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Journal of Science Technology (JoSTec)
Published by PT Inovasi Pratama Internasional
ISSN : -     EISSN : 28307275     DOI : https://doi.org/10.55299/jostec
Core Subject : Science, Engineering,
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering
Journal of Science Technology (JoSTec), e-ISSN: 2830-7275 provides a forum for publishing the original research articles from contributors related to embedded system and control, processor and IC design, network and infrastructure, and computing algorithms. The scope of JoSTec starting from Volume 1 (2019) is as follows: embedded system based on microcomputer/microcontroller; algorithms and artificial intelligence; robotics; control systems; computer vision and pattern recognition; computer networks and security; processor and ASIC design; programable devices based on HDL and IP Core; high-performance computing (HPC); sensor network and IoT; distributed systems; cloud computing, and mobile computing.
Arjuna Subject : Ilmu Komputer (semua kategori) - Sistem Informasi
Articles 34 Documents
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Modeling of the Fresh Fruit Bunches Collection and Transportation System with Agent-Based Simulation in Optimizing the Mode of Transportation on Oil Palm Industry Rizkha Rida
Journal of Science Technology (JoSTec) Vol. 5 No. 1 (2023): Journal of Science Technology (JoSTec)
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/jostec.v5i1.475

Abstract

Uncertainty number of harvests per day causes the allocation of transportation modes are less optimal in collecting fruit from plantations to palm oil mills causing a shortage of trucks in some afdeling and some are unemployed in some afdeling causing large transportation costs. The use of Agent-Based Simulations can help to identify the factors that cause the number of trucks that are not optimal by looking at the behavior and interaction between the agent actors involved in the tbs collection and transportation process. The results showed the utilization rate of transportation modes increased from 27% to 40% by reducing the number of truck units rented from 177 trucks to 118 trucks and reducing transportation collection costs by 0.225% of the total cost value. With the reduced journey time, the quality of the oil palm is better with the reduction of free fatty acids (FFA) and the average weight loss of fruit.
Impact of the fuel mixture ratio of AVGAS 100LL and RON 92 fuel on combustion characteristics Sabam Danny Sulung; Daniel Dewantoro Rumani; Ikhwanul Qiram; Muhammad Nur Cahyo Hidayat Nasrullah; Untung Lestari Nur Wibowo
Journal of Science Technology (JoSTec) Vol. 5 No. 1 (2023): Journal of Science Technology (JoSTec)
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/jostec.v5i1.478

Abstract

AVGAS 100LL is an aviation fuel used in piston engine aircraft, particularly in training aircraft such as the Cessna 172S with Lycoming engines. The use of lead in this fuel can have various health-related concerns. Therefore, reducing the use of leaded fuel has become a solution to address these issues. This study aimed to investigate the combustion characteristics of AVGAS fuels, including AVGAS 100%, AVGAS 75% + PERTAMAX 25%, and AVGAS 50% + PERTAMAX 50%. The research involved conducting combustion tests using a Bunsen burner. The results showed that the addition of PERTAMAX to AVGAS significantly influenced the temperature, color, flame height, and flame area produced. The temperature values were higher for AVGAS 100% compared to AVGAS mixed with PERTAMAX. On the other hand, the flame height and flame area were lower for AVGAS 100% compared to the blended fuels. These findings indicate that the addition of PERTAMAX affects the combustion characteristics of AVGAS fuels. Further studies are recommended to explore and expand our understanding of the effects of blending AVGAS with alternative fuels.
UNDERSTANDING THE IMPACT OF TEMPERATURE ON PILOT PERFORMANCE IN FLIGHT Dimas Endrawan Putra; Efendi; Wisnu Kuncoro; Ikhwanul Qiram; Daniel Dewantoro Rumani
Journal of Science Technology (JoSTec) Vol. 5 No. 1 (2023): Journal of Science Technology (JoSTec)
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/jostec.v5i1.623

Abstract

The cockpit of an airplane is the most important space for pilots to fly, interact and communicate with the necessary information. During flight, airplane pilots face various loads, one example is the comfortable working temperature in the cockpit. The health and performance of pilots is a crucial factor in maintaining aviation safety, considering that pilots are the most vital element in the safety aspect of the aviation industry. Currently, thermal comfort is still a topic that is not fully understood. One of the parameters related to thermal comfort in the cockpit is the room temperature in the cockpit to support the performance, comfort and health of the pilot during flight maneuvers. Based on the data that has been collected, the highest cockpit temperature is achieved at 50oC with an aircraft altitude of 1500 ft and the highest human body temperature is achieved at 37.25oC at a height of 1000 ft where based on this data according to SNI 03-6572-2001 thermal comfort is not achieved or even exceeds the threshold. borderline warm comfortable. Various things can affect thermal comfort, especially the effect of temperature on the cockpit, including cockpit design, air circulation, cockpit/aircraft materials, the effect of engine temperature and also several other factors that have a dominant role in influencing the temperature of the cockpit.
Performance Tests of Cessna 172S Magnetos Under Various Thermal Conditions Muhammad Nur Cahyo Hidayat Nasrullah; Sabam Danny Sulung; Untung Lestari Nur Wibowo; Ikhwanul Qiram
Journal of Science Technology (JoSTec) Vol. 5 No. 1 (2023): Journal of Science Technology (JoSTec)
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/jostec.v5i1.628

Abstract

Magneto serves as the ignition source in the combustion process of piston aircraft engines. Typically, spark-ignition aircraft like the Cessna 172SP are equipped with two ignition systems (dual magnetos). Dual magnetos are installed so that if one system fails, the aircraft can still continue its flight. During the engine startup process, the magneto plays a significant role as the ignition source for the initial combustion before the aircraft engine comes to life. In the case experienced by pilots at the Indonesian Civil Pilot Academy Banyuwangi, starting the engine became challenging when the aircraft had been previously used for a flight. Therefore, this research is conducted to address the underlying causes of this issue. The parameters examined in this research include outside air temperature (OAT), Cylinder Head Temperature (CHT), and Exhaust Gas Temperature (EGT). Data were collected regarding the duration of the engine startup process. The duration time for starting the engine was found to be the highest at an exhaust gas temperature of 135 °F, a cylinder head temperature of 180 °F, and an outside air temperature of 35 °F, with a duration time of 6.8 seconds. Conversely, the shortest engine startup duration was observed at an exhaust gas temperature of 75 °F, a cylinder head temperature of 75 °F, and an outside air temperature of 26 °F, resulting in a duration time of 1.6 seconds.

Page 4 of 4 | Total Record : 34

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