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Desain Propeller Kapal Selam 29 meter Dengan Menggunakan Propeller B-Series Kusuma, Cahya; Ariana, I Made
Wave: Jurnal Ilmiah Teknologi Maritim Vol 11, No 1 (2017)
Publisher : Wave: Jurnal Ilmiah Teknologi Maritim

Kapal selam mini 29 meter dengan diameter hull 3 meter dan displacement 130T sangat cocok untuk perairan Indonesia barat yang dangkal karena memiliki beberapa kelebihan. Perhitungan powering terutama tahanan kapal dilakukan dengan menggunakan metode MIT dan metode kapal pembanding untuk mendapatkan koefisien Admiral. Berdasar dari hasil perhitungan kedua metode tersebut dilakukan perancangan propeller. Propeller didesain dengan menggunakan Propeller B series. Penggunaan propeller B-series lebih disebabkan karena kelengkapan data dan informasi performa serie tersebut bila dibandingkan dengan seri propeller lainnya. Dari analisa kebutuhan thrust dan ketersediaan daya mesin, maka propeller B5-60 ternyata layak dipakai sebagai propulsor kapal selam mini 29 m.

DESAIN PROPELLER KAPAL SELAM 29 METER DENGAN MENGGUNAKAN PROPELLER B-SERIES Kusuma, Cahya; Ariana, I Made
Wave: Jurnal Ilmiah Teknologi Maritim Vol 11, No 1 (2017)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Kapal selam mini 29 meter dengan diameter hull 3 meter dan displacement 130T sangat cocok untuk perairan Indonesia barat yang dangkal karena memiliki beberapa kelebihan. Perhitungan powering terutama tahanan kapal dilakukan dengan menggunakan metode MIT dan metode kapal pembanding untuk mendapatkan koefisien Admiral. Berdasar dari hasil perhitungan kedua metode tersebut dilakukan perancangan propeller. Propeller didesain dengan menggunakan Propeller B series. Penggunaan propeller B-series lebih disebabkan karena kelengkapan data dan informasi performa serie tersebut bila dibandingkan dengan seri propeller lainnya. Dari analisa kebutuhan thrust dan ketersediaan daya mesin, maka propeller B5-60 ternyata layak dipakai sebagai propulsor kapal selam mini 29 m.

Tidal current power in Capalulu strait, North Maluku: A feasibility study Kurniawan, Alamsyah; Azmiwinata, Maulvi; Pratama, Munawir Bintang; Kusuma, Cahya
International Journal of Renewable Energy Development Vol 13, No 3 (2024): May 2024
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2024.60132

The Indonesian government has set goals for increasing the use of renewable energy in the coming years. Currently, Indonesia relies heavily on non-renewable energy sources, which poses a threat to the environment due to the country's growing energy needs. This study aims to assess the potential for developing a tidal power plant in Capalulu Strait, North Maluku. Using hydrodynamic modelling, the study identified two potential locations at coordinates 1.877°S – 125.328°E (Capa-2) and 1.863°S – 125.323°E (Capa-4) which were selected for having median current speeds exceeding 1.8 m/s and maximum current speeds exceeding 3.5 m/s. The study tested a hypothetical implementation of KHPS Gen5 instrument(s) by Verdant Power, a 5 m diameter turbine with a rated nominal power of 37 kW and a maximum rated power of 56 kW. A power plant layout was designed to be placed at Capa-2 and Capa-4, each location accommodating 45 turbines. The development of this power plant is estimated to produce up to 22 GWh per year. Financial analysis resulted in a LCOE of IDR 5,930/kWh. However, this price is still high compared to the national electricity tariff of IDR 1,027.70/kWh. Variations in the number of turbines also may not result in a lower LCOE than the national tariff. Nevertheless, the estimated cost of generating electricity is still competitive compared to diesel, which is around IDR 5,804/kWh.

DIMENSIONAL ANALYSIS AND EXPERIMENTAL DESIGN FOR PREDICTING THE CALCULATION OF THE VALUE OF THE TORQUE COEFFICIENT ON PROPELLER B-SERIES, CASE STUDY OF B3-50 AND B5-80 Adietya, Berlian Arswendo; Indiaryanto, Mahendra; S, Sutiyo; Kusuma, Cahya
Journal of Marine-Earth Science and Technology Vol. 3 No. 3 (2022): December
Publisher : Marine & Earth Science and Technology Research Center, DRPM, ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j27745449.v3i3.581

Experimental design is a fairly old method of statistically analyzing an experimental prediction. This is used to replace a fairly old system as well, namely in the form of a trial and error method. Because with this method the response results approach from a study can be predicted statistically. In this study, we will calculate some torque values of a propeller on a displacement ship type. Where the ship's operational displacement ship runs on a Froude number below 0.25, for that the Wageningen B-series propeller type is very suitable for this ship. Furthermore, dimensional analysis is carried out with variables that affect propeller performance and uses multivariate combination calculations. The results of the study show the regression equation between the KQ values of the B-series propeller data and the regression formula with the equation Y = 0.9916x + 0.000835 with the value of R2 being 0.9931. so we try to apply an experimental design method to be validated with the polynomial results of the B-series propeller on blades 3 to 6, so that the statistical method of this experimental design is up-to-date in propulsion design calculations.

NUMERICAL SIMULATIONS OF TURBULENT GAS-SOLID FLOW IN A GRADUAL EXPANSION Indiaryanto, Mahendra; Kusuma, Cahya; Arsad, Roy Mansyah
IJMEA Journal Kedokteran Gigi Vol 1 No 1 (2024): September 2024
Publisher : Department of Marine Engineering, Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/ijmea.v1i1.365

The dwindling availability of petroleum fuels encourages the use of fuel from renewable and environmentally friendly natural resources. This study focused on the iodine value in used biodiesel methyl ester and its effect on the performance of the main components of a diesel motor such as power, torque, brake mean effective pressure (BMEP), and specific fuel oil consumption (SFOC). Numerical research was carried out on the YANMAR TF85-MH engine model using computational fluid dynamics (CFD). The variations used are biodiesel B20, 20A, and 20B at three different engine rotation speeds, 1900 RPM, 2000 RPM, and 2100 RPM. The results show that the performance of biodiesel B20 is better compared to others. It produces 4.01 kW of power, 19.79 N.m of torque, 82065.12 Pa of BMEP, and 270.43 gr/Kwh of SFOC. While the B20A produces 4.61 kW of power, 20.44 N.m of torque, 84067.31 Pa of BMEP, and 288.76 gr/Kwh of SFOC. Then, the B20B produces 4.12 kW of power, 20.57 N.m of torque, 83244 Pa of BMEP, and 316.57 gr/Kwh of SFOC. So, it can be seen that the mixture of biodiesel fuel with iodine slightly affects the increase in diesel motor performance. In addition, the use of renewable energy fuels must be encouraged because their availability is maintained.

EFFECT OF PROPELLER DESIGN ON PROPELLER EFFICIENCY ON CARGO SHIPS Kusuma, Cahya; Indiaryanto, Mahendra
IJMEA Journal Kedokteran Gigi Vol 2 No 1 (2025): March 2025
Publisher : Department of Marine Engineering, Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/ijmea.v2i1.378

This research examines the effect of the use of propellers on propeller performance on cargo ships. Using computational fluid analysis (CFD), the study evaluated the fluid flow around the propeller under two conditions: with and without a propeller. Shows an increase in propeller efficiency of up to 15% at cruising speed with the use of propellers. The implication of these results is the potential application of propeller technology to improve the overall efficiency and performance of cargo ships. Through a combined approach of numerical simulation and experimental testing, we conducted an in-depth analysis of various propeller designs. With factors such as shape, size, angle of attack, and propeller profile in evaluating propeller performance. Empirical data were obtained through trials at a model ship test facility and compared with computer simulation results. The results of this study provide valuable insights for the shipping industry in improving the operational efficiency of cargo ships. These findings can be used by shipping companies and shipbuilders to optimize propeller designs and improve their operational efficiency.

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