Since problems connected with atmospheric pollution emerge, the world started to think other smart solutions to convert energy. Renewable sources are now the most effecting tools that electricity distributor companies have for convert energy in a “green way”. Wind power has been used for at least 3000 years for grinding grain, pumping water or simply sailing ships, but only in the last 50-year period has become a field of study. Wind turbines are, generally speaking, machine where a good aerodynamics is the key for a good efficiency, and by this reason, several campaigns were carried on from numerous research institutes. This thesis was developed with a 5-month internship at Morfo Design Srl inside the RD section and has the aim of develop (and validate) numerical methods for aeromechanical analysis of small horizontal axis wind turbine (HAWT).