[1] Univ Sao Paulo, Sao Carlos Sch Engn, Aeronaut Engn Dept, Sao Carlos, Brazil
[2] Univ Fed Rio Grande do Sul, PPGE3M, Porto Alegre, Brazil
[3] Univ Porto, Fac Engn, Mech Engn Dept, Porto, Portugal
[4] LAETA, UMAI INEGI, Porto, Portugal
[5] Univ Sao Paulo, Sao Carlos Sch Engn, Aeronaut Engn Dept, Av Joao Dagnone 1100, BR-13573120 Sao Carlos, Brazil