Wilke G.A. Aerodynamic optimization of helicopter rotor blades using variable fidelity methods: Diss. … Dr.-Ing. / Deutsches Zentrum für Luft- und Raumfahrt, Institut für Aerodynamik und Strömungstechnik, Braunschweig. - Köln: DLR, 2017. - x, 164 p.: ill., tab. - (Forschungsbericht; 2017-64). - Res. also Germ. - Bibliogr.: p.140-150. - ISSN 1434-8454 Шифр:(Pr 1120/2017-64) 02  Место хранения:   02 | Отделение ГПНТБ СО РАН | Новосибирск

Оглавление / Contents

1 Introduction ................................................. 1 1.1 Motivation .............................................. 1 1.2 State of the Art ........................................ 2 1.3 Thesis and Research Contributions ...................... 14 2 Surrogate Based Optimization with Variable-Fidelity Methods ..................................................... 15 2.1 General Concept ........................................ 15 2.2 Design of Experiments .................................. 16 2.3 Surrogate Modeling ..................................... 20 2.4 Numerical Optimization ................................. 30 2.5 Optimization Framework ................................. 34 2.6 Example Problem ........................................ 36 3 Investigation and Selection of Aerodynamic Models ........... 44 3.1 Planform Parameters and their Influence ................ 45 3.2 Theoretical Review of Aerodynamic Models ............... 48 3.3 Application of Aerodynamic Models to Different Rotor Geometries ............................................. 53 3.4 Choice of Fidelities ................................... 68 4 Detailed Analysis of Variable-Fidelity based Optimizations .. 70 4.1 7 A Model Rotor Optimization with Four Parameters ...... 70 4.2 Industrial Scale Rotor Optimization with Ten Parameters ............................................ 100 4.3 Reflection of the Variable-Fidelity Optimizations and Recommendations ................................... 132 5 Summary .................................................... 135 Bibliography ............................................... 140 A Appendix ................................................... 151 A.l Details on Surrogate Based Optimization ............... 151 A.2 Details on Aerodynamic Models ......................... 156 A.3 High-Fidelity Data Generation for Industrial Scale Rotor Optimization .................................... 163