Investigation of Transonic Drag Computations in Aerodynamic ...

TABLE OF CONTENTS
List of Figures..................................................................................................................................................i
List of Tables ..................................................................................................................................................ii
Abstract..........................................................................................................................................................iii
Acronyms and Symbols ................................................................................................................................. iv
1.0 Introduction.......................................................................................................................................... 1
2.0 Transonic Drag and Wave Drag Theory .............................................................................................. 2
3.0 Approach.............................................................................................................................................. 6
4.0 Methods................................................................................................................................................ 7
4.1 APAS................................................................................................................................................ 7
4.1.1 Program Description ............................................................................................................... 8
4.1.2 Geometry Preparation ............................................................................................................. 8
4.1.3 APAS Geometries................................................................................................................. 11
4.1.4 APAS Run Conditions and Run Setup.................................................................................. 14
4.1.5 APAS Results........................................................................................................................ 14
4.1.6 RLV Application Results ...................................................................................................... 20
4.1.7 APAS “Coke-bottle” Geometry Results ............................................................................... 24
4.2 WAVDRAG ................................................................................................................................... 26
4.2.1 Program Description ............................................................................................................. 26
4.2.2 Geometry Input Procedure .................................................................................................... 27
4.2.3 Computation Procedure and Results ..................................................................................... 28
5.0 APAS and WAVDRAG Comparisons............................................................................................... 28
5.1 Area Comparisons .......................................................................................................................... 29
5.2 Wave Drag Comparisons .................................................................................................................... 36
6.0 Conclusions........................................................................................................................................ 41
7.0 Acknowledgments.............................................................................................................................. 42
8.0 References.......................................................................................................................................... 43
Appendix A: WAVDRAG Input Files......................................................................................................... 44
Input File Description: .............................................................................................................................. 44
Appendix B: RLV & Trial 3b APAS Area Build-ups.................................................................................. 52