Theory of Wing Sections : Including a Summary of Airfoil Data - Abbott, Ira H.

Theory of Wing Sections : Including a Summary of Airfoil Data

Ira H. Abbott

Yayınevi: Dover

Yayın tarihi: 12/1960

ISBN: 9780486605869

İngilizce | 693 Sayfa | 143 mm x 212 mm

Tür: Genel Mühendislik

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Concise compilation of subsonic aerodynamic characteristics of NACA wing sections, plus description of theory. 350 pages of tables.

Contents:
1. THE SIGNIFICANCE OF WING-SECTION CHARACTERISTICS
Symbols.
The Forces on Wings.
Effect of Aspect Ratio.
Application of Section Data to Monoplane Wings:
a. Basic Concepts of Lifting-line Theory. b. Solutions for Linear Lift Curves.
c. Generalized Solution.
Applicability of Section Data.
2. SIMPLE TWO-DIMENSIONAL FLOWS
Symbols.
Introduction.
Concept of a Perfect Fluid.
Equations of Motion.
Description of Flow Patterns. Simple Two-dimensional Flows:
a. Uniform Stream.
b. Sources and Sinks.
c. Doublets.
d. Circular Cylinder in a Uniform Stream.
e. Vortex.
f. Circular Cylinder with Circulation.
3. THEORY OF WING SECTIONS OF FINITE THICKNESS
Symbols.
Introduction.
Complex Variables.
Conformal Transformations.
Transformation of a Circle into a Wing Section.
Flow about Arbitrary Wing Sections.
Empirical Modification of the Theory.
Design of Wing Sections.
4. THEORY OF THIN WING SECTIONS
Symbols.
Basic Concepts.
Angle of Zero Lift and Pitching Moment
Design of Mean Lines
Engineering Applications of Section Theory
5. THE EFFECTS OF VISCOSITY
Symbols
Concept of Reynolds Number and Boundary L
Flow around Wing Sections
Characteristics of the Laminar Layer.
Laminar Skin Friction
Momentum Relation
Laminar Separation
Turbulent Flow in Pipes
Turburlent Skin Friction
Calculation of Thickness of the Turbulent Layer
Turbulent Separation
Transition from Laminar to Turbulent Flow
Calculation of Profile Drag
Effect of Mach Number on Skin Friction
6. FAMILIES OF WING SECTIONS Symbols
Introduction
Method of Combining Mean Lines and Thickness Distributions
NACA Four-digit Wing Sections:
a. Thickness Distributions
b. Mean Lines
c. Numbering System
d. Approximate Theoretical Characteristics
NACA Five-digit Wing Sections:
a. Thickness Distributions
b. Mean Lines
c. Numbering System
d. Approximate Theoretical Characteristics
Modified NACA Four-and Five-digit Series Wing Sections
NACA 1-Series Wing Sections:
a. Thickness Distributions
b. Mean Lines
c. Numbering System
d. Approximate Theoretical Characteristics
NACA 6-Series Wing Sections:
a. Thickness Distributions
b. Mean Lines
c. Numbering System
d. Approximate Theoretical Characteristics
NACA 7-Series Wing Sections
Special Combinations of Thickness and Ca
7. EXPERIMENTAL CHARACTERISTICS OF WING SECTIONS
Symbols
Introduction
Standard Aerodynamic Characteristics
Lift Characteristics:
a. Angle of Zero Lift
b. Lift-curve Slope
c. Maximum Lift
d. Effect of Surface Condition on Lift Characteristics
Drag Characteristics:
a. Minimum Drag of Smooth Wing Sections
b. Variation of Profile Drag with Lift Coefficient
c. Effect of Surface Irregularities on Drag Characteristics
d. Unconservative Wing Sections
Pitching moment Characteristics
8. HIGH-LIFT DEVICES
Symbols
Introduction
Plain Flaps
Split Flaps
Slotted Flaps:
a. Description of Slotted Flaps
b. Single-slotted Flaps
c. External-aifoil Flaps
d. Double-slotted Flaps
Leading-edge High-lift Devices:
a. Slats
b. Slots
c. Leading-edge Flaps
Boundary-layer Control
The Chordwise Load Distribution over Flapped Wing Sections
9. EFFECTS OF COMPRESSIBILITY AT SUBSONIC SPEEDS
Symbols
Introduction
Steady Flow through a Stream Tube:
a. Adiabatic Law
b. Velocity of Sound
c. Bernoulli's Equation for Compressible Flow
d. Cross-sectional Areas and Pressures in a Stream Tube
e. Relations for a Normal S
First-order Compressibility Effects:
a. Glauert-Prandtl Rule
b. Effect of Mach Number on the Pressure Coefficient
Flow about Wing Sections at High Speed:
a. Flow at Subcritical Mach Numbers
b. Flow at Supercritical Mach Numbers
Experimental Wing Characteristics at High Speeds:
a. Lift Characteristics
b. Drag Characteristics
c. Moment Characteristics
Wings for High-speed Applications
REFERENCES
APPENDIX
I. Basic Thickness Forms
II. Mean Lines
III. Airfoil Ordinates
IV. Aerodynamic Characteristics of Wing Sections

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