Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Modal Testing of a Flexible Wing UAV
Submission Author:
David Fernando Castillo Zuñiga , SP
Co-Authors:
Luiz Carlos Góes, Raphaela Carvalho Machado, Benedito Maciel, Igor Drago, David Fernando Castillo Zuñiga
Presenter: David Fernando Castillo Zuñiga
doi://10.26678/ABCM.COBEM2017.COB17-2477
Abstract
This paper presents a methodology to determine the experimental modal characteristics of a flexible wing Unmanned Autonomous Vehicle (UAV). The aircraft is a composite material made UAV, with a 4 meters wing span, high aspect ratio and high structural flexibility. Usually the modal characteristics of an aircraft are obtained experimentally by means of a Ground Vibration Test (GVT), which in turn could be used to correlate and update numerical FEM models to characterize the aeroelastic properties of the aircraft. Typically, this kind of test is carried out using accelerometers as the main type of transducer, but use of strain measurement methods has been increasing in popularity. By using strain measurements, one can not only obtain the modal properties of the structure, but also determine where there are higher levels of stress. This paper describes an ongoing research using accelerometer-based GVT for the wing of the flexible UAV and presents the setup and methodology for a combined accelerometer-strain sensor modal testing configuration.
Keywords
modal analysis, UAV, Strain Modal Analysis, experimental modal analysis, GVT
