variavel0=<b>Cleverson Bringhenti</b> - cleverso@mec.ita.cta.br Instituto Tecnológico de Aeronáutica
<b>João Roberto Barbosa</b> - barbosa@mec.ita.cta.br Instituto Tecnológico de Aeronáutica
<b>Abstract.</b> The Brazilian electrical power generation market will move towards the use of gas turbine as prime movers, running on natural gas. The industrial gas turbines presently available in the market are of fixed turbine geometry. To cope with varying load, several options for the turbine efficiency improvement are available, among then the variable-area nozzle guide vanes. To predict off-design performance characteristics and nozzle angle schedules that result in maximal settings, it has been studied the adaptation of variable nozzle guide vanes to the engine LM6000. This paper reports the engine new characteristics in comparison with the production bare engine.
<b>Keywords.</b> Gas Turbine, Turbine, Performance, Variable Geometry.