23rd Congress of International Council of the Aeronautical Sciences, 8-13 September, 2002, Toronto, Canada
Paper ICAS 2002-P4

AERODYNAMIC MODELING AND PERFORMANCE ANALYSIS OF A SHROUDED-FAN UNMANNED AERIAL VEHICLE

N. De Divitiis
University of Rome "La Sapienza", Italy

Keywords: unmanned vehicle, apparent mass, lagrangian

This paper deals with the estimation of the aerodynamic coefficients and performance analysis for a shrouded-fan unmanned aircraft. The complexity of the flow around this kind of vehicles in conjunction with the strong interaction between fan flow and the velocity field about the fuselage, make the aerodynamic coefficients computation a very difficult task. The purpose of this paper is to formulate, by means of the Lagrangian approach, an aerodynamic model for the determination of the aerodynamic coefficients of the shroud, suitable for performance analysis.

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