Tunnel (AF100)
Page 1 of 4 A selection of optional models for use with TecQuipment s Subsonic Wind Tunnel (AF100) Dimpled Sphere Drag Model (from AF109) shown inside the TecQuipment AF100 Wind Tunnel. Cylinder, aerofoils,
More informationAvai 193 Fall 2016 Laboratory Greensheet
Avai 193 Fall 2016 Laboratory Greensheet Lab Report 1 Title: Instrumentation Test Technique Research Process: Break into groups of 4 people. These groups will be the same for all of the experiments performed
More informationDYAMIC BEHAVIOR OF VORTEX SHEDDING FROM AN OSCILLATING THREE-DIMENSIONAL AIRFOIL
27 TH INTERNATIONAL CONGRESS OF THE AERONAUTICAL SCIENCES DYAMIC BEHAVIOR OF VORTEX SHEDDING FROM AN OSCILLATING THREE-DIMENSIONAL AIRFOIL Hiroaki Hasegawa*, Kennichi Nakagawa** *Department of Mechanical
More informationLecture # 15: Aircraft and wind turbine icing and anti-/de-icing
AerE 344 Lecture Notes Lecture # 15: Aircraft and wind turbine icing and anti-/de-icing Dr Hui Hu Dr Rye M Waldman Department of Aerospace Engineering, Iowa State University Ames, Iowa 50011, U.S.A Introduction
More informationet al. [25], Noack et al. [26] for circular cylinder flows, Van Oudheusden [27] for square cylinder and Durgesh [28] for a flat plate model. The first two modes appear as phase-shifted versions of each
More informationThe effect of back spin on a table tennis ball moving in a viscous fluid.
How can planes fly? The phenomenon of lift can be produced in an ideal (non-viscous) fluid by the addition of a free vortex (circulation) around a cylinder in a rectilinear flow stream. This is known as
More informationJet Propulsion. Lecture-17. Ujjwal K Saha, Ph. D. Department of Mechanical Engineering Indian Institute of Technology Guwahati
Lecture-17 Prepared under QIP-CD Cell Project Jet Propulsion Ujjwal K Saha, Ph. D. Department of Mechanical Engineering Indian Institute of Technology Guwahati 1 Lift: is used to support the weight of
More informationTim Lee s journal publications
Tim Lee s journal publications 82. Lee, T., and Tremblay-Dionne, V., (2018) Impact of wavelength and amplitude of a wavy ground on a static NACA 0012 airfoil submitted to Journal of Aircraft (paper in
More informationROAD MAP... D-1: Aerodynamics of 3-D Wings D-2: Boundary Layer and Viscous Effects D-3: XFLR (Aerodynamics Analysis Tool)
Unit D-1: Aerodynamics of 3-D Wings Page 1 of 5 AE301 Aerodynamics I UNIT D: Applied Aerodynamics ROAD MAP... D-1: Aerodynamics of 3-D Wings D-: Boundary Layer and Viscous Effects D-3: XFLR (Aerodynamics
More informationAerodynamic characteristics around the stalling angle of the discus using a PIV
10TH INTERNATIONAL SYMPOSIUM ON PARTICLE IMAGE VELOCIMETRY PIV13 Delft, The Netherlands, July 1-3, 2013 Aerodynamic characteristics around the stalling angle of the discus using a PIV Kazuya Seo 1 1 Department
More informationAN EXPERIMENTAL STUDY OF THE EFFECTS OF SWEPT ANGLE ON THE BOUNDARY LAYER OF THE 2D WING
AN EXPERIMENTAL STUDY OF THE EFFECTS OF SWEPT ANGLE ON THE BOUNDARY LAYER OF THE 2D WING A. Davari *, M.R. Soltani, A.Tabrizian, M.Masdari * Assistant Professor, Department of mechanics and Aerospace Engineering,
More informationWelcome to Aerospace Engineering
Welcome to Aerospace Engineering DESIGN-CENTERED INTRODUCTION TO AEROSPACE ENGINEERING Notes 4 Topics 1. Course Organization 2. Today's Dreams in Various Speed Ranges 3. Designing a Flight Vehicle: Route
More informationNumerical Analysis of Wings for UAV based on High-Lift Airfoils
Numerical Analysis of Wings for UAV based on High-Lift Airfoils Sachin Srivastava Department of Aeronautical Engineering Malla Reddy College of Engineering & Technology, Hyderabad, Telangana, India Swetha
More informationPrinciples of glider flight
Principles of glider flight [ Lecture 1: Lift, drag & glide performance ] Richard Lancaster Email: Richard@RJPLancaster.net Twitter: @RJPLancaster ASK-21 illustrations Copyright 1983 Alexander Schleicher
More informationHEFAT th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics July 2012 Malta
HEFAT212 9 th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics 16 18 July 212 Malta AN EXPERIMENTAL STUDY OF SWEEP ANGLE EFFECTS ON THE TRANSITION POINT ON A 2D WING BY USING
More informationEXPERIMENTAL ANALYSIS OF FLOW OVER SYMMETRICAL AEROFOIL Mayank Pawar 1, Zankhan Sonara 2 1,2
EXPERIMENTAL ANALYSIS OF FLOW OVER SYMMETRICAL AEROFOIL Mayank Pawar 1, Zankhan Sonara 2 1,2 Assistant Professor,Chandubhai S. Patel Institute of Technology, CHARUSAT, Changa, Gujarat, India Abstract The
More informationAircraft Design Prof. A.K Ghosh Department of Aerospace Engineering Indian Institute of Technology, Kanpur
Aircraft Design Prof. A.K Ghosh Department of Aerospace Engineering Indian Institute of Technology, Kanpur Lecture - 12 Design Considerations: Aerofoil Selection Good morning friends. The last lecture
More informationExperimental and Theoretical Investigation for the Improvement of the Aerodynamic Characteristic of NACA 0012 airfoil
International Journal of Mining, Metallurgy & Mechanical Engineering (IJMMME) Volume 2, Issue 1 (214) ISSN 232 46 (Online) Experimental and Theoretical Investigation for the Improvement of the Aerodynamic
More informationEXPERIMENTAL INVESTIGATION OF LIFT & DRAG PERFORMANCE OF NACA0012 WIND TURBINE AEROFOIL
EXPERIMENTAL INVESTIGATION OF LIFT & DRAG PERFORMANCE OF NACA0012 WIND TURBINE AEROFOIL Mr. Sandesh K. Rasal 1, Mr. Rohan R. Katwate 2 1 PG Student, 2 Assistant Professor, DYPSOEA Ambi Talegaon, Heat Power
More informationComputational Investigation of Airfoils with Miniature Trailing Edge Control Surfaces
AIAA-24-5 Computational Investigation of Airfoils with Miniature Trailing Edge Control Surfaces Hak-Tae Lee, Ilan M. Kroo Stanford University, Stanford, CA 9435 Abstract Miniature trailing edge effectors
More informationADVANCES IN AERODYNAMICS OF WIND TURBINE BLADES
ADVANCES IN AERODYNAMICS OF WIND TURBINE BLADES Herning / October 3 / 2017 By Jesper Madsen Chief Engineer, Aerodynamics & Acoustics WIND ENERGY DENMARK Annual Event 2017 Agenda 1. Aerodynamic design and
More informationOUTLINE FOR Chapter 4
16/8/3 OUTLINE FOR Chapter AIRFOIL NOMENCLATURE The leaing ege circle: (usually raius =. chor length c) The trailing ege: The chor line: Straight line connecting the center of leaing ege circle an the
More informationSubsonic wind tunnel models
aerodynamics AF1300a to AF1300l A selection of optional models for use with TecQuipment s Subsonic Wind Tunnel (AF1300) Dimpled Sphere Drag Model (from AF1300j) shown inside the TecQuipment AF1300 Wind
More informationUnsteady Aerodynamic Forces: Experiments, Simulations, and Models. Steve Brunton & Clancy Rowley FAA/JUP Quarterly Meeting April 6, 2011
Unsteady Aerodynamic Forces: Experiments, Simulations, and Models Steve Brunton & Clancy Rowley FAA/JUP Quarterly Meeting April 6, Wednesday, March 8, Motivation Applications of Unsteady Models Conventional
More informationAircraft Design: A Systems Engineering Approach, M. Sadraey, Wiley, Figures
Aircraft Design: A Systems Engineering Approach, M. Sadraey, Wiley, 2012 Chapter 5 Wing Design Figures 1 Identify and prioritize wing design requirements (Performance, stability, producibility, operational
More informationDesign and Analysis of Vortex Generator and Dimple over an Airfoil Surface to Improve Aircraft Performance
ISSN: 2454-2377, Design and Analysis of Vortex Generator and Dimple over an Airfoil Surface to Improve Aircraft Performance Sonia Chalia 1*, Manish Kumar Bharti 2 1&2 Assistant professor, Department of
More informationKeywords: dynamic stall, free stream turbulence, pitching airfoil
Applied Mechanics and Materials Vol. 225 (2012) pp 103-108 Online available since 2012/Nov/29 at www.scientific.net (2012) Trans Tech Publications, Switzerland doi:10.4028/www.scientific.net/amm.225.103
More informationLow Speed Wind Tunnel Wing Performance
Low Speed Wind Tunnel Wing Performance ARO 101L Introduction to Aeronautics Section 01 Group 13 20 November 2015 Aerospace Engineering Department California Polytechnic University, Pomona Team Leader:
More informationNo Description Direction Source 1. Thrust
AERODYNAMICS FORCES 1. WORKING TOGETHER Actually Lift Force is not the only force working on the aircraft, during aircraft moving through the air. There are several aerodynamics forces working together
More informationSTUDY OF VARIOUS NACA SERIES AEROFOIL SECTIONS AND WING CONTOUR GENERATION USING CATIA V5
STUDY OF VARIOUS NACA SERIES AEROFOIL SECTIONS AND WING CONTOUR GENERATION USING CATIA V5 Pawan Kumar Department of Aeronautical Engineering, Desh Bhagat University, Punjab, India ABSTRACT Aerofoil is
More informationThe Effect of Gurney Flap Height on Vortex Shedding Modes Behind Symmetric Airfoils
The Effect of Gurney Flap Height on Vortex Shedding Modes Behind Symmetric Airfoils Daniel R. Troolin 1, Ellen K. Longmire 2, Wing T. Lai 3 1: TSI Incorporated, St. Paul, USA, dan.troolin@tsi.com 2: University
More informationAerofoil Design for Man Powered Aircraft
Man Powered Aircraft Group Aerofoil Design for Man Powered Aircraft By F. X. Wortmann Universitat Stuttgart From the Second Man Powered Aircraft Group Symposium Man Powered Flight The Way Ahead 7 th February
More informationScienceDirect. Investigation of the aerodynamic characteristics of an aerofoil shaped fuselage UAV model
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 90 (2014 ) 225 231 10th International Conference on Mechanical Engineering, ICME 2013 Investigation of the aerodynamic characteristics
More informationEvaluation of High Lift System with Oscillatory Blowing in 2.5D Configuration
Evaluation of High Lift System with Oscillatory Blowing in 2.5D Configuration Cǎtǎlin NAE, Mihai-Victor PRICOP Corresponding author INCAS - National Institute for Aerospace Research Elie Carafoli Bdul
More informationCFD AND EXPERIMENTAL STUDY OF AERODYNAMIC DEGRADATION OF ICED AIRFOILS
Colloquium FLUID DYNAMICS 2008 Institute of Thermomechanics AS CR, v.v.i., Prague, October 22-24, 2008 p.1 CFD AND EXPERIMENTAL STUDY OF AERODYNAMIC DEGRADATION OF ICED AIRFOILS Vladimír Horák 1, Dalibor
More informationAn Experimental Study of the Laminar Flow Separation on a Low-Reynolds-Number Airfoil
An Experimental Study of the Laminar Flow Separation on a Low-Reynolds-Number Airfoil Hui Hu Assistant Professor e-mail: huhui@iastate.edu Zifeng Yang Graduate Student Department of Aerospace Engineering,
More informationEXPERIMENTAL INVESTIGATION OF THE EFFECT OF VARIOUS WINGLET SHAPES ON THE TOTAL PRESSURE DISTRIBUTION BEHIND A WING
24 TH INTERNATIONAL CONGRESS OF THE AERONAUTICAL SCIENCES EXPERIMENTAL INVESTIGATION OF THE EFFECT OF VARIOUS WINGLET SHAPES ON THE TOTAL PRESSURE DISTRIBUTION BEHIND A WING Mohammad Reza Soltani, Kaveh
More informationJOURNAL PUBLICATIONS
1 JOURNAL PUBLICATIONS 71. Lee, T., Mageed, A., Siddiqui, B. and Ko, L.S., (2016) Impact of ground proximity on aerodynamic properties of an unsteady NACA 0012 airfoil, submitted to Journal of Aerospace
More informationPASSIVE FLOW SEPARATION CONTROL BY STATIC EXTENDED TRAILING EDGE
Proceedings of the International Conference on Mechanical Engineering and Renewable Energy 25 (ICMERE25) 26 29 November, 25, Chittagong, Bangladesh ICMERE25-PI-232 PASSIVE FLOW SEPARATION CONTROL BY STATIC
More informationLecture # 15: Aircraft and wind turbine icing and anti-/de-icing
AerE 344 Lecture Notes Lecture # 15: Aircraft and wind turbine icing and anti-/de-icing Dr Hui Hu Department of Aerospace Engineering, Iowa State University Ames, Iowa 50011, U.S.A Introduction Ice accretion
More informationIt should be noted that the symmetrical airfoil at zero lift has no pitching moment about the aerodynamic center because the upper and
NAVWEPS -81-8 and high power, the dynamic pressure in the shaded area can be much greater than the free stream and this causes considerably greater lift than at zero thrust. At high power conditions the
More informationUncontrolled copy not subject to amendment. Principles of Flight
Uncontrolled copy not subject to amendment Principles of Flight Principles of Flight Learning Outcome 1: Know the principles of lift, weight, thrust and drag and how a balance of forces affects an aeroplane
More informationControl of the Spanwise Distribution of Circulation on NACA 0012 and Flat Plate Wings
45th AIAA Aerospace Sciences Meeting and Exhibit 8-11 January 2007, Reno, Nevada AIAA 2007-1121 Control of the Spanwise Distribution of Circulation on NACA 0012 and Flat Plate Wings D. Williams *, S. Doshi,
More informationOPTIMUM LOCATION OF PRESSURE MEASURMENTS AROUND A WING AS A DYNAMIC CONTROL INPUT IN SMOOTH AND TURBULENT CONDITIONS
28 TH INTERNATIONAL CONGRESS OF THE AERONAUTICAL SCIENCES OPTIMUM LOCATION OF PRESSURE MEASURMENTS AROUND A WING AS A DYNAMIC CONTROL INPUT IN SMOOTH AND TURBULENT CONDITIONS Matthew Marino*, Sridhar Ravi**,
More informationEffect of Co-Flow Jet over an Airfoil: Numerical Approach
Contemporary Engineering Sciences, Vol. 7, 2014, no. 17, 845-851 HIKARI Ltd, www.m-hikari.com http://dx.doi.org/10.12988/ces.2014.4655 Effect of Co-Flow Jet over an Airfoil: Numerical Approach Md. Riajun
More informationAerodynamic Forces on a Wing in a Subsonic Wind Tunnel. Learning Objectives
Aerodynamic Forces on a Wing in a Subsonic Wind Tunnel AerodynamicForces Lab -1 Learning Objectives 1. Familiarization with aerodynamic forces 2. Introduction to airfoil/wing basics 3. Use and operation
More informationComputational Analysis of the S Airfoil Aerodynamic Performance
Computational Analysis of the 245-3S Airfoil Aerodynamic Performance Luis Velazquez-Araque and Jiří Nožička 2 Department of Mechanical Engineering National University of Táchira, San Cristóbal 5, Venezuela
More informationUniversity of Bristol - Explore Bristol Research. Publisher's PDF, also known as Version of record
Liu, X., Azarpeyvand, M., & Joseph, P. (2015). On the acoustic and aerodynamic performance of serrated airfoils. Paper presented at The 22nd International Congress on Sound and Vibration, Florence, France.
More informationWind tunnel effects on wingtip vortices
48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition 4-7 January 2010, Orlando, Florida AIAA 2010-325 Wind tunnel effects on wingtip vortices Xin Huang 1, Hirofumi
More informationUnsteady airfoil experiments
Unsteady airfoil experiments M.F. Platzer & K.D. Jones AeroHydro Research & Technology Associates, Pebble Beach, CA, USA. Abstract This paper describes experiments that elucidate the dynamic stall phenomenon
More informationAERODYNAMIC CHARACTERISTICS OF SPIN PHENOMENON FOR DELTA WING
ICAS 2002 CONGRESS AERODYNAMIC CHARACTERISTICS OF SPIN PHENOMENON FOR DELTA WING Yoshiaki NAKAMURA (nakamura@nuae.nagoya-u.ac.jp) Takafumi YAMADA (yamada@nuae.nagoya-u.ac.jp) Department of Aerospace Engineering,
More informationBUILD AND TEST A WIND TUNNEL
LAUNCHING INTO AVIATION 9 2018 Aircraft Owners and Pilots Association. All Rights Reserved. UNIT 2 SECTION D LESSON 2 PRESENTATION BUILD AND TEST A WIND TUNNEL LEARNING OBJECTIVES By the end of this lesson,
More informationWESEP 594 Research Seminar
WESEP 594 Research Seminar Aaron J Rosenberg Department of Aerospace Engineering Iowa State University Major: WESEP Co-major: Aerospace Engineering Motivation Increase Wind Energy Capture Betz limit: 59.3%
More informationHigh Swept-back Delta Wing Flow
Advanced Materials Research Submitted: 2014-06-25 ISSN: 1662-8985, Vol. 1016, pp 377-382 Accepted: 2014-06-25 doi:10.4028/www.scientific.net/amr.1016.377 Online: 2014-08-28 2014 Trans Tech Publications,
More informationNumerical and Experimental Investigations of Lift and Drag Performances of NACA 0015 Wind Turbine Airfoil
International Journal of Materials, Mechanics and Manufacturing, Vol. 3, No., February 2 Numerical and Experimental Investigations of Lift and Drag Performances of NACA Wind Turbine Airfoil İzzet Şahin
More information5th Symposium on Integrating CFD and Experiments in Aerodynamics (Integration 2012) th Symposium on Integrating CFD and Experiments in Aerodynam
5th Symposium on Integrating CFD and Experiments in Aerodynamics (Integration 202) 36 Multi-objective Optimization of Airfoil of Mars Exploration Aircraft using Evolutionary Algorithm Gaku Sasaki Tomoaki
More informationMeasurement of Pressure. The aerofoil shape used in wing is to. Distribution and Lift for an Aerofoil. generate lift due to the difference
Measurement of Pressure Distribution and Lift for an Aerofoil. Objective The objective of this experiment is to investigate the pressure distribution around the surface of aerofoil NACA 4415 and to determine
More informationFlow Over Bodies: Drag and Lift
Fluid Mechanics (0905241) Flow Over Bodies: Drag and Lift Dr.-Eng. Zayed dal-hamamre 1 Content Overview Drag and Lift Flow Past Objects Boundary Layers Laminar Boundary Layers Transitional and Turbulent
More informationEXPERIMENTAL INVESTIGATION OF WAKE SURVEY OVER A CYLINDER WITH DIFFERENT SURFACE PROFILES
EXPERIMENTAL INVESTIGATION OF WAKE SURVEY OVER A CYLINDER WITH DIFFERENT SURFACE PROFILES Abdul Ahad Khan 1, Abhishek M. B 2, Tresa Harsha P George 3 1 Under Graduate student, Department of Aeronautical
More informationBig News! Dick Kline Inventor of the KF AirFoil Contacts rcfoamfighters.
Big News! Dick Kline Inventor of the KF AirFoil Contacts rcfoamfighters. (Copy of Email from Dick Kline to rcfoamfighters on 3/28/09) --------------------------------------------------------------------------------
More informationAerodynamic Analysis of Blended Winglet for Low Speed Aircraft
, July 1-3, 2015, London, U.K. Aerodynamic Analysis of Blended Winglet for Low Speed Aircraft Pooja Pragati, Sudarsan Baskar Abstract This paper provides a practical design of a new concept of massive
More informationInduced Drag Reduction for Modern Aircraft without Increasing the Span of the Wing by Using Winglet
International Journal of Mechanical & Mechatronics Engineering IJMME-IJENS Vol:10 No:03 49 Induced Drag Reduction for Modern Aircraft without Increasing the Span of the Wing by Using Winglet Mohammad Ilias
More informationEXPERIMENTAL AND NUMERICAL STUDY OF A TWO- ELEMENT WING WITH GURNEY FLAP
25 TH INTERNATIONAL CONGRESS OF THE AERONAUTICAL SCIENCES EXPERIMENTAL AND NUMERICAL STUDY OF A TWO- ELEMENT WING WITH GURNEY FLAP F.M. Catalano PhD.( catalano@sc.usp.br ) *, G. L. Brand * * Aerodynamic
More informationDesign and Development of Micro Aerial Vehicle
Advances in Aerospace Science and Applications. ISSN 2277-3223 Volume 4, Number 1 (2014), pp. 91-98 Research India Publications http://www.ripublication.com/aasa.htm Design and Development of Micro Aerial
More informationExperimental Investigation of End Plate Effects on the Vertical Axis Wind Turbine Airfoil Blade
Experimental Investigation of End Plate Effects on the Vertical Axis Wind Turbine Airfoil Blade Rikhi Ramkissoon 1, Krishpersad Manohar 2 Ph.D. Candidate, Department of Mechanical and Manufacturing Engineering,
More informationVolume 2, Issue 5, May- 2015, Impact Factor: Structural Analysis of Formula One Racing Car
Structural Analysis of Formula One Racing Car Triya Nanalal Vadgama 1, Mr. Arpit Patel 2, Dr. Dipali Thakkar 3, Mr. Jignesh Vala 4 Department of Aeronautical Engineering, Sardar Vallabhbhai Patel Institute
More informationImproved Aerodynamic Characteristics of Aerofoil Shaped Fuselage than that of the Conventional Cylindrical Shaped Fuselage
International Journal of Scientific & Engineering Research Volume 4, Issue 1, January-213 1 Improved Aerodynamic Characteristics of Aerofoil Shaped Fuselage than that of the Conventional Cylindrical Shaped
More informationSOARING AND GLIDING FLIGHT OF THE BLACK VULTURE
[ 280 ] SOARING AND GLIDING FLIGHT OF THE BLACK VULTURE BY B. G. NEWMAN* Department of Engineering, University of Cambridge {Received 10 September 1957) INTRODUCTION In 1950 Raspet published an interesting
More informationEffect of tip vortices on membrane vibration of flexible wings with different aspect ratios
EPJ Web of Conferences 114, 02028 (2016) DOI: 10.1051/ epjconf/ 2016114 02028 C Owned by the authors, published by EDP Sciences, 2016 Effect of tip vortices on membrane vibration of flexible wings with
More informationTRAILING EDGE TREATMENT TO ENHANCE HIGH LIFT SYSTEM PERFORMANCE
28 TH INTERNATIONAL CONGRESS OF THE AERONAUTICAL SCIENCES TRAILING EDGE TREATMENT TO ENHANCE HIGH LIFT SYSTEM PERFORMANCE Catalano F.M.*, Ceròn E.D.* Greco P.C. * Laboratory of Aerodynamics EESC-USP Brazil
More informationEffect of High-Lift Devices on Aircraft Wing
IOSR Journal of Engineering (IOSRJEN) ISSN (e): 2250-3021, ISSN (p): 2278-8719 PP 01-05 www.iosrjen.org Effect of High-Lift Devices on Aircraft Wing Gaurav B. Mungekar 1, Swapnil N. More 1, Samadhan V.
More informationEffect of Flapping Frequency and Leading Edge Profile on Airfoil Leading Edge Vortical Structures
Effect of Flapping Frequency and Leading Edge Profile on Airfoil Leading Edge Vortical Structures Wesley N. Fassmann Brigham Young University Scott L. Thomson Brigham Young University Abstract By varying
More informationParasite Drag. by David F. Rogers Copyright c 2005 David F. Rogers. All rights reserved.
Parasite Drag by David F. Rogers http://www.nar-associates.com Copyright c 2005 David F. Rogers. All rights reserved. How many of you still have a Grimes rotating beacon on both the top and bottom of the
More informationDesign & Analysis of Natural Laminar Flow Supercritical Aerofoil for Increasing L/D Ratio Using Gurney Flap
Design & Analysis of Natural Laminar Flow Supercritical Aerofoil for Increasing L/D Ratio Using Gurney Flap U.Praveenkumar 1, E.T.Chullai 2 M.Tech Student, School of Aeronautical Science, Hindustan University,
More informationFlight Corridor. The speed-altitude band where flight sustained by aerodynamic forces is technically possible is called the flight corridor.
Flight Corridor The speed-altitude band where flight sustained by aerodynamic forces is technically possible is called the flight corridor. The subsonic Boeing 747 and supersonic Concorde have flight corridors
More informationComputational Analysis of Cavity Effect over Aircraft Wing
World Engineering & Applied Sciences Journal 8 (): 104-110, 017 ISSN 079-04 IDOSI Publications, 017 DOI: 10.589/idosi.weasj.017.104.110 Computational Analysis of Cavity Effect over Aircraft Wing 1 P. Booma
More informationNumerical Investigation of Multi Airfoil Effect on Performance Increase of Wind Turbine
International Journal of Engineering & Applied Sciences (IJEAS) International Journal of Engineering Applied Sciences (IJEAS) Vol.9, Issue 3 (2017) 75-86 Vol.x, Issue x(201x)x-xx http://dx.doi.org/10.24107/ijeas.332075
More informationComparing GU & Savier airfoil equipped half canard In S4 wind tunnel (France)
Some notes about Comparing GU & Savier airfoil equipped half canard In S4 wind tunnel (France) Matthieu Scherrer Adapted from Charlie Pujo & Nicolas Gorius work Contents Test conditions 3. S-4 Wind-tunnel.............................................
More informationThe Aerodynamic Improvement of a Flexible Flapping Wing
The Aerodynamic Improvement of a Flexible Flapping Wing Tadateru ISHIDE 1, Kazuya NAGANUMA 1, Ryo FUJII 1 and Kazuo MAENO 1 1 Department of Mechanical Engineering, National Institute of Technology, Kisarazu
More informationStatic Extended Trailing Edge for Lift Enhancement: Experimental and Computational Studies
Static Extended Trailing Edge for Lift Enhancement: Experimental and Computational Studies T. Liu, J. Montefort, W. Liou Western Michigan University Kalamazoo, MI 49008 and Q. Shams NASA Langley Research
More informationAircraft Stability and Performance 2nd Year, Aerospace Engineering. Dr. M. Turner
Aircraft Stability and Performance 2nd Year, Aerospace Engineering Dr. M. Turner Basic Info Timetable 15.00-16.00 Monday Physics LTA 16.00-17.00 Monday Physics LTA Exam 2 1 2 hour exam 6 questions 2 from
More informationAERODYNAMIC CHARACTERISTICS OF NACA 0012 AIRFOIL SECTION AT DIFFERENT ANGLES OF ATTACK
AERODYNAMIC CHARACTERISTICS OF NACA 0012 AIRFOIL SECTION AT DIFFERENT ANGLES OF ATTACK SUPREETH NARASIMHAMURTHY GRADUATE STUDENT 1327291 Table of Contents 1) Introduction...1 2) Methodology.3 3) Results...5
More information