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Ahmad Ilham Kamal
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Aerospace Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Environmental Science

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9. UTILIZATION OF THIRD HARMONIC RATIO STATOR GROUND FAULT PROTECTION AND STATOR GROUND FAULT PROTECTION WITH REDUNDANT 20 HZ VOLTAGE INJECTION FOR RELIABLE STATOR GROUNDING PROTECTION ON GENERATOR NEUTRAL SIDE FOR GROUND CONTROL SYSTEM OPERATION APPLICATION Muchammad Furqon Muchaddats; Nur Rahma Dona; Ahmad Ilham Kamal; Kurniawan; Budi Sumartono; Dikatama
Jurnal TNI Angkatan Udara Vol 4 No 1 (2025): Jurnal TNI Angkatan Udara Triwulan Pertama
Publisher : Staf Komunikasi dan Elektronika, TNI Angkatan Udara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62828/jau.v4i1.146

Abstract

This study aims to determine the advantages and disadvantages of using the type of stator grounding fault protection using voltage injection and traditional. As we know there are many types of protection for stator grounding faults on the neutral side of the traditional ones such as neutral overvoltage and using the 3rd harmonic ratio voltage ratio between the generator terminal and the neutral side, this traditional method has some problems in sensitivity, safety and cleaning speed, in the long run can make low-level grounding faults become damaging disturbances. And now we already have the latest method for stator grounding faults, using 20Hz voltage injection which can reduce the problems in the traditional ones. The only problem with 20Hz voltage injection is the voltage injector device, if this device has some problems, then the protection cannot operate. This paper wants to explain the advantages of traditional protection (3rd harmonic ratio stator grounding protection) and stator grounding protection with 20Hz voltage injection installed redundantly, then the stator grounding protection on the neutral side of the generator will be more reliable.
2. INTERPRETASI RECHARGE AIR TANAH DANGKAL KOTA BANDUNG MENGGUNAKAN DATA KONDISI GEOLOGI, KONTURING MUKA AIR TANAH, DAN KIMIA AIR SEBAGAI PERENCANAAN KETAHANAN SUMBER DAYA ALAM: INTERPRETASI RECHARGE AIR TANAH DANGKAL KOTA BANDUNG furqon; Ahmad Ilham Kamal; Kurniawan; Rayhan Kemal; Tia Dikatama Tsania
Jurnal TNI Angkatan Udara Vol 4 No 2 (2025): Jurnal TNI Angkatan Udara Triwulan Kedua
Publisher : Staf Komunikasi dan Elektronika, TNI Angkatan Udara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62828/jpb.v4i2.149

Abstract

Penelitian ini bertujuan untuk mengetahui kondisi Sungai Cikapundungyang merupakan salah satu hulu dari DAS Citarum dimana hulu sungai merupakan daerah recharge untuk siklus hidrologi. Dalam siklus hidrogeologi daerah recharge sangatlah penting karena apabila daerah ini sudah terkontaminasi dengan bahan kimia yang berbahaya maka ekosistem yang berada di aliran sungai dan daerah air tanah yang dipengaruhi akan terganggu. Penelitian ini menggunakan data kondisi Geologi, konturing muka air tanah, dan kimia air sehingga dapat diperkirakan area recharge air tanah dangkal kota Bandung. Dari data geologi diketahui bagaian utara kota Bandung terdapat sesar lembang yang menyababkan aliran air tanah dangkal dari Gunung Tangkubanperahu tidak menerus ke kota Bandung dan dari data peta isofreatik didapati aliran air tanah dangkal kota bandung berasal dari arah Utara dan Timur Laut. Dari data kimia air tanah menunjukkan fasies bikarbonar (CO3-HCO3) yang menandakan perjalanan air tanah masih dekat dengan sumbernya. Dari analisa data-data yang ada didapati daerah recharge air tanah dangkal kota Bandung berasal dari daerah Dago Pakar dan sekitarnya atau Gunung Manglayang. Hal ini bedasarkan kondisi geologi yang tidak memungkinkannya air tanah dari bagian utara sesar lembang, peta Isofreatik yang memperlihatkan arah aliran air tanah kota Bandung berasal dari Utara dan Timur laut, dan kimia air yang menunjukkan fasiaes bikarbonat menandakan tidak jauh dari sumber recharge.
6. INCREASING LARGE-SCALE AGRICULTURAL EFFICIENCYWITH THE DJI AGRAS T25 DRONE: A CASE STUDY IN CILEGON Muchammad Furqon; Ahmad Ilham Kamal; Ferdy Susanto; Muchdatas; Rayhan Kemal; Salsabila
Jurnal TNI Angkatan Udara Vol 5 No 1 (2026): Jurnal TNI Angkatan Udara Triwulan Pertama
Publisher : Staf Komunikasi dan Elektronika, TNI Angkatan Udara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62828/jpb.v5i1.197

Abstract

This study aims to compare the effectiveness of large-scale irrigation of eggplant(Solanum melongena L.) in Ciwandan, Cilegon, using the DJI Agras T25 Drone (as PrecisionAgriculture) and the Conventional Method (using 3 workers and a water pump). The variablesmeasured are time efficiency, labor effi ciency, water efficiency, operational costs, and cropproductivity during one planting season. The results show that the use of drones can save 85%of time and reduce operational labor costs per watering session, with yields that are notstatistically significantly different. The operational efficiency offered by drones makes thismethod superior for the sustainability and profitability of large-scale agriculture
2. ANALYSIS OF ENGINE PYLON STRUCTURAL FAILURE AND ITS IMPACT ON FLIGHT SAFETY:CASE STUDY OF MD-11F (N259UP) Muchammad furqon M; Ahmad Ilham Kamal; Ferdy Sastria; Feti Fatonah; Djoko Herwanto; Desiana Putri; Dikasitama
Jurnal TNI Angkatan Udara Vol 5 No 2 (2026): Jurnal TNI Angkatan Udara Triwulan Kedua
Publisher : Staf Komunikasi dan Elektronika, TNI Angkatan Udara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62828/jpb.v5i2.208

Abstract

This study aims to analyze the catastrophic structural failure experienced bya UPS McDonnell Douglas MD-11F (N259UP) cargo aircraft on November 4, 2025, inLouisville, Kentucky. The investigation focused on the detachment of the number 1 enginedue to engine pylon failure during takeoff. Through metallurgical analysis and a review ofthe NTSB investigation report, fatigue cracking in the forward mount fitting was found to bethe primary cause of the engine detachment. The results revealed gaps in routineinspection methods for aging aircraft. The study concluded that transitioning to StructuralHealth Monitoring technology and fleet modernization are crucial risk mitigation measuresfor the global air cargo industry.
3. AIRPORT EMERGENCY DIESEL PREVENTIVE MAINTENANCE MANAGEMENT USING BATTERY INTERNAL RESISTANCE MONITORING ANALYSIS Ahmad Ilham Kamal; Muchammad Furqon Muchaddats; Feti Fatonah; Djoko Herwanto; Desiana Putri; Sudibyo; Dikasitama
Jurnal TNI Angkatan Udara Vol 5 No 2 (2026): Jurnal TNI Angkatan Udara Triwulan Kedua
Publisher : Staf Komunikasi dan Elektronika, TNI Angkatan Udara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62828/jpb.v5i2.209

Abstract

Emergency diesel generator is a very important system in every industry includingthe airport industry because this system supports the electricity of important equipment whena blackout occurs. in the emergency diesel generator system, there is a battery as a starter forthe diesel engine. if the battery capacity decreases, the diesel generator will not be able tostart the engine, therefore in the emergency diesel generator system, regular batterymaintenance is needed to maintain system reliability. in this journal, preventive maintenanceon the battery will be explained, especially on the emergency diesel generator system battery.one indicator of decreased capacity in the battery is an increase in its internal resistance value.in preventive battery maintenance, analyzing the increase in internal resistance can be areference for replacing a new battery.
4. ECONOMIC ASYMMETRY IN DRONE WARFARE A CASE STUDY OF IRAN'S SHAHED-136 OPERATION AGAINST ISRAEL'S IRON DOME DEFENSE SYSTEM Ahmad Ilham Kamal; Muchammad Furqon Muchaddats; Ferdy Anggrian; Andromeda Yoga Pratama; Riza Suseno; Kurniawan; Dikasitama
Jurnal TNI Angkatan Udara Vol 5 No 2 (2026): Jurnal TNI Angkatan Udara Triwulan Kedua
Publisher : Staf Komunikasi dan Elektronika, TNI Angkatan Udara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62828/jpb.v5i2.210

Abstract

The advent of low-cost loitering munitions has revolutionized modern warfare,creating a profound economic imbalance between offensive and defensive capabilities. In theMiddle East, the deployment of Iran's Shahed-136 drone against Israel's Iron Dome defensesystem serves as a prime example of a "cost-imposing" strategy in asymmetric warfare.Objective: This study aims to quantify the economic disproportion between the production anddeployment costs of the Shahed-136 drone and the operational costs of the Iron Domesystem. It explores how this cost ratio impacts long-term national defense budgets andstrategic sustainability. Methodology: This study uses a qualitative-descriptive approachsupported by comparative economic modelling. Data are synthesized from defense budgetreports, estimates of the Shahed-136 manufacturing costs, and the unit cost of the Iron DomeTamir interceptor missile. The analysis uses the Cost-Exchange Ratio (CER) to evaluate theeconomic efficiency of both sides. Results: The study's findings reveal a sharp economicasymmetry, with a single Shahed-136 estimated to cost between $20,000 and $50,000,depending on configuration, while a single Tamir interceptor missile costs approximately$40,000 to $100,000, depending on configuration. When factoring in "saturation attacks" (ordrone swarms), defense costs increase exponentially, not only through missile expenditurebut also through the economic disruption caused by airstrike warnings and collateralinfrastructure damage if interceptions fail. Conclusion: The study concludes that while IronDome remains tactically effective in saving lives, its current economic trajectory isunsustainable against the threat of low-cost, mass-produced drones. The study suggests thatto maintain strategic stability, the defense framework must transition to lower-cost interceptiontechnologies, such as directed energy weapons (lasers/Iron Beam), to neutralize theeconomic advantage currently held by offensive drone platforms.
Co-Authors Andromeda Yoga Pratama BUDI SUMARTONO Desiana Putri Dikasitama Dikatama Djoko Herwanto Ferdy Anggrian Ferdy Sastria Ferdy Susanto Feti Fatonah Furqon Kurniawan Muchammad Furqon Muchammad furqon M Muchammad Furqon Muchaddats Muchdatas Nur Rahma Dona Rayhan Kemal Riza Suseno Salsabila Sudibyo Tia Dikatama Tsania