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Vortex
Published by Institut Teknologi Dirgantara Adisutjipto
ISSN : 27216152     EISSN : 30217601     DOI : https://doi.org/10.28989/vortex
Core Subject : Science, Engineering,
Aerospace Engineering Earth & Planetary Sciences Energy Materials Science & Nanotechnology Mechanical Engineering
Vortex merupakan jurnal ilmiah dalam diang dirgantara dengan cakupan Perancangan Pesawat Terbang, Perawatan Pesawat Terbang, Operasi Penerbangan, Mesin Pesawat Terbang dan Elektronika Penerbangan
Arjuna Subject : Ilmu Material (semua kategori) - Logam dan Paduan Logam
Articles 75 Documents
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RELIABILITY ANALYSIS OF HELICOPTER BLADE ROTOR PLAY BELL 412 USING NORMAL DISTRIBUTION METHOD Rastra Arif Pradana; Kris Hariyanto; Fajar Khanif Rahmawati
Vortex Vol 1, No 2 (2020)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (470.662 KB) | DOI: 10.28989/vortex.v1i2.897

Abstract

At the beginning of operation, a main rotor blade on helicopter is certainly in the best condition. When it gets older, the main rotor blade condition will decrease because of the presence of bent, material fatigue and human error during operation. Based on the background, it is necessary to identify the level of reliability of main rotor blade on the Bell 412 helicopter using the normal distribution method. The research data were the age of components of main rotor blade on Bell 412 helicopter during 27 years.Based on the analysis of calculation of the reliability level, employing the normal distribution method and using Microsoft Excel, the reliability value (R) of all serial numbers of Bell 412 helicopter main rotor blade was 99%, which indicates the reliability of the Bell 412 helicopter main rotor blade is very good.
Advantages and Losses Analysis on Burning Hours by The Production Planning Control in Determining Time Implementation of Maintenance Activities Fajar Khanif Rahmawati; Humaid Iswahyu Hafizh Rakha
Vortex Vol 2, No 2 (2021)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (972.031 KB) | DOI: 10.28989/vortex.v2i2.981

Abstract

Burning Hours is the one of  policy in scheduling aircraft maintenance. With the burning hours the operator could performed aircraft maintenance before the due time. Burning Hours is indeed beneficial for flight operators to maintain the stability of the safety of the aircraft operation. Using the quantitative analysis method with the sample data’s from two aircraft, found that the burning hours affects to Burning Hours Cost loss for every aircraft meintenance activity. The value of Burning Hours Cost Loss and Potential Lost per Day needs to be considered by operators in scheduling maintenance activities, because it is possible that Burning Hours cannot be avoided in aircraft operation. Based on the data processing,  the  value of burning hours cost lost is not more than limit of potential lost per day.  However it should also be considered if burning hours applied continuously will increase maintenance cost. Therefore, between maintenance planning department and the operation department should keep good coordination to minimize the burning hours cost loss. Keywords: Planning, Maintenance, Burning Hours
ANALISIS TENSILE STRENGTH KOMPOSIT SERAT DAUN AGEL BERORIENTASI ARAH 0 DERAJAT DENGAN VARIASI MATRIKS Lazuardy Rahendra Pinandhita
Vortex Vol 3, No 1 (2022)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (432.426 KB) | DOI: 10.28989/vortex.v3i1.1177

Abstract

Composite is a material that is made by combining two types of materials that have different properties. Composites material made of natural fiber continue to be researched and developed to become an alternative material for metal substitutes. Natural fibers have advantages such as environmentally friendly, low density, recyclable, biodegradable, non-toxic, low cost, and good non-abrasive and heat retaining properties. The test carried out is a tensile test that is adjusted to the ASTM D3039 test standard using a Universal Testing Machine (UTM) tool to obtain stress and strain values. The results of the tensile strength of the agel leaf fiber composite material with an epoxy matrix with fiber direction 00 is 9.588294 MPa and with a polyester matrix in same direction 00 is equal to 7,236818 MPa.
ANALISIS TERBANG MELUNCUR (GLIDE FLIGHT) PESAWAT TERBANG STTA-12MXA bahrun bahrun; Bangga Dirgantara Adiputra
Vortex Vol 1, No 1 (2020)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (388.329 KB) | DOI: 10.28989/vortex.v1i1.725

Abstract

In designing the STTA-12MXA aircraft, analysis of the ability of the glide is one of the important aspects. The analysis was carried out using a numerical approach. There are 2 scenarios used to see the ability of the glide, namely the maximum distance and maximum flight time. The results showed that the maximum distance that the STTA-12MXA aircraft could reach when glide from 13500 ft is 64 km and for the maximum flight time is 23 minutes.
FAILURE OF ELECTRIC MOTOR-DRIVEN PUMP BOEING SYSTEM 737-800 Anggun Nurul Hidayah
Vortex Vol 2, No 1 (2021)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (324.731 KB) | DOI: 10.28989/vortex.v2i1.934

Abstract

This study aims to determine the results of the analysis of the causes  a failure that occurred in the Electric Motor-Driven Pump system on an aircraft. Boeing 737-800. The data used is in the form of a Pilot Report from the Batik airline.Water in the period 2013 to 2020.The method used in this research is Failure Mode and Effect Criticality Analysis (FMECA). FMECA is a method used to analyze the causes of damage to a system / component,along with the effects if there is damage to the system / component. The first step in this research is to find case data happened to the hydraulic system (ATA 29) on the airline Batik Air, then perform data processing. From the results of the analysis, the results of the RPN value on Electric Motor-Driven.The highest pump is because EMDP cannot supply pressure to the system. Based on the RPN calculation, the RPN value was obtained at 12. This value obtained from the matrix in the safety standard manual from Batik Air.
MAINTENANCE COST TERJADWAL TINGKAT SEDANG PESAWAT GROB G 120 TP-A di SKADRON TEKNIK 043 ADISUTJIPTO YOGYAKARTA Charis Ira Sujana Ginting; Fajar Khanif Rahamawati; Sri Mulyani
Vortex Vol 3, No 1 (2022)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (423.199 KB) | DOI: 10.28989/vortex.v3i1.1180

Abstract

The aircraft that used in this research is Grob G 120TP-A. Purpose of this research is support planning costs for scheduled maintenance in the period of 2020 and forecast the maintenance costs on the PI-600 flight hours for the period 2021, so that the aircraft is always in a state of airworthiness in order to support the implementation of operational activities as a training aircraft for the Indonesian Air Force. Maintenance costs on Periodic Inspection 600 flight hours of Grob G 120 TP-A aircraft in 2020 include employee salaries, spare parts, consumable materials, and fuel costs. Forecasting maintenance costs using the trend exponential method which uses maintenance cost data from 2016 to 2020. The results of the 600 flight hours of periodic inspection maintenance costs are Rp.476.527.879,92.and the results of forecasting maintenance costs for the Periodic Inspection 600 Flying Hours of the Grob G 120 TP-A aircraft using the trend least square method for the 2021 fiscal year is Rp. 408.667.919,9.
STUDI EKSPERIMEN ALAT DESTILASI TENAGA SURYA DI KELURAHAN WAY HUWI Ahmad Fikri Ramadhan; Lathifa Putri Afisna; Ajeng Maharani; Nabila Ramadhanty; Rabin Isak; Wulan Ningsih
Vortex Vol 3, No 2 (2022)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (447.549 KB) | DOI: 10.28989/vortex.v3i2.1260

Abstract

Destilasi merupakan salah satu proses pengolahan air keruh menjadi air bersih. Pada prinsipnya penyulingan merupakan cara sederhana untuk mendapatkan air bersih melalui proses penyulingan air kotor. Dalam proses distilasi, terdapat proses perpindahan panas, penguapan, dan kondensasi. Pada percobaan ini akan membuat alat destilasi air sederhana dengan menggunakan alat dan bahan yang terbuat dari stainless steel, styrofoam 2, aluminium foil, lakban hitam, lakban bening, kaca 28x34 cm. (tebal 3 mm), tipe ganda, gunting, pemotong, penggaris, dan air keruh. Hasil pengujian diperoleh dengan cara mengumpulkan data dengan cara mengkompromikan alat destilasi yang sudah berisi baskom stainless steel berisi air keruh di Desa Way Huwi.Kemudian udara ditempatkan di bawah sinar matahari. Pengambilan data suhu dan volume dilakukan mulai pukul 08.00 s/d 17.00 WIB. Dari data percobaan dapat diketahui bahwa efisiensi alat pada volume 1000 ml adalah 13,2%, pada volume 500 ml memiliki efisiensi 10,8%, dan pada volume 300 ml memiliki efisiensi. sebesar 10,3%. Kemudian ketebalan kaca yang digunakan sebagai penutup juga mempengaruhi efisiensi alat distilasi udara, dan ketebalan kaca yang efisien adalah 3 mm. Untuk mendapatkan data yang baik yang diperlukan sinar matahari yang terik. Semakin panas sinar matahari yang mengenai alat destilasi udara maka semakin cepat proses penguapan dan semakin banyak volume udara suling.Kemudian ketebalan kaca yang digunakan sebagai penutup juga mempengaruhi efisiensi alat distilasi udara, dan ketebalan kaca yang efisien adalah 3 mm. Untuk mendapatkan data yang baik yang diperlukan sinar matahari yang terik. Semakin panas sinar matahari yang mengenai alat destilasi udara maka semakin cepat proses penguapan dan semakin banyak volume udara suling. Kemudian ketebalan kaca yang digunakan sebagai penutup juga mempengaruhi efisiensi alat distilasi udara, dan ketebalan kaca yang efisien adalah 3 mm. Untuk mendapatkan data yang baik yang diperlukan sinar matahari yang terik. Semakin panas sinar matahari yang mengenai alat destilasi udara maka semakin cepat proses penguapan dan semakin banyak volume udara suling. 
ANALYSIS OF SUPPLY COMPONENT OF BETA VALVE, BLEED VALVE AND PROPELLER REDUCTION GEARBOX Ririn Isnawati
Vortex Vol 1, No 1 (2020)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (353.463 KB) | DOI: 10.28989/vortex.v1i1.701

Abstract

Maintenance  is  a  very  important  thing  to  do  in  order  to  keep  the  aircraft  in flightworthiness. One form of maintenance activity is the replacement of components that have been damaged (failed). Inventory components can not be a avided because to get it can not be done  suddenly  while  for  those  needs  can  occur  suddenly.  Thus,  it  is  necessary  to  plan  the number  of  component  inventories  so  that  smooth  production  is  maintained.  Efforts  to  solve these problems use the Mean Time Between Removal (MTBR) equation. Where MTBR is used to determine inventory levels and component replacement scheduling. In addition, the MTBR is a formula or model to determine how much inventory per year will minimize the depletion of  inventory  in  the depository  and  for  estimating  component  replacement.  From  the  data processingof the G120 TP-A GROB, the number of component inventories in one year is based on  the  age  of  components  from  manufacture (MTBRStandard),  among  others:  10  Beta  Valve Components, 17 Bleed Valve Components, and 13 Propeller Reduction Gearbox Components
PULL AND BENDING FORCE USING FIBERGLASS WR EPOXY COMPOSITE MATERIALS AND FIBER CARBON EPOXY Alphario Rachmatino Yudiana
Vortex Vol 2, No 1 (2021)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (493.546 KB) | DOI: 10.28989/vortex.v2i1.896

Abstract

Bending testing is carried out in the lab. Nurtanio Adisutjipto College of Technology Yogyakarta uses the Gotech Testing Machine INC (Universal Testing Machine) UTM testing machine where the results obtained in the test are in the form of a graphic in which the maximum load value, elastic modulus, area, yield point and span have been obtained. From the results of these tests, we can compare the average value of the maximum load and the modulus of elasticity received in each specimen with variations in carbon fiber and WR fiberglass.
MENTAL WORKLOAD OF AIR TRAFFIC CONTROL (ATC) PERSONNEL AT ADISUTJIPTO INTERNATIONAL AIRPORT Via Choirul Seftiyana
Vortex Vol 2, No 2 (2021)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (748.171 KB) | DOI: 10.28989/vortex.v2i2.1008

Abstract

Air traffic controllers are under excessive stress because of their job. This has been linked to aspects of ATC work such as high job demands, time or responsibility pressure, or inadequate equipment. Types of work that require more vigilance, such as air traffic controllers at airports, are closely related to mental jobs that require high concentration. Because there is a negative impact on a company if it gives mental workload too high or too low for its employees, it is necessary to measure it to find out the right mental workload for its employees. This study aims to calculate the mental workload felt by ATC personnel in the APP unit. Measurement of mental workload in this study using the NASA-TLX (National Aeronautics and Space Administration Task Load Index). This method measures 6 (six) dimensions of workload size, namely Mental Demand, Physical Demand, Temporal Demand, Performance, Effort and Frustation Level

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