Kusuma, Cahya (2022) Aplikasi Teori Lifting Line Berbasis Propeller Series Dalam Mendesain Propeller Kapal Patroli. Doctoral thesis, Institut Teknologi Sepuluh Nopember.
![[thumbnail of Disertasi]](http://repository.its.ac.id/style/images/fileicons/text.png) |
Text (Disertasi)
Disertasi Cahya Kusuma NRP. 04211860012001.pdf - Accepted Version Restricted to Repository staff only until 1 April 2024. Download (9MB) | Request a copy |
Abstract
Kapal Cepat Rudal 60 meter atau KCR 60 berfungsi sebagai kapal cepat sekaligus sebagai
kapal patroli, dengan displacement 467T draft 2,6m dengan daya mesin 2880Kw
menggunakan custom propeller didesain mampu mencapai kecepatan maksimal 23 knot.
Penelitian ini melakukan 4 usulan inovatif peningkatan kecepatan kapal. Inovasi pertama
membuat program numerik berbasis MatLab untuk mendesain propeller berbasis series yaitu
B series atau Gawn series untuk mendapatkan effisiensi terbaik sesuai dengan kecepatan
desainnya. Inovasi yang kedua adalah membuat program numerik berbasis MatLab untuk
mendapatkan nilai induced velocity di depan propeller baik kearah tangensial(UT) maupun
kearah Axial(UA). Nilai induced velocity ini penting untuk pengembangan penelitian
berikutnya terutama penambahan device didepan propeller untuk menambah thrust, dan
penghematan energi yang terbuang (energy saving device). Inovasi yang ketiga adalah
memodifikasi propeller terbaik yang didapatkan program numerik berbasis MatLab.
Modifikasi dilakukan dari tengah chord length sampai trailing edge dengan tujuan
menambah thrust dan mengurangi singing. Model hasil modifikasi dilakukan pengujian
dengan open water test sehingga didapatkan nilai thrust dan torsi yang diharapkan lebih baik
sebagai propulsor kapal. Inovasi yang keempat adalah redesain haluan kapal dari
konvensional bow menjadi axe bow menggunakan software Marine Maxsurf Resistance V8i
dengan tujuan mengurangi IE(angle of entrance) sehingga diharapkan mengurangi tahanan
kapal. Inovasi pertama dengan menggunakan optimasi metode regresi polinomial dan
MatLab program berdasarkan data tahanan pengujian model yang dilakukan Balai Teknologi
Hidrodinamika BRIN didapatkan propeller paling optimal adalah B series, dan kapal mampu
mencapai kecepatan 24,2 knot dengan propeller B5-105 P/D 1,05 dengan effisiensi 64,19%.
Inovasi kedua berdasarkan data tahanan pengujian model dan propeller terbaik pada inovasi
pertama yaitu B5-105 P/D 1,105 nilai rata rata induced velocity ke arah tangensial (UT)
adalah 4,949 m/dt dan nilai induced velocity ke arah axial (UA)adalah 7,939 m/dt. Inovasi
ketiga dengan modifikasi propeller B5-105 P/D 1,1 dengan menambahkan thickness dari
tengah chord length sampai trailing edge mampu meningkatkan effisiensi sebesar 2,384%
dan mampu meningkatkan kecepatan kapal menjadi 24,5 knot. Saat Sea Trial kapal mampu
mencapai kecepatan maksimal 23,5 knot. Inovasi keempat dengan modifikasi desain bow
dari konvensional bow menjadi axe bow dengan menggunakan software marine Maxsurf
Resistance V8i mampu menurunkan tahanan sebesar 9,588 kN atau 2,653%. Berdasarkan
data tahanan menggunakan Maxsurf Resisitance V8i, penggunaan propeller B series mampu
meningkatkan kecepatan kapal dari 23,5knots menjadi 24,2knots atau sebesar 3,04%.
======================================================================================================
The 60 meter fast missile boat or KCR 60 functions as a missile fast boat as well as a patrol
boat, with a displacement of 467T draft 2.6m with an engine power of 2880Kw using a
custom propeller designed to reach a maximum speed of 23 knots. This study carried out 4
innovative proposals to increase ship speed. The first innovation is to create a MatLab-based
numerical program based on resistance data from model testing conducted by the BRIN
Hydrodynamic Technology Center for designing series-based propellers, namely the B
series or Gawn series to get the best efficiency according to the design speed. The second
innovation is to create a MatLab-based numerical program to get the value of the induced
velocity in front of the propeller in either tangential (UT) or axial (UA) directions. This
induced velocity value is important for the development of further research, especially the
addition of a device in front of the propeller to increase thrust, and save wasted energy
(energy saving device). The third innovation is to modify the best propeller obtained by the
MatLab-based numerical program. Modifications are made from the middle of the chord
length to the trailing edge in order to increase thrust and reduce singing. The modified model
was tested using an open water test so that the expected thrust and torque values were better
as a ship's propulsor. The fourth innovation is the redesign of the ship's bow from a
conventional bow to an ax bow using Marine Maxsurf Resistance V8i software with the aim
of reducing IE (angle of entrance) so that it is expected to reduce ship resistance. The first
innovation using the optimization of the polynomial regression method and the MatLab
program based on model test resistance data, the most optimal propeller was B series, and
the ship was able to reach a speed of 24.2 knots with a B5-105 P/D propeller of 1.05 with
an efficiency of 64.19%. The second innovation is based on the model resistance data and
the best propeller in the first innovation, namely B5-105 P/D 1.105, the average value of the
induced velocity in the tangential direction (UT) is 4.949 m/s and the value of the induced
velocity in the axial direction(UA) is 7.939 m/s. The third innovation is the modification of
the B5-105 P/D 1.1 propeller by adding thickness from the middle of the chord length to the
trailing edge, which can increase efficiency by 2.384% and increase the speed of the ship to
24.5 knots. During the Sea Trial, the ship was able to reach a maximum speed of 23.5 knots.
The fourth innovation by modifying the bow design from a conventional bow to an ax bow
using the marine software Maxsurf Resistance V8i is able to reduce resistance by 9.588 kN
or 2.653%. Based on resistance data using Maxsurf Resistance V8i, the use of B series
propellers can increase the speed of the ship from 23.5knots to 24.2knots or by 3.04%.
| Item Type: | Thesis (Doctoral) |
|---|---|
| Uncontrolled Keywords: | B series, Gawn series, KCR 60m, Lifting line, MatLab program, |
| Subjects: | V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM753 Propellers |
| Divisions: | Faculty of Marine Technology (MARTECH) > Marine Engineering > 36001-(S3) PhD Theses |
| Depositing User: | Cahya Kusuma |
| Date Deposited: | 02 Mar 2022 08:07 |
| Last Modified: | 02 Mar 2022 08:07 |
| URI: | http://repository.its.ac.id/id/eprint/94073 |
Actions (login required)
 |
View Item |