Garuda - Garba Rujukan Digital

Maritime Asymmetric Warfare in Archipelagic States; The Indonesian Phenomena Dwicahyono, Taufik; Octavian, Amarulla; Bura, Romie Oktavianus; Hendrantoro, Gamantyo; Widodo, Pujo
Journal of Strategic and Global Studies
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Defending sovereignty within an island nation is relatively more complex than doing so for a continental state. The number of scattered islands makes straits and seas more penetrable, vulnerable points and targets of asymmetric threats at sea. The aim of this research is to illustrate threats at sea and provide solutions in guarding and monitoring Indonesian coastal borders, which currently require more ships and radar technology as well as other sensing equipment due to longer beaches. The results reveal that firstly, potential asymmetrical threats at sea include former WWII mines, underwater fibre cables, and nuclear submarines belonging to foreign countries such as America, Russia and China. Secondly, problems related to welfare include theft of natural resources like coral reefs and fish, and drug smuggling activities, all which add to the burden and duties of various parties. Thirdly, asymmetrical Narcoterrorism is very prominent in Colombia where drugs from Cannabis plants are sold to buy weapons. This is also happening in the Philippines and in Aceh, Indonesia. Narcotic activities are also increasingly worrying – particularly their effects on younger generations. Lastly, coordination by affiliated parties that help guard the sea is highly expected. Adequate maritime border patrol management must be carried out so that together, different marine security institutions can maintain the sovereignty of the state. Therefore, the following are recommended: a) regional diplomatic cooperation within ASEAN, b) ensuring of military capability, power, and readiness for placement, and c) the utilization of unmanned technology to aid in securing the archipelagic state.

NATIONAL DEFENSE MODEL BASED ON DATA SOVEREIGNTY: STRATEGY TO OVERCOME THREATS IN DIGITAL ERA martharaharja, januar arief; bura, romie oktovianus
Sinergi : Jurnal Ilmiah Ilmu Manajemen Vol. 11 No. 1 (2021)
Publisher : Economic and Bussiness Faculty, Dr Soetomo University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (224.23 KB)

ABSTRACTÂ Threats to national defense and security always develop along with technological advancements. The threat does not only come from the real world which involves physical attacks, but can also come from cyberspace in the form of attacks on the security of state data. The purpose of this research is to develop a national defense model based on the concept of data sovereignty to overcome various threats that come from the digital world. The type of this research is descriptive qualitative with research data in the form of secondary data collected using literature studies and analyzed using qualitative techniques. The model of national defense based on data sovereignty illustrates the components needed to shape national defense. These components consist of policy, institutional, law enforcement, and various other components that contribute to building data sovereignty.Â Keywords: Data Sovereignty, National Defense and Security, Digital Era, Cyber Threats

Maritime Asymmetric Warfare in Archipelagic States; The Indonesian Phenomena Dwicahyono, Taufik; Octavian, Amarulla; Bura, Romie Oktavianus; Hendrantoro, Gamantyo; Widodo, Pujo
Journal of Strategic and Global Studies
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Defending sovereignty within an island nation is relatively more complex than doing so for a continental state. The number of scattered islands makes straits and seas more penetrable, vulnerable points and targets of asymmetric threats at sea. The aim of this research is to illustrate threats at sea and provide solutions in guarding and monitoring Indonesian coastal borders, which currently require more ships and radar technology as well as other sensing equipment due to longer beaches. The results reveal that firstly, potential asymmetrical threats at sea include former WWII mines, underwater fibre cables, and nuclear submarines belonging to foreign countries such as America, Russia and China. Secondly, problems related to welfare include theft of natural resources like coral reefs and fish, and drug smuggling activities, all which add to the burden and duties of various parties. Thirdly, asymmetrical Narcoterrorism is very prominent in Colombia where drugs from Cannabis plants are sold to buy weapons. This is also happening in the Philippines and in Aceh, Indonesia. Narcotic activities are also increasingly worrying – particularly their effects on younger generations. Lastly, coordination by affiliated parties that help guard the sea is highly expected. Adequate maritime border patrol management must be carried out so that together, different marine security institutions can maintain the sovereignty of the state. Therefore, the following are recommended: a) regional diplomatic cooperation within ASEAN, b) ensuring of military capability, power, and readiness for placement, and c) the utilization of unmanned technology to aid in securing the archipelagic state.

Analysis of the Infuence of Sewaco, Platforms and Bases on the Operational Capability of Submarines Haryanto A.R, Timbul; Octavian, A.; Bura, Romie O.
Budapest International Research and Critics Institute (BIRCI-Journal): Humanities and Social Sciences Vol 4, No 4 (2021): Budapest International Research and Critics Institute November
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birci.v4i4.3367

Indonesia is an archipelagic country whose territory lies in a cross position between two continents and two oceans. The position of the centre of gravity owned by Indonesia makes the security level decrease to threaten Indonesia's sovereignty. The increasing escalation in the South China Sea area, marked by many manoeuvres of foreign warships from significant countries, does not rule out the possibility that submarines from foreign countries will participate in showing their war power. Faced with the vulnerabilities in Indonesia's territorial waters and the quantity of ownership of existing warships, especially submarines, it is necessary to research them. The hypothesis in this study is that if the capability of the rental co, platform and base increases, it will increase the operational capability of the submarine. The methodology used is descriptive quantitative using SPSS 25 software and Microsoft Excel 2013 with multivariate correlation data analysis techniques. The influence of the rental co, platform and base on the operational capability of the submarine is 59.8%. So that several factors that affect the submarine's ability to carry out operations are the rental co, platforms, and base facilities owned. These factors must be improved to carry out everyday operational tasks continuously.

STRATEGI PENINGKATAN DAYA SAING INDUSTRI PERKAPALAN ( SHIPBUILDING INDUSTRY) Aziz Ikhsan Bachtiar; Marimin Marimin; Luky Adrianto; Romie Oktovianus Bura
Jurnal Aplikasi Bisnis dan Manajemen (JABM) Vol. 7 No. 1 (2021): JABM Vol. 7 No. 1, Januari 2021
Publisher : School of Business, Bogor Agricultural University (SB-IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17358/jabm.7.1.121

The shipping industry is one of the industries that can advance global economic integration. Currently, the commercial shipbuilding sector is dominated by China, Japan, Korea, and European countries. The domestic shipping supporting industry has not met all the needs of domestic ships, both warships and commercial ships, and ships used for domestic shipping are almost entirely purchases of used vessels from abroad because they are cheap. In contrast, the contribution of the domestic industry only accounts for less than 10%. This research aimed to formulate a development strategy for the shipping industry by increasing competitiveness to support maritime policies and fulfill the needs of the TNI's Alutsista. This study used the Analytical Network Process (ANP) method. The results showed that the priority strategies that could be implemented comprise seven clusters: Supporting industries (share technology development), core industries (technological capabilities), engineering specifications and designs (idea), feasibility studies (technological readiness), research and development (technological innovation), factor conditions (human resources), and government (long-term program). There are different priority strategies in each cluster. Keywords: analytical network process (anp), competitiveness, shipbuilding industry

PERANCANGAN DAN ANALISIS INTEGRASI HYPERSONIC WAVERIDER–INLET SCRAMJET (DESIGN AND ANALYSIS OF HYPERSONIC WAVERIDER– SCRAMJET INLET INTEGRATION) Deden Ridwan Malik; Romie Oktovianus Bura
Jurnal Teknologi Dirgantara Vol. 12 No. 1 Juni 2014
Publisher : National Institute of Aeronautics and Space - LAPAN

Show Abstract | Download Original | Original Source | Check in Google Scholar

Hingga saat ini, sudah banyak desain wahana hipersonik yang telah hadir dan waverider adalah salah satunya. Waverider telah diperkenalkan lebih dari 50 tahun namun hanya beberapa wahana yang pernah diterbangkan. Ini disebabkan oleh beberapa kesulitan dalam proses perancangan dan integrasi sistem propulsi. Penelitian ini dilakukan dengan mendesain general wedge-derived waverider dan diintegrasikan dengan inlet scramjet. Proses desain waverider ini berdasarkan pada analisis aliran satu dimensi, sementara integrasi inlet scramjet berdasarkan pada analisis exergy. Melalui investigasi ini, suatu variabel desain – laju penghancuran exergy (EDR) – dapat diperoleh untuk mengkorelasikan desain waverider dengan integrasi inlet scramjetKata kunci: General wedge-derived waverider, Inlet scramjet, Laju penghancuran exergy, Perancangan dan integrasi

DESAIN DAN PENGUJIAN INTAKE KONIKAL SISTEM PROPULSI RAMJET PADA KECEPATAN SUPERSONIK (DESIGN AND TEST OF CONICAL INTAKE OF RAMJET PROPULSION SYSTEM AT SUPERSONIC SPEED) - Sofyan; Romie Oktovianus Bura
Jurnal Teknologi Dirgantara Vol.13 No. 1 Juni 2015
Publisher : National Institute of Aeronautics and Space - LAPAN

Show Abstract | Download Original | Original Source | Check in Google Scholar

Riset ini bertujuan untuk mendesain intake supersonik untuk aplikasi sistem propulsi ramjet. Desain intake ramjet sangat penting bagi proses pembakaran dalam ruang bakar mesin ramjet. Dalam desain intake konikal ini, kondisi Mach 2 dijadikan sebagai acuan, dengan kompresi eksternal. Penelitian ini juga menguji intake ramjet dalam terowongan angin supersonik. Desain dilakukan dengan menempatkan gelombang kejut pada bibir cowl intake untuk memperoleh pressure recovery yang tinggi dan gaya hambat serendah mungkin. Hasil desain analitik dibandingkan dengan hasil numerik pada berbagai kondisi intake – subkritikal, kritikal, dan superkritikal. Hasil numerik juga divalidasi dengan eksperimen model. Intake yang didesain memberi pressure recovery sebesar 0,93, namun hasil ini cukup berbeda dengan hasil eksperimental. Ini disebabkan karena efisiensi kompresi tidak diikutkan dalam proses desain.Kata kunci: Intake supersonik, Ramjet, Pressure recovery, Rasio laju massa

DESAIN NOSEL ROKET CAIR RCX250 MENGGUNAKAN METODE PARABOLIK DENGAN MODIFIKASI SUDUT EKSPANSI Eko Priamadi; Arif Nur Hakim; Romie O. Bura
Jurnal Teknologi Dirgantara Vol 9, No. 1 Juni (2011)
Publisher : National Institute of Aeronautics and Space - LAPAN

Show Abstract | Download Original | Original Source | Check in Google Scholar

The present research is conducted to design the optimum nozzles for RCX250 engine, that is designed to produce maximum thrust of 250 kgf with combination of LOX and Kerosene as its propellant. The new nozzles were determined to be parabolic nozzle, with conical nozzle as its comparison. The parabolic nozzle was designed using Thrust Optimized Parabolic (TOP) method invented by G.V.R.Rao. TOP nozzle design method is performed by approximating a Thrust Optimized Contoured (TOC) Nozzle using parabolic equation. The method would result more efficient nozzle than conical or ideal bell nozzle. Further, the parabolic nozzle were modified in its initial and exit angle to create uniform velocities distribution at nozzle exit. A Computational Fluid Dynamics Method (CFD) is used to simulate the nozzle designs. The simulation was carried out in axis-symmetric condition using commercial CFD software. The simulation results show that MOD 1 nozzle, with initial angle (θN) 26 deg and exit angle (θe) 12 deg, gives maximum thrust, which is 4.67 % higher than reference conical nozzle. Key words:Liquid rocket, Parabolic nozzle, Thrust, CFD

Design of Inward-Turning External Compression Supersonic Inlet for Supersonic Transport Aircraft Muhammad Adnan Utomo; Romie Oktavianus Bura
INSIST Vol 2, No 2 (2017)
Publisher : Universitas Lampung

Inward-turning external compression intake is one of the hybrid intakes that employs both external and internal compression intakes principle. This intake is commonly developed for hypersonic flight due to its efficiency and utilizing fewer shockwaves that generate heat. Since this intake employ less shockwaves, this design can be applied for low supersonic (Mach 1.4 - 2.5) intakes to reduce noise generated from the shockwaves while maintaining the efficiency. Other than developing the design method, a tool is written in MATLAB language to generate the intake shape automatically based on the desired design requirement. To investigate the intake design tool code and the performance of the generated intake shape, some CFD simulation were performed. The intake design tool code can be validated by comparing the shockwave location and the air properties in every intake's stations. The performance parameters that being observed are the intake efficiency, flow distortion level at the engine face, and the noise level generated by the shockwaves. The design tool written in MATLAB is working as intended. Two dimensional axisymmetric CFD simulations validation has been done and the design meets the minimum requirement. As for the 3D inlet geometry, with a little modification on diffuser and equipping vent to release the buildup pressure, the inlet has been successfully met the military standard on inlet performance (MIL-E-5007D). This design method also has feature to fit every possible throat cross sectional shapes and has been proven to work as designed.Keywords— Inward-turning, Supersonic, Engine Intakes, Low- noise, Design Method

Development of Optimization Methodology for Short Range Air-to-Air Missile Romie Oktovianus Bura; Yudki Utama; Muhammad Farraz
INSIST Vol 3, No 1 (2018)
Publisher : Universitas Lampung

This paper illustrates the development and the use of conceptual sizing tools integrated with optimization tools. The conceptual sizing tool is based on empirical and simple analytical calculation that simple and robust enough for wide range of inputs. The genetic algorithm optimization method then used to explore the global optimum for given variables. System response analysis is conducted to gain insight about the sensitivity of objective function because of design variables.

Title

Found 24 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 24 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 24 Documents
Search