EM immunity evaluation of hexa-copter UAV

Abstract

Unmanned Aerial Vehicles (UAV), such as multirotor and single rotor drones are widely utilized in both civilian and military purposes, due to their low cost, ease of control and ability to adjust. However, drones are made of lightweight materials that are heavily affected by Electromagnetic Interference (EMI). EMI are external noise coming from External Field Source that affect the drones. Example such as jamming the command between the controller and the drone. The project focus on creating an Electromagnetic Shield with different shape and material to protect the drone from EMI. I will be using Solidworks to create the model of the drone as well as different shapes of the shielding such as dome shape and normal extruded shape. After creating the model, I will load it into the simulation software also known as CST Microwave Studio to simulate different parameter and material on the model. The fixed parameter are the probes position and linear plane wave with 200V/m along the x-axis. The various parameter is the Time-Domain and the Frequency-Domain. Using materials like CFRP and Aluminum. The results show that the design with realistic shielding matched with dome pattern with a thickness of 2.5mm and a 4mm center middle hole at the bottom plate. This design is only good when matched with CFRP as CFRP has a light-weight density than compared to Aluminum and the drone might be able to handle the weight. The conclusion of this project is using Realistic Dome shielding design with a thickness of 2.5 mm. There will be a 4 mm hole at the center of the bottom plate to allow cables and wires to pass through. The material that I will be using is CFRP as it is lightest and able to with stand 2.5 mm thickness. This design will be naming Flexi Cover.