Abstract: This paper deals with numerical investigation about both longitudinal and lateral-directional static aerodynamic characteristics of a new twin-engine commuter aircraft with eleven seats, Tecnam P2012. Numerical analyses have been performed on complete and many partial aircraft configurations in order to evaluate the contribution of each aircraft component and to estimate their mutual interferences. The analyses have been conducted at wind tunnel Reynolds number in order to provide a validation of the numerical investigation. Finally numerical analyses have been also performed at free flight conditions, in order to have an estimation of the Reynolds number effect in especially on the aircraft base drag coefficient and on the wing span loads in both flap up and flap down conditions.

• Publication Date: 19-Apr-2015
• DOI: 10.15224/978-1-63248-045-3-44
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Abstract: The use of distributed power generation systems in power systems is increasing day after day. Despite the contribution they make to the energy needs of these systems, they can also have adverse effects on the grid. Therefore, specific constraints are brought to the grid connection of the distributed energy systems and governments constitute legislations depending on their grids. In this study, available grid connection conditions for the wind turbines in Turkey have been presented and discussed by comparing these criteria with the similar ones around the world.

• Publication Date: 19-Apr-2015
• DOI: 10.15224/978-1-63248-045-3-45
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