Alaskari, MustafaMustafaAlaskariAbdullah, Oday IbraheemOday IbraheemAbdullahMajeed, Mahir H.Mahir H.Majeed2019-07-192019-07-192019-06-05IOP Conference Series: Materials Science and Engineering 3 (518): 032020 (2019-06-05)http://hdl.handle.net/11420/2932Owing to the fast development in the energy field, the demands are increasing to improve energy efficiency and lifetime of wind turbine. The wind blades are considered as the most important and expensive part in the wind system. Therefore, it's important to understand deeply the behaviour of turbine blades. In this research paper, full details were presented to analyze and optimize the behaviour and performance of the blade of the small horizontal axis wind turbine (less than 1 KW). QBlade software was used to simulate the wind turbine blade during the working conditions. The mathematical formulations which used in QBlade software were based on the Blade Element Momentum method (BEM). It was studied deeply the effect of design parameters (Twist Angle and Chord length) on the behaviour and performance of the wind turbine. It was used SG6043 airfoil for 10 different sections of 1.17 m blade length. The obtained results were of high accuracy, and it was proved that the QBlade software is reliable to analyze the blades of wind turbine. The paper exhibits the necessary steps to build and optimize the blade of wind turbine, in addition to the features and advantages of the software.enhttps://creativecommons.org/licenses/by/3.0/TechnikConference Paperurn:nbn:de:gbv:830-882.04389510.15480/882.233610.1088/1757-899X/518/3/03202010.15480/882.2336Conference Paper