A step backwards
The topics covered in this book are very good. It is a good reference book for mechanical engineering students doing an intermediate course in turbomachinery. However, due to the numerous typing errors, the 3rd edition is actually a better book. It makes it very challenging to follow, especially for students. Also, the theory is sometimes rather cryptic and one can do with a bit more detail in places. The velocity triangles can definitely do with more detail. The section on nozzles and diffusers is good, albeit a bit short.