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Jurnal Teknologi Kedirgantaraan (JTK)
Published by Universitas Dirgantara Marsekal Suryadarma
ISSN : 25282778     EISSN : 26849704     DOI : https://doi.org/10.35894/jtk.v6i2
Core Subject : Science, Social, Engineering,
Aerospace Engineering Engineering Environmental Science Materials Science & Nanotechnology Transportation
Jurnal Teknologi Kedirgantaraan (JTK) memuat artikel-artikel hasil penelitian dan kajian analitis kritis bidang teknik penerbangan yang belum pernah dipublikasikan pada media lain. Adapun lingkup bahasan meliputi: propulsi, avionik, struktur, material pesawat terbang, pemeliharaan dan operasional pesawat terbang dan topik-topik yang berkaitan. Tujuan utama dari Jurnal Teknologi Kedirgantaraan adalah mempublikasikan hasil penelitian yang dilakukan dan memotivasi produktivitas karya ilmiah dalam bidang Teknik Penerbangan/Aeronautika. Jurnal Teknologi Kedirgantaraan (JTK) terbit secara berkala dua volume dalam satu tahun. Kami selaku pengelola juga selalu melakukan pembenahan dan perbaikan agar Teknologi Kedirgantaraan ini dapat diakui secara nasional maupun internasional.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 82 Documents
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Review Facility Development of Aircraft Tire Retreading in Indonesia Freddy Franciscus
Jurnal Teknologi Kedirgantaraan Vol 5 No 2 (2020): Jurnal Teknologi Kedirgantaraan
Publisher : FTK UNSURYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (287.792 KB) | DOI: 10.35894/jtk.v5i2.10

Abstract

Aircraft tire retread is the process of retreading or reconditioning aircraft tires after being used several times for take off and landing. Retreading an aircraft tire can be done many times, which is between 3-5 times depending on the level of wear of the tire layer. Data from INACA ‘Indonesia AviationOutlook 2017’ shows that the number of jet aircraft owned by Indonesian airlines for Wide Body is 23 aircraft and Narrow Body is 338 aircraft. Where the number of aircraft tyre in the Nose Landing Gear / NLG and Main Landing Gear / MLG Wide Body aircraft are 55 EA and 216 EA respectively, while for Narrow Body aircraft each is 352 EA and 1488 EA. The available information states that tire retreading needs in Indonesia are around USD 20 million per year. There is a huge opportunity in the need for retreading aircraft tires owned by Indonesian airlines, which is around USD 20 million per year, with 10% growth per year, so the next 5 years will reach around USD 30 million. However, this opportunity cannot be taken by MRO Indonesia because MRO Indonesia does not have the ability to retread airplane tires. The cause of the inability to take up an aircraft tire retreading business opportunity is partly because there is no government policy support to encourage aircraft tire manufacturers to collaborate with Indonesian investors to build a tire retread facility, there is business competition with aircraft tire retreading in Malaysia and Thailand, businesses most only think solely of big profits, and the unattractive business climate in Indonesia such as complicated licensing, inefficient supply chains and incentives provided are less attractive. The steps needed to capture the opportunity to retread aircraft tires are to carry out continuous campaigns and incorporate aircraft tire retread facilities development programs into the National Strategic Program and the Aerospace Industry Roadmap.
Estimasi Gaya Dorong Dari Motor Brushless Dengan Variasi Propeller Untuk Pesawat Model X-UAV Mini Talon Dengan Menggunakan Pengukur Massa Ananda Rafi Rijalul Awwal; Mufti Arifin; Endah Yuniarti
Jurnal Teknologi Kedirgantaraan Vol 5 No 2 (2020): Jurnal Teknologi Kedirgantaraan
Publisher : FTK UNSURYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (370.591 KB) | DOI: 10.35894/jtk.v5i2.16

Abstract

One that affects aircraft performance is the thrust. The thrust is determined according to the requirements of the aircraft itself. This study uses a thrust test stand that uses a mass gauge as a thrust gauge, using two brushless motors and five propellers to determine the optimal thrust for X-UAV Mini Talon aircraft flying missions. The thrust required by the X-UAV Mini Talon aircraft - is known to be 0.6755 N for cruise flights and 4.979 N for take-off aircraft. After testing, the smallest thrust is produced by the configuration of the DYS 2826-13 brushless motor with a 5x3 inch propeller, while the biggest thrust by the RacerStar BR2212 brushless motor with a 10x6 inch propeller. Compared to calculations with propeller static thrust equation, the difference in thrust in testing with propeller static thrust ranges from 15% to 25%. Therefore, the optimal configuration for flying cruising is the DYS 2826-13 brushless motor with a 5x3 inch propeller, which produces a thrust of 0.988 N. Then, for the optimal configuration take-off is the Brushless DYS 2826-13 with a 9x5 inch propeller, which results in a thrust of 6,151. The configuration above was chosen because it is more efficient, with smaller current requirements compared to other configurations with more or less equivalent thrust.
Perbandingan Analisis Termodinamika Mesin TPE-331 dan PT6A-42 Terhadap Variasi Ketinggian Terbang Bismil Rabeta
Jurnal Teknologi Kedirgantaraan Vol 5 No 2 (2020): Jurnal Teknologi Kedirgantaraan
Publisher : FTK UNSURYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3381.192 KB) | DOI: 10.35894/jtk.v5i2.17

Abstract

Mesin turboprop merupakan jenis mesin hybrid yang menyediakan gaya dorong jet sekaligus menggerakan baling-baling. Pada dasarnya proses pengoperasiannya sama dengan turbojet kecuali kerja turbin melalui sebuah poros utama yang terhubung dengan reduction gear yang digunakan untuk memutar baling-baling. Analisis termodinamika telah banyak dilakukan untuk mengetahui kinerja dari mesin turbofan dan turbojet, sedangkan untuk mesin turboprop masih sangat sedikit dilakukan. Pada penelitian ini dilakukan perbandingan analisis termodinamika mesin TPE-331 yang digunakan pada pesawat CASA-212 dimana disertifikasi pada awal tahun 1965 dan mesin PT6A-42 yang digunakan pada pesawat N-219 dimana disertifikasi pada tahun 1983. Perbandingan dilakukan untuk melihat perkembangan mesin turboprop selama hampir 20 tahun dan membandingkan kinerja mesin secara termodinamika untuk masing-masing mesin. Kinerja mesin yang akan dibandingkan meliputi gaya dorong propeller ,kerja kompresor, fuel to air ratio, laju aliran bahan bakar, kerja turbin, kerja spesifik poros propeller, daya poros , jet thrust , daya total dan equivalent shaft horsepower ESHP) .Adapun hasil perhitungannya untuk mesin TPE-331 memiliki nilai gaya dorong propeller tertinggi dengan perbedaan sebesar 21,22 % dengan mesin PT6A-42, kerja kompresor tertinggi ada pada mesin PT6A-42 dengan persentase 8 % lebih besar dibandingkan dengan mesin TPE-331, fuel to air ratio terendah ada pada mesin PT6A-42 yaitu sebesar 3,43% lebih rendah , sedangkan untuk laju bahan bakar tertinggi ada pada mesin PT6A-42 yaitu rata-rata sebesar 40,32%. Kerja turbin terbesar ada pada mesin PT6A-42 yaitu sebesar 3,3% lebih tinggi dibandingkan dengan mesinTPE-331, kerja poros , daya poros, Jet thrust, daya total dan ESHP terbesar dimiliki oleh mesin PT6A-42 masing-masing besarannya secara berturut-turut 1,65 %, 42,60%, 52,40%, 42,40%, 42,40% dibandingkan dengan mesin TPE-331.
Perhitungan Biaya Ketersedian Outboard AFT FLAP pada Maintenance Pesawat B737-800NG Siti Azizah Latifa; Tri; Freddy
Jurnal Teknologi Kedirgantaraan Vol 5 No 2 (2020): Jurnal Teknologi Kedirgantaraan
Publisher : FTK UNSURYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (273.193 KB) | DOI: 10.35894/jtk.v5i2.18

Abstract

Abstrak – Penelitian ini bertujuan mengetahui perencanaan biaya ketersediaan outboard aft flap. Dalam pemecahan permasalahan penelitian ini dilakukan dengan mengunakan aplikasi SWIFT dalam mengantisipasi keterlambatan pesawat dalam kondisi return to service, serta perhitungan estimasi cost yang timbul. Jika maskapai PT. XXX tidak melakukan loan spare part, maka harus mengeluarkan biaya perbaikan sebesar US$ 2.804,46, namun dengan kehilangan total daily revenue sebesar US$ 245.552,18. Sedangkan, jika maskapai PT. XXX menggunakan loan part, maka hanya mengeluarkan total biaya sebesar US$ 5.227,31 tanpa kehilangan daily revenue.
Analisis Sebelum dan Sesudah Dilakukan Proses Pembersihan Terhadap Performa AC Tipe Split Wall Kapasitas 1 1/2 PK ahmad zayadi; Kis Yoga Utomo; Agus Sugiaharto; Wismanto S; Cahyono HP; Ananda Revalby Madaskala
Jurnal Teknologi Kedirgantaraan Vol 6 No 1 (2021): Jurnal Teknologi Kedirgantaraan
Publisher : FTK UNSURYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (444.099 KB) | DOI: 10.35894/jtk.v6i1.19

Abstract

Air conditioning in the room functions to regulate humidity, heating and cooling the air in the room. The purpose of this conditioning is to provide comfort for the user. The process of cleaning the condenser and evaporator pipe fins can improve compressor performance. The research was conducted on an air conditioner with a capacity of 1 1/2 PK using refrigerant R-22. With an average mass flow rate of 82.5 kg/s before cleaning and 79.6 kg/s after cleaning, it decreased by 4.4%. This has an impact on refrigeration where the average value of the impact of refrigeration before cleaning is 145.4 kJ/kg and after cleaning is 150.6 kJ/kg. This means that after the cleaning process, the evaporator can increase the refrigeration in the air conditioning system by 3.4%. The parameters used are the consumption of electrical power, the temperature of the refrigerant entering and leaving the condenser, the temperature of the refrigerant entering and leaving the evaporator. The increase in compressor performance after the cleaning process is carried out, it can be seen from the total value of electrical energy use before cleaning is 10.9 kWh, and after cleaning it becomes 8.8 kWh. This has an effect on the consumption of electrical energy to drive the compressor to be more efficient by 19.26%. COP an average of 3.6 before cleaning and after cleaning to 4.9 means an increase in compressor work by 1.3 or by 26.5%. Compressor work has decreased by 4440.4 Watts or a decrease of 26.8%.
Analysis Of Aircraft Control Input To Produce 3D Continuous Descent Approach (CDA) Trajectory With PY-FME Ronald Andryando; Neno Ruseno
Jurnal Teknologi Kedirgantaraan Vol 6 No 1 (2021): Jurnal Teknologi Kedirgantaraan
Publisher : FTK UNSURYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (669.906 KB) | DOI: 10.35894/jtk.v6i1.20

Abstract

One of proposed solutions to decrease the fuel consumption of a flight is by optimizing descent trajectory using Continuous Descent Approach (CDA). The focus of this research is to analyze the aircraft inputs used in CDA with several types of trajectories (straight and turning) in 3D (Three Dimensional). The CDA concept used is based on Time and Energy Managed Operation concept where the use of idle thrust is the key point. The research will also analyze the fuel consumption of aircraft in CDA trajectory and compare it with conventional descent trajectory. The methodology on this research is simulation using a Python programming module called Py-FME with Cessna-172 aircraft data. The result concluded that thrust and elevator input have significant effect on aircraft controls to achieved CDA. The research also found that CDA could reduce the fuel consumption by 67.6%.
Analisis Kelayakan Pembangunan Fasilitas Vulkanisir Ban Pesawat Terbang Di Indonesia Dan Strategi Pengembangannya: FEASIBILITY ANALYSIS OF DEVELOPMENT OF AIRCRAFT TIRE RETREADING FACILITIES IN INDONESIA AND ITS DEVELOPMENT STRATEGY Freddy Franciscus
Jurnal Teknologi Kedirgantaraan Vol 6 No 1 (2021): Jurnal Teknologi Kedirgantaraan
Publisher : FTK UNSURYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (358.496 KB) | DOI: 10.35894/jtk.v6i1.22

Abstract

Airplane tire retreading is the process of reconditioning an airplane tire layer after several take- offs and landing times. Airplane tire retreading can be done between 3-5 times depending on the wear rate of the tire layers.The total number of aircraft operating in Indonesia is 1259 according to data from the DKPPU, and data from INACA 'Indonesia Aviation Outlook 2017' the number of Wide Body jets is 36 and Narrow Body is 414. From these data, the tires with the largest population and the same size is the aircraft tires B737-800/900/ER and A320-200/300 with the number of tires on the Nose Landing Gear/NLG are 806 EA and in the Main Landing Gear/MLG are 1612 EA. The available information states that the need for retreading tires for all Jet aircraft in Indonesia is around USD 13 million per year. About 80% or around USD 10.4 million per year is spending on retreading aircraft tires for B737-800/900/ER and A320- 200/300.This figure is a big opportunity for Indonesia MRO However, MRO (Maintenance Repair & Overhaul) Indonesia cannot take this opportunity because it still does not have the ability to retread airplane tires. For this reason, the authors conducted a feasibility analysis for the construction of aircraft tire retreading facilities for the B737-800/900/ER and A320-200/300 aircraft in Indonesia and conducted a strategic analysis necessary for the construction of the tire retreading facility to be successful. From the feasibility calculation, it is obtained 29.6% ROI (Return On Investment) and 4.8 year PBP (Pay Back Period) shows that the construction of the B737-800/900/ER and A320-200/300 aircraft tire retreading facilities is very feasible. Several strategies to achieve this are collaborating with Original Equipment Manufacturer/ OEM, seeking strategic partners, asking for support from the Government (the Ministry of Industry) by submitting the tire retreading facility development to the Aerospace Industry Roadmap.
Analisis Numerik Part Spar Pada Sub System Wing To Fuselage Joinner Assembly Pesawat Berkategory Utility Menggunakan Metode Elemen Hingga Muhammad Jayadi; Sahril Afandi; Agus Suprianto; Nurhadi Pramana; Endah Yuniarti
Jurnal Teknologi Kedirgantaraan Vol 6 No 1 (2021): Jurnal Teknologi Kedirgantaraan
Publisher : FTK UNSURYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2021.225 KB) | DOI: 10.35894/jtk.v6i1.24

Abstract

Pesawat Utility adalah kategori pesawat udara yang memiliki konfigurasi tempat duduk kurang dari 9 yang tidak termasuk tempat duduk pilot, Maximum Takeoff Weight 12.500 pounds serta memiliki kemampuan pesawat dapat bermanouver layaknya akrobatik yang di batasi pada sudut 60 sampai 90 derajat[2]. Berdasarkan CASR subbagian 23.305, struktur harus sanggup menahan beban limit tanpa merugikan dan membuat kerusakan permanen. Selain itu struktur juga harus mampu menahan beban ultimate tanpa kegagalan paling tidak selama 3 detik, kecuali kegagalan lokal atau ketidakstabilan struktur antara beban limit dengan beban ultimate yang dapat diterima jika struktur mampu menopang beban ultimate paling tidak selama 3 detik[2]. Penelitian ini melakukan analisis numerik part spar untuk pesawat berkategori utility dengan load sebesar 6G menggunakan material komposit. Selain itu dilakukan proses reduksi berat spar berdasarkan variasi jumlah lamina/ply dengan metode ply drop-off laminate. Tujuan Penelitian ini untuk mengetahui keamanan struktur berdasarkan kriteria kegagalan dan mendapatkan berat yang optimal pada spar. Proses penyelesaian masalah menggunakan metode elemen hingga dengan bantuan software CAE. Penelitian dilakukan pada kondisi statik dengan asumsi pembenanan gaya angkat yang terjadi pada spar. Perhitungan gaya angkat dilakukan dengan metode Schrenk. Tegangan tertinggi terdapat pada arah transversal atau arah tegak lurus serat setelah dilakukan optimisasi sebesar 301.7 MPa. Optimisasi menghasilkan pengurangan massa sebesar 30.41% dari sebelum optimisasi. Berat spar yang optimal sebesar 47.82 kg. Hasil kriteria kegagalan Tsai-Hill menghasilkan struktur spar tersebut aman untuk digunakan.
Estimasi Kebisingan Pemukiman Padat Penduduk Disekitar Bandara Studi Kasus : Bandara Halim Perdanakusuma
Jurnal Teknologi Kedirgantaraan Vol 6 No 1 (2021): Jurnal Teknologi Kedirgantaraan
Publisher : FTK UNSURYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (172.828 KB) | DOI: 10.35894/jtk.v6i1.27

Abstract

 Bandara Halim Perdanakusuma sebagai tempat pertemuan segala aktivitas penerbangan merupakan salah satu sumber yang berpotensi mencemari udara terutama dalam hal kebisingan, dimana hal tersebut dapat mengganggu aktivitas warga sekitar. Banyak faktor yang mempengaruhi pada efek kebisingan terhadap gangguan masyarakat seperti, tingkat suara, durasi, waktu kejadian, jangka kebisingan. Penelitian ini bertujuan untuk mengetahui intensitas kebisingan disetiap titik yang telah ditentukan didaerah pemukiman sekitar bandara Halim Perdana dan menentukan batas kawasan kebisingan pemukiman sekitar menurut Keputusan Menteri Perhubungan No.48 tahun 2002 menggunakan metode perhitungan WECPNL. Alat ukur yang digunakan pada penelitian ini hanya alat ukur kebisingan yang disebut sound level meter. Dalam hasil pengolahan data nilai indeks WECPNL dengan intensitas kebisingannya yaitu jarak 200 meter dengan indeks WECPNL sebesar 74,1 dB, jarak 1000 meter dari ujung landasan pacu 06 dengan indeks WECPNL sebesar 80,7 dB, jarak 1000 meter dari ujung landasan pacu 024 dengan indeks WECPNL sebesar 75,5 dB. Kebisingan pada Bandar Udara Halim Perdanakusuma masih sesuai dengan Keputusan Menteri Perhubungan No. 48 Tahun 2002 dimana dari hasil indeks WECPNL yang dimana terdapat pada kawasan kebisingan tingkat 3 yaitu pada Jl. AMD XII, kawasan kebisingan tingkat 2 yaitu pada Jl. Radar Utara, dan kawasan kebisingan tingkat 1 yaitu pada Jl.Kampung Baru 1.
Rancang Bangun Perangkat Lunak Database Dent and Buckle Chart Pada Pesawat Boeing 737-800 fahmins; muftiarifin; endahyuniarti
Jurnal Teknologi Kedirgantaraan Vol 6 No 1 (2021): Jurnal Teknologi Kedirgantaraan
Publisher : FTK UNSURYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2064.384 KB) | DOI: 10.35894/jtk.v6i1.28

Abstract

Pemeliharaan pada pesawat terbang harus tercatat rapi dan lengkap menurut CASR Part 145, dimana salah satu pencatatan pemeliharaan yaitu catatan pada setiap komponen yang mengalami kerusakan dan perbaikan. Semua dicatat berdasarkan lokasi komponen, tanggal ditemukan dan dokumen yang berkaitan dengan kerusakan dan perbaikan tersebut. Contoh catatan pemeliharaan adalah dent and buckle chart (DBC). Dent and buckle chart yaitu catatan kerusakan dan perbaikan yang telah dilakukan pada struktur pesawat terbang. Fungsi dari DBC ini yaitu untuk memudahkan dalam pencarian riwayat kerusakan dan perbaikan pada pesawat terbang. Penelitian ini berupa rancang bangun perangkat lunak database DBC, tujuannya memudahkan pencatatan DBC, dan penggunaannya dapat diakses di semua device seperti PC (Personal Computer) dan smartphone. Perangkat lunak ini berupa website yang diberi nama “Sysdnb” dan telah dibuat untuk mencatat kerusakan dan perbaikan yang ada pada pesawat tipe B737-800. Metode yang digunakan dalam penelitian ini adalah pertama mengumpulkan data catatan perbaikan dan kerusakan B737-800, kemudian membuat Sysdnb dan input data catatan ke database. Setelah selesai membuat Sysdnb dan data sudah ter-input adalah trial Sysdnb. Hasil trial menunjukkan pencatatan kerusakan dan perbaikan pada pesawat B737-800. Sysdnb ini berhasil dibuat untuk memudahkan personil lapangan dalam melakukan pencarian riwayat kerusakan dan perbaikan pada pesawat B737-800 dan keterbatasan dari sysdnb ini yaitu tetap harus membuka dokumen SRM secara manual. Abstract - Maintenance on an aircraft must be neatly and completely recorded according to CASR Part 145, where one of the maintenance records is a record of each component that is damaged and repaired. All are recorded based on the location of the component, date found and documents relating to the damage and repair. Examples of maintenance records are the dent and buckle chart (DBC). Dent and buckle chart is a record of damage and repairs that have been made to aircraft structures. The function of this DBC is to facilitate the search for a history of damage and repairs to aircraft. This research is in the form of DBC database software design, its purpose is to make it easier to record DBC, and its use can be accessed on all devices such as PCs (Personal Computers) and smartphones. This software is in the form of a website called "Sysdnb" and has been made to record the damage and repairs that exist on the type B737-800 aircraft. The method used in this study is to first collect the B737-800 repair and damage log data, then create a Sysdnb and input the log data to the database. After completing Sysdnb and the data has been input is a trial Sysdnb. The trial results show the recording of damage and repairs on the B737-800 aircraft. This system was successfully created to facilitate field personnel in searching for a history of damage and repairs on the B737-800 aircraft and the limitation of this system is that it still has to open SRM documents manually.

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