Unjuk Kerja Low Pressure Compressor ( LPC ) dan Specific Fuel Comsumption ( SFC )Mesin Turbo Jet Spey MK555 - 15H

Abstract

The first of the whole process in this engine ( Turbo jet Spey MK555-15H )is the action of Los Pressure Compressor ( LPC). Low Pressure Compressor is axial compressor with axial flowing. LPC is moved by gas turbine shaft which is moved by high energy of internal combustion in combustion chamber. If LPC can not supply the standard pressure of air so the internal combustion process will disturb and will be turned down the power of gas turbine. Bas on this reason, this research would like to know the effective rotation ( rpm ) to produce the influence of out put pressure LPC and specific ( SFC ) in order to give the high efficiency and high performance of this engine. The result of this research indicated that the increasing of rotation will cause increasing the output pressure and pressure ratio. The above of 6951 rpm, the increasing of pressure ratio and the output pressure is slowly. Low rotation will need high SFC, after the above of 5089 rpm will give indication that SFC is stability on low SFC. So this engine will give high efficiency and high performance in high rotation condition up to 8532 rpm