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TMAL51 - Aircraft Conceptual Design • • • • • • • • 2 x Price Induction DGEN 380 Turbofan Cruise altitude: 15000 ft Cruise speed: Mach 0.35 L/D: 20.2 • • • • • • • • • • 1 x Price Induction DGEN 380 Turbofan Cruise altitude: 15000 ft Cruise speed: Mach 0.30 L/D: 19.5 Pilot + Passenger MTOW: 890 kg Max Payload: 140 kg Length: 7.02 m Wingspan: 9.06 m Pilot + 3 Passengers MTOW:1430 kg Max Payload: 320 kg Length: 7.5 m Wingspan: 11.49 m A MS Excel calculation sheet developed in-house at LiU is used as a reference for the aircraft’s characteristics. An iterative process ensures that the conceptual idea of the aircraft meets the necessary requirements and airworthiness. The RAPID interface is used as a hub between the calculation sheet and the CAD software. The generated CAD model in CATIA is parametric . Further functional and aesthetic changes are made to the model within the CAD software. Components such as winglets, landing gears, cabin and cargo doors, windshields and windows are added manually. Basic design guidelines includes implementation of simple solutions that ensure manufacturing feasibility and good flight characteristics. The commonality index of the used components is kept at a very minimum which makes it more applicable for a low cost production. The H-type tail design is mostly driven by the engine placement which is at rear end of the passenger cabin for structural and balance reasons. Low cruising speeds pose no need for a swept-back wing or a super-critical airfoil and cruising altitude makes pressurization not necessary and reduces structural weight even further. Important features include a spacious cargo area, short landing and take off distance, retractable landing gear, low risk of foreign object ingestion, better cockpit field of vision, twin access doors for the cabin, dimensional compatibility with general hangars. Alejandro Sobrón • Athanasios Papageorgiou • Ioanna Papageorgiou • Sharath Suranahalli