Modeling and Sensitivity Analysis of the Meridian Unmanned Aircraft

This paper describes the modeling and sensitivity analysis of an unmanned aerial vehicle in development for glacial ice research. The Meridian UAV is a single-engine research aircraft with fixed landing gear designed by engineers at the University of Kansas. Linear state space models are developed for both longitudinal and lateral dynamics of the UAV in a large range of airspeeds. The modeling and simulation of the Meridian were done using Advanced Aircraft Analysis and Athena Vortex Lattice software. Stability and control derivatives are estimated for use in a 6-DOF simulator for pilot training and mission planning. A sensitivity analysis is performed evaluating the effect of changing Clβ, Cnβ, and Cyβ on aircraft dynamics to investigate the effects of eight flat plate antennas attached below the wings. Conclusions are drawn from analysis of vehicle dynamics to consider precautions and special preparations for flight test operations.