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Analysis of gust response including control surface freeplay and friction

Grant number: 17/08008-1
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): August 01, 2017
Effective date (End): June 30, 2019
Field of knowledge:Engineering - Mechanical Engineering - Mechanics of Solids
Principal Investigator:Douglas Domingues Bueno
Grantee:Larissa Drews Wayhs Lopes
Host Institution: Faculdade de Engenharia (FEIS). Universidade Estadual Paulista (UNESP). Campus de Ilha Solteira. Ilha Solteira , SP, Brazil
Associated scholarship(s):18/23348-6 - A critical evaluation of the Hénon's technique for solving aeroelastic problems with control surface friction and freeplay, BE.EP.IC


Nonlinear control surface effects can modify the aeroelastic dynamics during a flight. In particular, control surface friction and freeplay can change the stability behavior which can imply in restrictions in a flight envelope. In this context, this research involves the study of aeroelastic gust responses in a three degrees of freedom typical section considering friction and freeplay acting on the flap. Time domain analysis is performed using the Hénon's technique for numerical integration. The results show how important it is to consider these nonlinear effects to compute gust reponses in an aircraft design. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
WAYHS-LOPES, LARISSA DREWS; DOWELL, EARL H.; BUENO, DOUGLAS D.. Influence of friction and asymmetric freeplay on the limit cycle oscillation in aeroelastic system: An extended Henon's technique to temporal integration. JOURNAL OF FLUIDS AND STRUCTURES, v. 96, . (18/23348-6, 18/25194-6, 17/08008-1)

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