The response to the first three editions of Modern Compressible Flow: With Historical Perspective, from students, faculty, and practicing professionals has been overwhelmingly favorable. Therefore, this new edition preserves much of this successful content while adding important new components. It preserves the author’s informal writing style that talks to the reader, that gains the readers’ interest, and makes the study of compressible flow an enjoyable experience. Moreover, it blends the classical nature of the subject with modern aspects of computational fluid dynamics (CFD) and high temperature gas dynamics so important to modern applications of compressible flow. In short, this book is a unique teaching and learning experience.