Grandss wrote:
If someone can explains me how to determine this two coefficient.

May I suggest another book that you'll find interesting:

"Aerodynamics for Naval Aviators" by H.H. Hurt, Jr
NAVWEPS 00-80T-80
Naval Air Systems Command
United States Navy

There are a number of reprints; the one I have was
made by ASA, ISBN 1-56027-140-X (sold on Amazon or
your local pilot shop).

--Sylvain