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All Journal JURNAL SAINS DAN TEKNOLOGI INDONESIA Warta Penelitian Perhubungan
Jamaludin, Andi
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Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Engineering Environmental Science Transportation

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UJI TARIK HIDRODINAMIKMODEL KAPAL BERSAYAP WiSE DENGAN LAMBUNG DASAR BERSTEP Iskendar, Iskendar; Jamaludin, Andi; Indiyono, Paulus
Jurnal Sains dan Teknologi Indonesia Vol. 12 No. 3 (2010)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (360.247 KB) | DOI: 10.29122/jsti.v12i3.860

Abstract

This paper describes hydrodynamic model tests of Wing in Surface Effect (WiSE) Craft. These craft was fitted with stephull form in different location on longitudinal flat bottom (stepedhull planning craft) to determine the influences of sticking and porpoising motion performances. These motions are usually occured when the craft start to take-off from water surfaces. The test models with scale of 1 : 7 were comprised of 4 (four) stephull models and 1 (one) non-stephull model as a comparative study. The hydrodynamic tests were performed with craft speed of 16 – 32 knots (prototype values) in Towing Tank at UPT. Balai Pengkajian dan Penelitian Hidrodinamika (BPPH), BPPT, Surabaya. The resistance (drag) was measured by dynamo meter and the trim of model (draft changing at fore and aft of model due to model speed) was measured by trim meter. By knowing the value of model trim, the wetted surface area can be determined. Then, the lift forces were calculated based on these measured values. The model test results were presented on tables and curves. Test results show that models with step located far away from center of gravity of the WiSE craft tend to porpoising and sticking condition, except if the step location on the below of these center of gravity. While model without step tends to sticking conditions.
Analisa dan Evaluasi Faktor-Faktor Yang Mempengaruhi Karakteristik Olah-Gerak (MANEUVER) Kapal Jamaludin, Andi; Samudro, Samudro
Warta Penelitian Perhubungan Vol. 23 No. 1 (2011): Warta Penelitian Perhubungan
Publisher : Sekretariat Badan Penelitian dan Pengembangan Perhubungan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1406.792 KB) | DOI: 10.25104/warlit.v23i1.1048

Abstract

The past decade has witnessed a rapid grawth of interest in the development of fast catamaran for various applications. The paper describes the study of interference resistance components on demihull separation. Catamarans or twin-hull vessels may be formed either by connecting two symmetrical demihulls or by splitting a mono hull into two halves to form two asymmetric demihulls. The slenderbody method in Hull Speed- Maxsurf Program was used for predicting the resistance components. The method assumes that the ship's beam is small compared to its length. Effect of resistance interference components on catamaran hull separations are explained and discussed with some work from other published data, which shows good agreement.Keywords : Turning circle, zig-zag, ship, trim, speed.
Co-Authors Iskendar Iskendar Paulus Indiyono Samudro, Samudro