Dirkx, Dominic.

Conceptual Shape Optimization of Entry Vehicles : Applied to Capsules and Winged Fuselage Vehicles. - 1 online resource (284 pages) - Springer Aerospace Technology Ser. . - Springer Aerospace Technology Ser. .

Intro -- Contents -- Symbols -- Subscripts -- Abbreviations and Acronyms -- 1 Introduction -- 1.1 Re-entry Missions -- 1.1.1 Re-entry in the 20th Century -- 1.1.2 Re-entry in the 21st Century -- 1.2 Shape Optimization -- 1.3 Overview -- 2 Flight Mechanics -- 2.1 Flight Environment -- 2.1.1 Central Body Shape -- 2.1.2 Gravity -- 2.1.3 Atmosphere -- 2.2 Equations of Motion -- 2.2.1 Reference Frames -- 2.2.2 Forces -- 2.2.3 Entry Equations -- 2.3 Guidance Approach -- 2.3.1 Capsule -- 2.3.2 Winged Vehicle -- 2.3.3 Vehicle Stability -- 3 Aerothermodynamics -- 3.1 Basic Concepts -- 3.1.1 Thermodynamic Properties -- 3.1.2 Characteristics of Super/Hypersonic Flow -- 3.1.3 Viscosity -- 3.2 Aerodynamic Loads -- 3.3 Local-Inclination Methods -- 3.3.1 Description of Methods -- 3.3.2 Method Selection -- 3.4 Heat Transfer -- 3.4.1 Convective Heat Transfer -- 3.4.2 Capsule Considerations -- 4 Numerical Interpolation -- 4.1 Basic Concepts -- 4.1.1 Continuity and Convexity -- 4.1.2 Linear Interpolation -- 4.1.3 Bilinear Interpolation -- 4.2 Cubic Spline Curves -- 4.2.1 Fundamental Concepts -- 4.2.2 Bézier and Hermite Splines -- 4.2.3 Avoiding Self-intersection and Concavity -- 4.3 Hermite-Spline Surfaces -- 5 Vehicle Geometry -- 5.1 Analytical Parameterization -- 5.2 Winged Vehicle Parameterization -- 5.2.1 Fuselage -- 5.2.2 Wings -- 5.2.3 Fuselage-Wing Interface -- 5.2.4 Mass Model -- 5.3 Meshed Surfaces -- 6 Optimization -- 6.1 General Concepts -- 6.1.1 Problem Statement -- 6.1.2 Multi-objective Optimality -- 6.2 Particle-Swarm Optimization -- 6.2.1 Method Overview -- 6.2.2 Handling of Constraints -- 6.2.3 Multi-objective PSO -- 6.3 Shape Optimization -- 6.3.1 Performance Criteria -- 6.3.2 Constraints -- 7 Simulator Design -- 7.1 Simulation Code -- 7.2 Model Validation -- 7.2.1 Aerodynamics -- 7.2.2 Vehicle Trajectories -- 7.3 Simulation Settings. 7.3.1 General -- 7.3.2 Capsule -- 7.3.3 Winged Vehicle -- 8 Shape Analysis - Capsule -- 8.1 Monte Carlo Analysis -- 8.2 Optimization -- 8.2.1 Two-Dimensional Analysis -- 8.2.2 Three-Dimensional Optimization -- 8.3 Concluding Remarks -- 9 Shape Analysis - Winged Vehicle -- 9.1 Monte Carlo Analysis -- 9.2 Optimization Results -- 9.2.1 Baseline Optimization -- 9.2.2 Pitch-Stable Optimization -- 9.2.3 Heat-Rate Tracking Optimization -- 9.3 Concluding Remarks -- Appendix A Relative Viscous-Force Approximation -- Appendix B Winged-Vehicle Shape Generation Example -- B.1 Fuselage Shape -- B.2 Wing Shape -- Appendix C Optimal Capsule Shapes -- C.1 Evolution of Selected Point on Capsule Pareto Front -- C.2 Optimal Capsule Shapes -- Appendix D Optimal Winged-Vehicle Shapes -- D.1 Evolution of Selected Point on Winged-Vehicle Pareto Front -- D.2 Optimal Winged-Vehicle Shape Using Benchmark Settings -- References -- Index.

9783319460550


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