Unmanned Aerial Vehicles (UAV) increasingly are seen as the next step in aircraft evolution with the potential to replace manned aircraft over a broad range of civilian roles. Industry, who recognise the cost effectiveness of UAV, is keen to grasp this potential and the technology is rapidly developing with numerous projects currently in operation of development throughout Europe and worldwide. In response to this needs University of Naples has developed a MALE configuration TurboProp engined using innovative structural and aerodynamic solutions. Regarding the structural aspect the extensive use of composite materials led to the definition of a weight efficient vehicle capable to carry on up to 500 kg of payloads covering a wide range of medium altitude missions. With reference to aerodynamic solution, an Eppler modified profile, numerically optimized, has been adopted for its efficiency that has granted long endurance and, coupled with the power provided by the chosen engine (PT6A – 67 B), high performance. The aeroelastic assessment has revealed that no critical phenomena occur in the flight envelope. Once defined the aerodynamic and structural aspects, an analysis of reliability and safety has been performed aimed to evaluate MTBL (Mean Time Between Loss) and MTBCF (Mean Time Between Critical Failure) features
