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All Journal Jurnal JEETech Journal La Multiapp Journal of International Multidisciplinary Research
Farhan Rezki Arifin
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Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Other

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Analisis Dampak Kegagalan Sistem Kelistrikan Pada Penerbangan Pesawat Udara Tipe Boeing 737-800/900 Rahmat hidayat; Andi Dwi Purnama Soswaty; Farhan Rezki Arifin
Journal of International Multidisciplinary Research Vol. 2 No. 9 (2024): September 2024
Publisher : PT. Banjarese Pacific Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62504/jimr895

Abstract

Pesawat terbang adalah moda transportasi tercepat dengan jangkauan hingga antar benua, menjadikannya pilihan utama untuk perjalanan jarak jauh. Meskipun peluang kecelakaan pesawat sangat kecil, yaitu rata-rata 4 kali dalam 1 juta jam terbang dampaknya sangat fatal bagi penumpang, dengan peluang selamat hanya 24% Penyebab utama kecelakaan pesawat umumnya berasal dari tiga faktor: teknis, cuaca, dan kesalahan manusia (human error). Perawatan pesawat dilakukan secara rutin (scheduled maintenance) dan non-rutin (non-scheduled maintenance) berdasarkan interval waktu yang telah ditentukan. Ada berbagai sumber daya yang digunakan untuk sistem kelistrikan pesawat, termasuk generator mesin, unit daya tambahan (APU), daya eksternal, dan udara ram turbin. Penelitian ini bertujuan untuk mengukur tingkat bahaya dalam kondisi penerbangan saat terjadi gangguan pada sistem kelistrikan, mengevaluasi pengaruh performa pesawat terhadap keandalan sistem kelistrikan, serta menilai peran kemajuan teknologi pembangkit listrik terhadap keselamatan penerbangan. Penelitian dilakukan di Hanggar Batam Aero Teknik, Kecamatan Nongsa, Kota Batam, dengan menggunakan metode analisis data kualitatif. Hasil penelitian menunjukkan bahwa kegagalan sistem kelistrikan pada pesawat meliputi kegagalan pada sistem pembangkit dan distribusi. Terdapat komponen dalam sistem distribusi yang, jika rusak, dapat menyebabkan kegagalan kelistrikan yang signifikan. Sistem pembangkit listrik pada pesawat saling mendukung, sehingga perawatan komponen kelistrikan harus dilakukan tepat waktu dan sebaik mungkin.
Performance Analysis of Building-Embedded Loop Antenna Systems for Smart City IoT Networks Rezki Arifin, Farhan; Zain, Nurmayanti; Ramos Emakarim, Lompo
Jurnal JEETech Vol. 6 No. 2 (2025): Nomor 2 November
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32492/jeetech.v6i2.6207

Abstract

The increasing demand for seamless connectivity in Smart City environments has encouraged the integration of communication systems directly within building infrastructures. This study presents the performance analysis of a building-embedded loop antenna system designed for sub-GHz Internet of Things (IoT) applications. The proposed antenna, made of stainless steel and embedded in a reinforced concrete column, was modeled and simulated using Ansys HFSS (High Frequency Structure Simulator) based on the Finite Element Method (FEM). Analytical and full-wave simulations were conducted to evaluate key electromagnetic parameters, including return loss, voltage standing wave ratio (VSWR), impedance bandwidth, and radiation characteristics. The results showed that the antenna achieved resonance at 700 MHz with a return loss of –20.95 dB and a VSWR of 1.196, demonstrating excellent impedance matching. The impedance bandwidth covered 563–939 MHz, ensuring compatibility with various IoT protocols such as LoRaWAN, NB-IoT, Z-Wave, and ZigBee. Despite reduced gain due to dielectric absorption and coupling within the concrete medium, the antenna maintained an omnidirectional radiation pattern, suitable for low-power IoT nodes. These findings indicate that building-embedded loop antennas can function as integrated communication elements while preserving architectural integrity.
Transforming Building Infrastructure into Communication Systems for Smart City: A Conceptual Analysis of Metallic Structures as Antennas Zain, Nurmayanti; Arifin, Farhan Rezki; Emakarim, Lompo Ramos
Journal La Multiapp Vol. 6 No. 6 (2025): Journal La Multiapp
Publisher : Newinera Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37899/journallamultiapp.v6i6.2431

Abstract

The transformation of building infrastructure into intelligent communication systems is a key enabler of smart city development. This paper investigates the feasibility of utilizing metallic structural elements such as steel reinforcement bars, hollow sections, and galvanized steel as embedded antenna within building frameworks. To provide validated evidence, this work incorporates full-wave electromagnetic simulations using Ansys HFSS to analyze resonance behavior, impedance matching, radiation patterns, and gain performance in the sub-GHz band, particularly around 700 MHz for IoT applications. The simulation results demonstrate that selected building materials can achieve stable resonance and nearly omnidirectional radiation characteristics, with realized gains up to 0.47 dBi and bandwidths sufficient for LPWAN technologies such as NB-IoT and LoRaWAN. These findings confirm the dual functionality of structural metals, offering both mechanical strength and communication capability. The study provides a validated basis for future experimental prototyping and integration of antenna- embedded infrastructures in smart building environments.
Co-Authors Andi Dwi Purnama Soswaty Emakarim, Lompo Ramos Nurmayanti Zain Rahmat Hidayat