Analisis Karakteristik Dan Engine Propeller Matching Pada Propeller DTMB 4119 Dengan Variasi Jumlah Blade Pada Kapal Combatant 142 Meter

Abstract

Maritime security issues in the 21st century require a DTMB (David Taylor Model Basin) 5415
combatant ship with complex armament, high speed and efficiency. minimizing energy consumption while
generating appropriate power within the warship's desired speed range. Propellers are a major component in
warship design. The DTMB 4119 Propeller is selected as a modern type of Propeller because of its suitability
for high-speed and high-efficiency ships. This study analyzes thrust, torque, and efficiency with variations in the
number of blades. by using modeling software and Computational Fluid Dynamic (CFD) simulation software.
Propeller comparison on variations of 3, 4 and 5 blades, to get propeller recommendations with the best results
then look for Engine selection and calculate Engine Propeller Matching (EPM). Simulation results, the
increasing number of blades with the same area, the greatest thrust and torque values are generated, namely
2302509.3 N and 2633061.6 Nm on 5 blades at J 0.83. Then, the greater the thrust or torque value, the better
the propeller performance. For efficiency, the largest value is at 3 blades J 0.83 of 0.735. Then, the greater the
thrust or torque value, the better the propeller performance. For efficiency, the largest value is at 3 blades J
0.83 of 0.735. in 4 engines selected with Twin screw 2 engines for speedan 18 kN patrol and 2 engines for a
maximum speed of 27 kN.