Biomimetics Design Optimization and Drag Reduction Analysis for Indonesia N219 Seaplanes Catamaran Float

Allessandro Utomo,Yanuar Yanuar,Gunawan Gunawan

doi:10.3390/pr9112024

Abstract

Design optimization on the Indonesia N219 seaplane catamaran is necessary to provide better service to rural islands of Indonesia. This research aims at decreasing drag using a design based on biomimicry by imitating the hydrodynamic characteristics of sailfish (Istiophorus platypterus) for pontoon floats. The design is then validated using a numerical fluid test using ANSYS Fluent to see the reduction in drag due to the change from a conventional or Wipeline® 13000 design to a biomimetics adaptation design. Next, further optimization was carried out based on the adaptation design based on trim tests, clearance tests, and deadrise angle dimensions suitable for biomimicry designs at Froude number speeds of 0.4 to 0.7. The design results with the adaptation of biomimicry show that a change in the design with this optimization affects a drag reduction that reaches 30% of the total drag generated by the conventional design.

Highlights

Analysis for Indonesia N219Geographically, Indonesia is an archipelagic country with a sea area of up to 77% of its total area and 17.504 islands, according to the Ministry for Maritime Affairs and Investment of the Republic of Indonesia
This study aims to determine the effect of hydrodynamic adaptation on changes to the design of the Indonesian N219 seaplane float, a configuration of clearance distances, trim analysis, and analysis of changes to the deadrise angle design of the floating pontoon design adaptation of the catamaran sailfish N219 through the manufacture of the numerical test model
The float design of the seaplane catamaran requires optimization to obtain a small total water resistance value based on the comparison of its hydrodynamic characteristics in terms of changes in adaptation design, adjustment of trim degrees, deadrise angle, and clearance values

Summary

Introduction

Indonesia is an archipelagic country with a sea area of up to 77% of its total area and 17.504 islands, according to the Ministry for Maritime Affairs and Investment of the Republic of Indonesia. These islands consist of four major islands, namely Sumatra, Java, Kalimantan, Sulawesi, Papua, and many other smaller islands. Many areas in Indonesia are challenging to access because waters and various other difficulties separate them To overcome these problems, the government needs transportation facilities that can reach remote areas, especially those difficult to access by land. The flying boat-type seaplane uses an aircraft fuselage that has been designed into a hull as a landing tool

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