Bioinspired Electroactive Aeronautical multiscale LIVE-skin

Introduction

Inspired from the highly efficient aerodynamics of birds, the versatility of the jelly-moon fringes, the manta ray, and sharks, the multidisciplinary project BEALIVE introduces a new science and technology at the interface between aeronautics and bioengineering.

Project Overview

The project creates a live skin composed of an innovative moving interface between an air-vehicle and the surrounding turbulence. Applied around a body, e.g., around an aircraft's wing, this contributes to increasing the aerodynamic performance and reducing noise far beyond all systems currently under study.

Technical Composition

The solid-fluid interface is composed of a large number of electroactive fringes made of an optimized combination of Carbon Nano-Tubes and Graphene with high sensing and actuation capacity, able to deform and vibrate. This allows the skin to interact with the surrounding inhomogeneous turbulent flow.

Fluid-Structure Interaction

The interface between the solid and the fluid consists of the active fringes (shells) forming a porous medium, modeled by poroelastic theory. The interaction and manipulation of the fluid-structure and fluid-fluid turbulent interfaces will create an optimal new medium with no distinction between the fluid and the solid structure.

Data and Technology Integration

The live skin and the overall design will contain Big Data and rely on Artificial Intelligence and on a Controller that will define and optimize the dynamics of the system in real time and on a large scale.

Optimization Process

The optimization will be based on data assimilation from:

1. Wind Tunnel experiments
2. Hi-Fi CFDSM (Computational Fluid-Dynamics Structural Mechanics) using a triple solver coupling:
   • Structural modelling (SM)
   • Porous layer
   • Turbulent flow

Design Hierarchy

The design has as its kernel a hierarchy of the interfaces, from micro to macroscale, between material-material, material-flow, and flow-flow. Such enhanced levels of manipulation will allow drastic increases in aerodynamic performance and energy efficiency in all flight phases, beyond any currently foreseeable targets.