Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Title of book misleads helicopter pilots

I found this book to be an extremely advanced treatise on design aerodynamics. My experience as a Navy Pilot (where I was privileged to have participated in countless hours of classroom aerodynamics) and 33 years as an Airline Captain was not adequate for an understanding of 99.99% of the discussions in this book.If one is seeking to design an advanced helicopter, he will find this book to contain most anything he needs, that is, if he could find someone to explain what is in print.This book is suitable only for someone with a PHD in Helicopter aerodynamics, or one seeking a PHD in that field.It is DEFINITELY not a book for a helicopter pilot seeking to improve and or increase his knowledge of flying techniques and/or flying theory.