MANEUVERABILITY OF AN strongUAVstrong WITH COANDA EFFECT BASED LIFT.PDFVIP

MANEUVERABILITY OF AN UAV WITH COANDA EFFECT BASED LIFT PRODUCTION Nikola Mirkov , Bosko Rasuo PhD student, University of Belgrade, Institute of Nuclear Sciences ’Vinca’, University of Belgrade, Faculty of Mechanical Engineering nikolamirkov@; brasuo@mas.bg.ac.rs Keywords: Coanda Effect, Unmanned Aerial Vehicle, Computational Fluid Dynamics, 6-DOF model Abstract This paper presents a study built around numeri- cal simulations of axially- symmetric body repre- senting an Unmanned Aerial Vehicle (UAV) that uses Coanda effect for producing lift force. The purpose is to make a maneuverability study of such an UAV under flow conditions denoted as asymmetric Coanda effect. Dynamically chang- ing the flow picture enables change of net force on the aircraft. Capability to control the di- rection of the net force is used for maneuver- Fig. 1 Cross section of the Coanda effect UAV ing the aircraft. All simulations are done us- ing Finite-volume computational fluid dynamics ity in evaluating many different aircraft geome- (CFD) code. Turbulence is accounted using k tries and flow configurations hardly accessible Shear Stress Transport model. The study presents with real models. Also coupling with optimisa- natural continuation of research efforts reported tion algorithms is available, that could generate in [1]. optimized UAV shapes. In our previous paper [1] we have showed a 1 Introduction universal parametric geometry representation of