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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 8 Documents
 1 
Search results for , issue "Vol 4, No 2 (2023)" : 8 Documents clear
ANALISIS BENDING PADA KOMPOSIT SERAT ALAM DAUN AGEL DENGAN RESIN EPOXY Sahuburua, Stevward Norenssio; Hartini, Dwi; Adiputra, Bangga Dirgantara
Vortex Vol 4, No 2 (2023)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v4i2.1696

Abstract

The use of composite materials, especially those developed by natural fibers in various equipment, has begun to develop a lot, the use of natural agel leaf fibers as composite materials can reduce the use of synthetic materials and increase the utilization of agel leaf natural fibers which are still a lot of wasted. This study aims to determine the stages or processes of agel leaf natural fiber composite using 2 methods of hand lay up, vacuum bag and to determine the value of the bending strength of agel leaf natural fiber material between variations of the epoxy matrix in the direction of the fibers 0^°  and 〖90〗^°.Based on the data from the test results, it can be concluded that the average value of maximum bending strength in agel leaf natural fiber composites using the vacuum bag manufacturing method with a volume fraction of 60% and fiber direction 0^°  and 〖90〗^° has an average maximum bending strength value that is the highest, namely 11.006 MPa and 11.057 MPa and the composite of agel leaf natural fiber using the hand lay up method (non vacuum bag) with a volume fraction of 50%, 60%, 70% and fiber direction 0^° has the lowest average maximum bending strength values of 3.413 MPa, 5.404 MPa, 4.625 MPa.
GROB G 120 TP-A AIRCRAFT BETA SYSTEM ANALYSIS USING FTA (FAULT TREE ANALYSIS) METHOD Rahmawati, Fajar Khanif; Priyahapsara, Istyawan; Funny, Rindu Alriavindra; Wati, Denisa Trisma
Vortex Vol 4, No 2 (2023)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v4i2.1652

Abstract

Grob G 120 TP - A beta system aircraft is a system that regulates the size of the angle on the propeller. 42 failures occurred in the beta system from August 2016 to May 2021, resulting in the beta system having to be replaced even before reaching its 2500 flight hour age limit. Using the FTA (Fault Tree Analysis) method, which begins with defining the failure and determining the boundary conditions of the beta system, describing the fault tree model, identifying the minimum cut set from the fault tree, performing a qualitative analysis of the faults tree, and doing a quantitative analysis of the fault tree, it can be seen that the failure that often occurs in the beta system of the Grob G 120 TP-A aircraft is the occurrence of high oil temperature over 84 ℃, the qualitative analysis found 12 causes of failure on the beta system, and based on quantitative analysis obtained probability the occurrence of beta system failure is 0.76363.
KAJIAN POTENSI PEMBANGKIT LISTRIK TENAGA SURYA DI BANDARA SULTAN ISKANDAR MUDA BANDA ACEH priyahapsara, istyawan; Pasha, Muhammad Anka
Vortex Vol 4, No 2 (2023)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v4i2.1698

Abstract

Sources of electrical energy in Indonesia still use a lot of conversion results from fossil energy such as coal, gas and oil. This fossil energy source is getting less and less and the price keeps going up and contributes a lot of carbon gas emissions that are released into the air, renewable energy, such as solar energy, wind, hydropower, and biomass are alternative energy sources that are environmentally friendly. which needs to be further developed in the future.The author's analysis will take into account the effect of implementing solar panels on several obstacles to the failure of the electricity supply from PLN at Sultan Iskandar Muda International Airport. The purpose of implementing solar panels is to overcome the failure of PLN electricity supply, save electricity costs and reduce carbon gas emissions to the environment in a step to support the concept of an airport with green energy or Eco- Airport, in the calculation method using component analysis, the effect of temperature and also from an economic perspective on the initial investment of the project
ANALISIS EFEKTIFITAS DRONE PADA PROSES PEMUPUKAN CAIR UNTUK MENINGKATKAN PRODUKTIVITAS TANAMAN PERTANIAN PADI ORGANIK Hariyanto, Kris; Poerwanto, Eko; Nur Santoso, Prasidananto
Vortex Vol 4, No 2 (2023)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v4i2.1658

Abstract

SMK Muhamadiyah Sentolo terletak di wilayah Kabupaten Kulon Progo, Mata pencaharian masyarakat di daerah ini 80% adalah petani yang memiliki etos kerja yang baik..Permasalahan yang dihadapi dalam upaya mengembangkan pertanian antara lain menurunnya minat para generasi muda terhadap usaha di bidang pertanian khususnya tanaman padi, hal tersebut disebabkan karena proses pengerjaan terhadap kegiatan pertanian tersebut relatif cukup melelahkan. Sedangkan generasi tua sudah selayaknya diganti untuk kemudian agar kegiatan pertanian terus berlanjut. Penelitian ini melakukan studi komparasi dengan menggunakan teknologi yang mendukung proses pemupukan cair dengan bantuan drone. Metode yang dilakukan adalah dengan membandingkan penggunaan teknologi drone untuk pemupukan dengan teknologi konvensional atau manual pada tanaman padi selama satu kali musim tanam. Hasil penyemprotan drone yang diperlukan untuk pemupukan pada luasan 1 hektar adalah 0.25 jam, pupuk yang dibutuhkan pada luasan 1 hektar adalah 40 liter, kerja yang dibutuhkan pada luasan 1 hektar adalah 160 liter/jam.
ANALISIS KUALITAS PELAYANAN TERHADAP KEPUASAN DAN LOYALITAS PENGGUNA JASA KARGO DI BANDARA INTERNASIONAL I GUSTI NGURAH RAI Meo, Arnoldus Ale; Gunawan, Gunawan; Priyahapsara, Istyawan
Vortex Vol 4, No 2 (2023)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v4i2.1699

Abstract

This study aims to determine the effect of service quality on the satisfaction and loyalty of cargo service users at I Gusti Ngurah Rai International Airport. This study uses a quantitative descriptive method. The number of samples in this study was 125 respondents. The respondents in this study were users of cargo services at I Gusti Ngurah Rai International Airport. Determination of the sample using accidental sampling technique is a technique of determining the sample by taking respondents who happen to be available or available somewhere according to the research context. Data collection techniques by giving questionnaires to respondents, observation, and documentation. Meanwhile, to analyze the data, the Normality, Heterodicity, Linearity, Simple Regression, and t-tests were carried out using the SPSS 22.00 program. The research results show that: 1) The quality of cargo services is in the high category of 75.2%, the moderately high category is 24.8%, the moderately low category is 0% and the low category is 0%. Satisfaction of cargo service users is in the high category of 96.0%, quite high category of 4.0%, moderately low category of 0%, and low category of 0%. The loyalty of cargo service users is in the high category of 76.0%, quite a high category of 23.2%, moderately low category of 0.8%, and low category of 0%. 2) There is an effect of the quality of cargo services on the satisfaction of cargo service users as shown by the results of the t-test where the probability value (sig.) is 0.00 so that the value is less than the standard error value which is 0.05. 3) There is an effect of the quality of cargo services on the loyalty of cargo service users as shown by the results of the t-test where the probability value (sig.) is 0.016 so the value is less than the standard error value which is 0.05.
ANALISIS PERAWATAN PERENCANAAN PHASE 25 DI BATAM AERO TECHNIC (BAT) SM-SUB Rakahila, Raihan Aventa; Rahmawati, Fajar Khanif
Vortex Vol 4, No 2 (2023)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v4i2.1665

Abstract

Airplanes as a means of transportation are increasingly becoming the flagship of the community. Along with the many flights today, aircraft are not spared also in carrying out maintenance. Punctuality and efficiency of work in maintenance are the main factors so that the aircraft can operate again on time, so that maintenance requires optimizing the number of mechanics according to the workload. While in fact there are still many treatments that are carried out not in accordance with the time that has been determined. This delay is very undesirable by both parties, because it will be detrimental in terms of time and cost. Therefore, careful aircraft maintenance planning and structured work lines must be carried out so that maintenance can be carried out as desired.  The method used is the Critical Path Method (CPM), which is a network critical path method that uses linear time balance. Each activity can be completed faster than normal time by bypassing the activity for a certain fee. In the Critical Path Method (CPM) method, forward calculations and backward calculations are carried out so as to get the results of the critical path (slack). From the results of the analysis, it was found that the value of man hours needed was 89.52 man hours, while the value of man hours needed based on the company's calculation results was 97.43 man hours. There are differences in the results of man hours obtained by the author with from the company.
PERANCANGAN WATER HEATER KAPASITAS 0,1 LITER PER DETIK DENGAN MEMANFAATKAN PANAS MATAHARI UNTUK MENDUKUNG KETAHANAN ENERGI Hamdani, Taufik; Sudarmanto, Sudarmanto; Setiabudi, Dedet Hermawan; Mardwianta, Benedictus; ahmadi, Nurfi; subarjo, Abdul haris; irawati, Mardiana
Vortex Vol 4, No 2 (2023)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v4i2.1667

Abstract

Population growth and technology development are increasing rapidly. These cause the use of energy on the earth is increasing. One effort to obtain energy sources is to utilize solar energy using solar water heater. This research was expected to help the society to save energy derived from fossils. A testing was conducted by designing solar water heater with collector size of 60 cm x 50 cm using black painted aluminum-coated styrofoam insulator and the storage tank made of stainless steel with volume of 40 liter using black painted aluminum-coated styrofoam. In conducting the testing, the data were taken at 09.00 a.m until 04.00 p.m for 5 days. The research was conducted at ITD Adisutjipto. The analysis and discussion showed the solar water heater design and the storage tank used to perform performance the test (efficiency). Within 5 days testing the average of water temperature out (Tout) was 59.75 oC to 76.59 oC with the average rate efficiency of 54.07 % to 54.9 % and the average storage drop rate of 2.97 K / Hr or 17.84 K for 6 hours
ANALISIS KEGAGALAN LUBRICATION SYSTEM AUXILIARY POWER UNIT (APU) PESAWAT Perkasa, Syahmi; Rahmawati, Fajar Khanif
Vortex Vol 4, No 2 (2023)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v4i2.1693

Abstract

The Boeing aircraft is the newest variant of the Boeing 737 aircraft. During operation, various problems will certainly be found. One of the problems that occurs is the failure of the APU Lubrication System. The right type of maintenance is needed to minimize or prevent failure. The method used is the Failure Mode and Effect Analysis (FMEA) and Risk Priority Number (RPN) methods. The first step is to identify failures in each component. each failure mode and failure effect that occurs in each component is translated into the FMEA table. The conclusion obtained is identification of failures that occur in the APU lubrication system, namely there are 22 failures in the APU lubrication system, 11 cases of Oil clog failure, 7 cases of Oil leak failure, 4 cases of Oil Temperatue failure. Failure cases that have a high critical failure modes are oil clog with an RPN value of 288 and oil leak with an RPN value of 256, while moderate critical failure modes is oil temperature with an RPN value of 168.

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