Autor(es)

Marques, Alexandre Noll ^[1] ; Azevedo, Joao Luiz F. ^[2]

Afiliação do(s) autor(es)

^[1] Inst Tecnol Aeronaut, Div Aeronaut Engn, BR-12228900 Sao Jose Dos Campos - Brazil

^[2] Inst Aeronaut & Espaco, Aerodynam Div, BR-12228903 Sao Jose Dos Campos - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF AIRCRAFT; v. 45, n. 5, p. 1564-1578, SEP-OCT 2008.
• Citações Web of Science: 2

Resumo

In many complex aerospace applications, it is common to use numerical tools to evaluate the unsteady aerodynamic behavior. The present work presents an alternate formulation for the state-space representation of aeroelastic systems based on digital control theory that is shown to be more effective and accurate for the coupling of numerical solutions with such systems. The application of the z transform allows for direct frequency domain representations of the aerodynamic solutions without the need for approximating models, as generally occurs in other state-space formulations. This fact also makes this new methodology a more straightforward procedure for aeroelastic analyses. A typical section model of a NACA 0012 airfoil at transonic flow conditions is used as a test case to assess the correctness and accuracy of the proposed formulation. The present results are compared with data obtained from continuous-time state-space formulations and through the direct integration of the aerodynamic and structural dynamic equations. (AU)

• Processo FAPESP: 04/11200-1 - Uma metodologia para análise aeroelástica utilizando modelos de ordem reduzida
• Beneficiário: Alexandre Noll Marques
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 04/16064-9 - Mecânica dos fluídos não estacionária: aplicações em aeronáutica e em reologia
• Beneficiário: José Alberto Cuminato
• Modalidade de apoio: Auxílio à Pesquisa - Temático