Hurt's text is a true classic but his wording--is very sophisticated and one topic build upon the other---it's not really the type of text you go to for quick answers---but if you read chapter one 'basic aerodynamic--he goes over EAS and compressibilty as well as the the relationship between dyanamic and static pressure--without that his later chapter on high speed aerodynamics is nearly incomprehensible---but with out his satbility and control chapter---those aspects of high speed aerodynamics is also nearly incomprehensible---you MUST READ it beginning to end--or you wont gwet it---when I say basic I don't mean superficial---I mean foundational---later courses--will give you all the Blade element theroy you want---the book is very helpful for begining aerodynamics students but---you don't get easy answers--H. H Hurt can really make it HURT
PA