Approximate methods for weapon aerodynamics / Frank G. Moore.

Format:

Book

Author/Creator:

Moore, Frank G. (Frankie Gale), 1944-

Series:

Progress in astronautics and aeronautics ; v. 186.

Progress in astronautics and aeronautics ; v. 186

Language:

English

Subjects (All):

Projectiles, Aerial--Aerodynamics.

Projectiles, Aerial.

Ballistic missiles--Aerodynamics.

Ballistic missiles.

Aerodynamics.

Physical Description:

xi, 464 pages : illustrations ; 24 cm.

Place of Publication:

Reston, Va. : American Institute of Aeronautics and Astronautics, [2000]

Contents:

I. Weapon System Aerodynamic Requirements 2

II. Uses of and Methods to Obtain Aerodynamics 7

III. Tradeoffs in Methods Selection 10

Chapter 2 Navier-Stokes and Euler Equations 19

I. Continuum Flow Assumption 20

II. Navier-Stokes Equations 22

III. Euler Plus Boundary Layer Plus Base Drag 27

IV. Numerical Flowfield Solutions 33

Chapter 3 Perturbation Methods 35

II. Component Buildup of Aerodynamics 40

III. Linearized Flow and Slender Body Assumptions 41

IV. Hybrid Theory of Van Dyke 52

V. Lifting Surface Theory 57

VI. Three-Dimensional Thin Wing Theory 64

A. Axial Force Wave Drag 65

B. Wing Normal Force and Center of Pressure 72

C. Transonic Flow 79

VII. Roll Damping Moment 80

A. Subsonic Flow (M[subscript infinity] < M[subscript crit]) 82

B. Supersonic Flow (M[subscript infinity] [greater than or equal] 1.2) 83

C. Transonic Flow (M[subscript fb] [less than or equal] M[subscript infinity] < 1.2) 86

VIII. Pitch Damping Moment 89

A. Subsonic Flow (M[subscript infinity] < 0.8) 90

B. Supersonic Flow (M[subscript infinity] [greater than or equal] 1.2) 92

C. Transonic Flow (0.8 [less than or equal] M[subscript infinity] < 1.2) 95

IX. Interference Effects 98

A. Wing-Body Interference 98

B. Wing-Tail Interference 103

Chapter 4 Local Slope And Empirical Methods 115

I. Tangent Wedge Method 117

II. Tangent Cone Method 119

III. Shock Expansion Theory 123

IV. Newtonian Impact Theory 132

V. Hybrid Theory of Van Dyke Plus Modified Newtonian Theory 136

VI. Second-Order Shock Expansion Plus Modified Newtonian Theory 140

VII. Skin Friction Drag 143

VIII. Empirical Methods 149

A. Transonic Wave Drag Prediction 149

B. Viscous Separation and Rotating Band Drag 151

C. Body-Alone Lift Properties for M[subscript infinity] < 1.2 154

D. Wing-Alone Normal Force at Transonic Speeds 157

E. Base Drag 161

IX. Configuration Aerodynamics at Low Angle of Attack 169

Chapter 5 Nonlinear Aerodynamic Approximations 183

I. Nonlinear Aerodynamics Phenomena 186

II. Body-Alone Normal Force and Center of Pressure 191

III. Wing-Alone Normal Force and Center of Pressure 200

IV. Wing-Body and Body-Wing Interference Due to Angle of Attack 209

V. Wing-Body and Body-Wing Interference Due to Control Deflection 237

VI. Nonlinear Wing-Tail Interference Model 246

VII. Axial Force Coefficient at Angle of Attack 258

VIII. Configuration Aerodynamics 265

Chapter 6 Aerodynamics of Noncircular Body Configurations 295

I. Background and Survey of Nonaxisymmetric Body Methods 297

II. Review of Jorgensen Method 300

III. Body-Alone Axial Force Approach 302

IV. Newtonian and Slender Body Theory Factors 304

V. Reynolds Number Effect on Crossflow Drag Coefficient 315

VI. Scaling Considerations Based on Slender Body Theory 317

VII. Wing-Body Configurations with Noncircular Cross Sections 323

VIII. Wing-Body-Tail Configurations 330

IX. Variable Body Cross-Sectional Shapes 330

X. Summary of Computational Procedure for Aerodynamics of Nonaxisymmetric Body Configurations 331

XI. Comparison of Method to Experiment 332

Chapter 7 Aerodynamic Heating at Hypersonic Mach Numbers, Including Real Gas Effects 349

II. Real Gas Computational Procedure 353

III. Normal and Oblique Shock Waves in Real Gas Environments 355

A. Normal Shock Waves 356

B. Oblique Shock Waves: Two-Dimensional or Wedge Flows 358

C. Oblique Shock Waves: Axisymmetric Conical Flows 362

IV. Computation of Properties Across Expansion Waves in Real Gas Environments 367

V. Modified Newtonian Theory for Real Gases 375

A. Frozen Flow 376

B. Equilibrium Flow 378

VI. Second-Order Shock Expansion Theory for Real Gases 379

VII. Aerodynamic Heating at Hypersonic Mach Numbers 383

A. Entropy Layer Effects 385

B. Engineering Approximations for Aeroheating 388

C. Example Application of Approximate Methods for Boundary-Layer Heating 395

Chapter 8 Applications of Aerodynamics 401

II. Structural Loads 404

B. Approach to Distribute Loads 405

C. Roll Position of [phis] = 0 deg 407

D. Changes for the [phis] = 45 deg Roll Position 412

E. Loads, Shear, and Bending Moments 414

F. Method Application 416

III. Minimum Drag Shapes 423

IV. Multifin Weapon Aerodynamics 429

B. Approach and Analysis 430

C. Computational Fluid Dynamics Predictions for Multifin Aerodynamics 433

D. Comparison of New Method for Multifin Aerodynamics to Experiment 439

V. Weapon Performance 447

VI. Summary of Aerodynamic Prediction Methods 453

Chapter 9 Future Direction for Aeroprediction Methodology 459

I. Semi-Empirical Code Requirements 459

II. Computational Fluid Dynamics Code Needs 461.

Notes:

Includes bibliographical references and index.

ISBN:

1563473992

OCLC:

44873576