ANALISIS OPTIMALISASI NILAI THRUST, TORQUE DAN EFFICIENCY PROPELLER B SERIES DAN KAPLAN SERIES PADA STUDI KASUS KAPAL PENCALANG 15 GT MENGGUNAKAN METODE CFD

Abstract

Pencalang is a traditional sailing ship used as a merchant ship. Along with the times,
Pencalang changed its function to become a patrol boat with the addition of a motor as its driving
force. In the traditional wooden ship revitalization project, propeller selection is important because the
ship uses a sail and motor system. This research analyzes the use of Kaplan propeller types to optimize
thrust, torque, and efficiency where currently the propeller used for Pencalang ships is type B-series.
The selection of the Kaplan propeller to be analyzed is based on the diameter that matches the
availability of propeller space on the propeller ship or < Dpropeller B-series g. The selection of kaplan
propellers resulted in kaplan types K4-55 and K4-70 with diameters of 0.659 and 0.619, respectively.
The B-series and kaplan series propellers that have been selected are then analyzed using modeling
software and simulation software that has calculated its error using MAPE with the result of an error
< 10%. The simulation results in the software show that the Kaplan series propeller can be used as an
option for the type of propeller that can be used on Pencalang if a propeller replacement will be carried
out later, because with a smaller diameter compared to the B-series propeller it will produce greater
thrust and torque. The Kaplan series propeller that produces the highest thrust and torque is K4-70
with a maximum thrust value of 6966.76 N and a maximum torque of 978.977 Nm.