Thomson Design was responsible for the Design and Development of the Kestrel Unmanned Aircraft for UASci Ltd, Australia.    The Kestrel is a blended wing and body design with a wingspan of 18ft and is powered by two 3W two stroke petrol engines.  Due to reliability issues commonly faced by model aircraft engines used for UAV Applications, the twin engine concept serves to increase reliability and survivability of the air vehicle in the event of a single engine failure.  During the design phase extensive simulation work was carried on the Aerodynamic Model of the aircraft to ensure superior stability and minimized drag, even with one engine operating the aircraft will still operate comfortably.  For more information regarding the Kestrel UAV, please go to