I bought the book for my son's coursework in a Powered Lift module, as part of an Aeronautical and Aerospace Engineering degree course.
He describes the content as really good, easy to understand and very comprehensive. It is certainly the best text book out there on this subject area.
However the reason it does not get 5 stars is the paper , print, binding , and general presentation of the book are not of sufficient quality to merit a price tag of £20 , let alone the £90+ that is sells for. The quality is quite frankly very disappointing. I accept this book probably has a very limited audience and will only sell in very small numbers, but to produce it so cheaply and charge so much smacks of being a rip-off.