Study of the Unmanned Aerial Vehicle Propeller Performances Near Ceiling: Experimental, Numerical and CFD-based Approaches

An Integrated Experimental–Numerical Methodology for Full-Scale Aerodynamic Characterization of Propeller-Driven Unmanned Aerial Vehicles

The aerodynamic characterization of propeller-driven UAVs is often constrained by the unfeasibility of testing the complete airframe–propeller assembly in a wind tunnel, since geometric scaling prevents simultaneous similarity of both the airframe and the propeller. To address this limitation, this work presents an int...

Bottom-up computational design of a hybrid tricopter agricultural spray UAV: propeller, nozzle, tank and airframe CFD optimization

This paper aims to develop and validate a hybrid tri-agri-copter (TAC) unmanned aerial vehicle (UAV) for precision agricultural spraying using a bottom-up computational fluid dynamics (CFD)-first design methodology that sequentially evaluates each sub-system before full-vehicle integration. A 2.5 kg payload...

Computation of Aerodynamic Coefficients of the Mathematical Model of a Mini-Class Unmanned Aerial Vehicle

This paper presents the development and validation of a comprehensive mathematical model for a Miniclass unmanned aerial vehicle (UAV), optimized for highfidelity flight dynamics simulation and the design of intelligent control systems. The model provides a rigorous analytical description of aerodynamic forces and mome...

STUDY OF A DISTRIBUTED PROPULSION SYSTEM WITH BOUNDARY LAYER INGESTION IMPLEMENTED IN AN UNMANNED AERIAL VEHICLE, TO BE APPLIED IN THE ANDEAN REGION

Lift-to-drag ratio of an unmanned aerial vehicle

Currently, the aerodynamics of unmanned aerial vehicles (UAVs) is not given due consideration, as it is generally believed that there is no need to improve something that already flies well. However, recent combat experience has demonstrated that UAV engagements will obviously raise questions about aerodynamic characte...

Study on the stable dynamics of AUV using computational fluid dynamics (CFD)

Understanding the hydrodynamic behavior of Autonomous Underwater Vehicles (AUVs) is essential for evaluating their stability and control. In this study, a computational approach is employed to investigate the stable motion characteristics of an AUV operating at a design speed of 1.5 m/s. The simulation setup replicates...