Well, I am not going to say almost the same many people said in previous reviews, because most of them are correct. Essencially, and commonly accepted, this is a very good book in the topic.
Besides the previous, I spent nearly 3 months to read the whole book in my partially "in itinere" spare time. From that reading, I came to some approaches that I enlight few lines now:
a) This book covers almost all involved technology when designing a rocket propulsion system. Nevertheless, there are few things that are not as clear as it should be for novices in such a topic, especially basis on rockets paths, or another way to say, basis on why motors are designed as they are. It has nosense to tell deeply how a rocket engine is working if you dont know what duty has this propulsion system to accomplish. In this great book, many design parameters are involved as input data to design a rocket system, but little or no information about such needs is available. For example, rocket's path to orbit, and chosen orbit's type. This path defines rocket's setup. For a clear and comprehensive approach to this topic, and in order to understand the parameters involved, I highly recommend another more theorical book, which explains in a marvellous way this: Introduction to Rocket Science and Engineering. The selected book is not as hard engineered book as the one I am reviewing now, but it explains in a very easy way what a rocket system must do, and why.
b) After reading the whole book, there are some missed systems (and important ones) that are not fully covered. I already know Sutton's book about cryogenics, from which data is gathered and inserted in this book, but excluding that, cryo systems are totally off this book. I should say, anyway, that it shouldnt, because authors also states that cryo systems are most time part of the engine's design. Although some data about cryo turbopumps are mentioned, there are big uncertainties in such a topic. If I recall correctly, turbopumps has been included in this eight's version.
c) Considering b), there are also some important misses in liquid fuels, and especifically in one; Hydrogen. Because the very difficult handling of this fuel, and its very anomalous properties, some information about system's handling with this element is A MUST. It is not the same to burn alcohol, or hydrazine, or just gasoline, or whatever, than burning Hydrogen. There is a BIG complexity in that, and rockets uses extensivelly that fuel. This should need another extra chapter by its own, both storing, and handling.
d) Although there are many mentions to materials in the system's design, most times acurate material's information is missing. There are some hints to special materials alloys, like some Titanium alloys, or refractory ones in noozles for some specific cases, but most times this topic is avoided. I understand that this represents a major milestone for contractors, and most times data is propietary, but in a rocket's propulsion system, this is MANDATORY.
Anyway, and beyond the previous hints, I consider this book a great one, so I set a five star score. It seems almost all books I buy deserves the money I spent on them, and this book is not the exception.
Nice book anyway, but with some important misses. Since rocket's are 95% engine related systems, this books covers 95% of rocketry.