Obtainment of reduced graphene oxide to sensor systems of aerospace industry

• Grant number: 17/17661-0
• Support type: Regular Research Grants
• Duration: September 01, 2020 - August 31, 2022
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal researcher: Emerson Sarmento Gonçalves
• Grantee: Emerson Sarmento Gonçalves
• Home Institution: Instituto de Aeronáutica e Espaço (IAE). Departamento de Ciência e Tecnologia Aeroespacial (DCTA). Ministério da Defesa (Brasil). São José dos Campos , SP, Brazil
• Assoc. researchers: Anna Paula Godoy Fontenele ; Hélio Ribeiro ; Ricardo Jorge Espanhol Andrade

Abstract

Increasing safety of air navigation through the development of sensory materials represents important innovation in the field of intelligent transport applications. For this purpose, graphene nanocomposites can be used.Redundant systems for aerospace navigation are essential since they provide the information required for a safe flight in case of failure of a primary system. An important parameter for guiding an aircraft is speed, and the main device responsible for indicating this measurement is known as static-pitot tube. The failure of this device has already caused serious air crashes, killing hundreds of people.Thus, this research intented to develop an aeronautical sensor that acts to assist the static-pitot system in case of failure it.The base of this sensor is composed of pressure sensitive paint and reduced graphene oxide, in order to form an electrode capable of generating a specific electrochemical response to determined oxygen concentration.For analysis of the device in question will be performed: morphological tests by MEV, FEG and AFM; structural, by techniques such as XRD, Raman, XANES and XPS; Electrochemical Impedance Spectroscopy (EIS); amperometric and differential pulse voltammetry techniques. The electrochemical techniques will support the static tests, with samples of the sensory material in glove box (simulating pressure at altitude, for calibration of the material), and dynamic in wind tunnel (simulating pressure in external flow to the sensor). (AU)