Instruct: Classify a review into positive or negative sentiment.
Query: Curious about piston engines in airplanes?

This book assumes nothing and starts with a quick basic course in engine physics. Then Gunston proceeds to the development of the problems and engineering solutions in designing aircraft engines entailed. It really sets the stage for the piston engines of WWII and then steps through their evolution. Really a terrific history of aircraft piston evolution. What not 5 stars? The binding really sucks. Everytime I turn a page it falls out. Very aggravating.