For many model rocketeers, technical reports were an important part of learning the hobby. Both Estes and Century published numerous such reports covering different aspects of the hobby, and they helped many a rocketeer learn about the technical aspects of the hobby. Apogee Components, a maker of model rocket kits and motors, has entered the publishing field with a series of publications suitable for both general and educational use. One such publication is Model Rocket Propulsion by Tim Van Milligan. 

This 12-chapter book starts with the roots of rocketry and explains various aspects of rocket science and model rocketry applications. The book is written in an easy-to-understand manner. Yes, there is math, but you can skip it and still learn much from this book. From this book you can learn about the legendary (and possibly apocryphal) rocket flight of Wan Hu as well as how rockets became a part of the United States' national anthem. 

The focus is on propulsion, and the early chapters provide a good foundation, with explanations of Newton's Laws of Motion and the thrust equation. Chapter 5 starts the discussion of the model rocket motor construction and operation. Chapter 6 continues with model rocket motor classification, and chapter 7 addresses specific impulse. Different model rocket motors are compared in chapter 8. The math gets heavy in Chapter 9's discussion of Basic Rocket Performance, but again, you can learn quite a bit regardless of how far you dig into the equations. 

Chapters 10 and 11 address multi-stage rockets and clustered engine models, respectively, with clear, easy-to-understand explanations of these type of rockets. Each chapter has questions at the end. Also included is a supplement titled "Activities for Model Rocket Propulsion." This includes suggested activities to demonstrate the principles explained in each chapter. There also is an answer key for several of the math questions. 

This book is suitable for classroom use or for the rocket flyer who wishes to expand his or her knowledge of the hobby. It would be a worthwhile addition to any rocketeer's library.