Inventory Shaft and Propeller of Traditional Vessels in Gresik-East Java

Abstract

Based on the map, parts of Gresik were known as coastal area. Condition of traditional vessel in development and application propulsion systems still use previous vessels as a references. Traditional vessel should follows Indonesia Classification Bureau (Biro Klasifikasi Indonesia or BKI) guidance, however Gresik traditional vessels hasn’t fulfill the BKI guidance. Hence, in this research aim to inventory shaft and propeller of traditional vessel and to calculate according the BKI. The research method is collect literature review, collect vessel data and calculate it according guidance. This research was carried out on vessel data collection in three sub-districts, namely Panceng sub-district, Ujung Pangkah sub-istrict and Gresik sub-district. There are 3 results in this research, the first one is minimum shaft diameter (Ds) which weren’t fulfill BKI guidance is Panceng Sub-district with 20% of 10 vessels. Second results is maximum bearings distance which weren’t fulfill BKI guidance is Panceng Sub-district with 40% of 10 vessels. And the last is all sub-district has fulfill minimum thickness 0,25 propeller radius (t0,25R ). Based on the results, importance applying BKI guidance should be introduced for owner or crew of gresik traditional vessels.

Feasibility analysis of the conversion of brushed to brushless direct current motor

“…Meanwhile, the occurrence frequency of impact load is presumed relatively small, and for that consideration, the torque correction factor is taken as Kt=1.5. The minimum shaft diameter ds is calculated with (10) [30]:…”