A reference companion to the author's first book - ""Space Transportation: A Systems Approach to Analysis and Design"" - this book captures the design methodologies, engineering disciplines and design/analysis computer codes in more detail. The first three chapters as a unit cover the overall Space Transportation System (STS) vehicle analysis and design process. The next six chapters and Chapter 11 cover the primary disciplines involved in this complex process. Chapter 10 deals with multidisciplinary design optimization as applied to STS. Finally, Chapters 12-14 include remaining topics germane to STS design methodologies. The two books as a series aim to give the reader a comprehensive understanding of STS analysis, engineering and design.