A Geometric Modeler for the Conceptual Design of Ducted Fan UAVs

A rapid, parametric, geometric modeler, PAGE (Parametric Aircraft Geometry Engine), has been developed for the conceptual design of ducted fan vertical takeoff and landing, unmanned air vehicles (VTOL UAV). The motivation for developing this modeler is the demand for a convenient and rapid tool for the geometric definition of UAV airframes. Conceptual/preliminary design multidisciplinary optimization codes require parametric geometric models that are less detailed than those produced by traditional CAD systems. Traditional CAD systems are time consuming and not suitable in the conceptual/preliminary design stage. Software is available which provides parametric, geometric modeling for the conceptual design of fixed-wing aircraft 1,2,3 This tool builds on lessons from the fixed-wing tools in that it has increased flexibility required for the development of VTOL UAV concepts incorporating ducted fans. This paper describes the design and usage of the software.