Design Optimization of Advanced Multi-rotor Unmanned Aircraft System Using FSI

Abstract

At the moment, multi-rotor MAV is being proposed for many critical applications so the engineer must provide an MAV, which have good specifications such as the high lifetime, high operational speed, more secure on-flight, and low maintenance cost in order to survive at critical applications. This work deals with the conceptual design and its optimization of the hybrid multi-rotor MAV for high-speed applications by using FSI simulation. The proposed MAV has characterized by the use of two counter-rotating propellers for vertical operation, and two propellers are located in the rear part of the MAV for forward force and yawing control. The airframe and propellers of the MAV are preferred to be of Kevlar composite, which allows for propeller flexibility without sacrificing durability. High lifetime and low probability of failures in terms of FSI analysis are to be achieved by the implementation of Kevlar composite, which has good impact load withstanding capability. The present work aims at performing a numerical simulation to be used for investigating the design behavior of the MAV by simulating the displacement and principal stress in order to withstand at high-speed operation. The design process entailed the overall system design, component selection, and placement in CATIA. FSI simulation of stress and displacement throughout the Kevlar MAV has been analyzed by Ansys 16.2, and thereby, the design optimization has been carried out in the MAV.