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All Journal International Journal of Humanities Education and Social Sciences Indonesian Journal of Chemical Studies (Indones. J. Chem. Stud.)
Gunaryo, Gunaryo
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Humanities Chemistry Economics, Econometrics & Finance Languange, Linguistic, Communication & Media Social Sciences Other

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Diagnostic analysis of potential risks and security systems in rocket development as a supporter of the defense environment ecosystem Donny Haryogi Ramadhan; Gunaryo, Gunaryo; Y.H. Yogaswara
International Journal Of Humanities Education and Social Sciences (IJHESS) Vol 3 No 4 (2024): IJHESS FEBRUARY 2024
Publisher : CV. AFDIFAL MAJU BERKAH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55227/ijhess.v3i4.899

Abstract

State defense is essentially all universal defense efforts which means involving all citizens, territories, and other national resources, as well as being prepared early by the government and held in a total, integrated, directed, and continuous manner to uphold state sovereignty, territorial integrity and the safety of the entire nation from all threats both from outside and from within. This research aims to diagnostically analyze the potential risks and safety systems in rocket development as a benchmarking and basic foothold in the growth of the weapons technology ecosystem. This research uses a qualitative approach method with a literature study approach. The results obtained are in the form of various potential risks which can provide failures and losses in rocket development. The safety system that is possible to implement by prioritizing the suitability found in Indonesian rocket development, is to review and ensure the stages of preparation, integration and testing (or similar) in rocket development.
Exploring the Potential of Carbon-based Radar Absorbing Material Innovations Fahri, Mirad; Bolilanga, Patricya Inggrid Wilhelmina; Gunaryo, Gunaryo; Stiawan, Elva; Kurniadi, Tedi
Indonesian Journal of Chemical Studies Vol. 3 No. 2 (2024): Indones. J. Chem. Stud., December 2024
Publisher : Indonesian Scholar Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55749/ijcs.v3i2.56

Abstract

This review explored the potential of carbon-based radar-absorbing materials (RAM), which had gained significant attention due to their superior properties and performance. In response to the growing demand for stealth technology in the military and civilian sectors, traditional radar-absorbing materials encountered limitations: weight, cost, and effectiveness. Carbon-based materials, such as carbon nanotubes, graphene, and various composites, offered lightweight, flexible, and tunable solutions that enhanced electromagnetic wave absorption across a wide frequency range. This paper examined the underlying mechanisms of radar wave absorption in carbon-based materials, highlighting their advantages over conventional options. In addition, recent advancements in fabrication techniques, including 3D printing and hybrid composite development, were also discussed, emphasizing their role in optimizing performance and sustainability. By synthesizing current research findings, this review aimed to provide a comprehensive understanding of the carbon-based RAM potential in advancing the future of stealth technology. Ultimately, this study presented insights that contribute to the continuing investigation in advanced materials science, suggesting a potential way to develop materials that can enhance radar absorption capabilities and extend their applications in modern technology.
Yellow-Flare Performance Improvement of PVC Addition into Mg-Sodium Nitrate-Based Pyrotechics Gunaryo, Gunaryo; Maharani, Anggaria; Budiman, Anggito; Widyatama, Satria Aqilla; Pratita, Elda; Miwazuki, Shella Athaya
Indonesian Journal of Chemical Studies Vol. 3 No. 2 (2024): Indones. J. Chem. Stud., December 2024
Publisher : Indonesian Scholar Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55749/ijcs.v3i2.60

Abstract

Light pyrotechnics is one strategic defence equipment for civil and military purposes. Additives act as one of the factors that affect the flame in pyrotechnics. Additives were used to slow down the combustion rate so that the flare could burn for a long time without drastically reducing the flame performance of the flare. This study focused on the performance of pyrotechnic flames with variations of PVC as a density-increasing material because it was in the form of a polymer and had high-chlorine content, resulting in a mixture that is difficult to burn. The experiment results exhibited that pyrotechnics without PVC showed intensity with an emission spectrum of 577-585 nm, light intensity of 723-1184 lux, and burning rate of 3.22-3.31 g/s. Increasing the PVC additive composition to 1.5 gr showed emissions with a wavelength of 596-597 nm, decreased intensity from 91-183 lux, and a slower burning rate of 0.72-0.88 g/s. The use of PVC was effectively applied in the 1.76-10.21% fraction and was actively able to slow down the rate of combustion of pyrotechnic mixtures. Hence, PVC could slow down the burning rate and increase density. Adding PVC in yellow pyrotechnics would slow down the burning rate of the pyrotechnic sample with the side effect of reducing the brightness of the yellow color and the intensity of the light.
Co-Authors Anggaria Maharani Bolilanga, Patricya Inggrid Wilhelmina Budiman, Anggito Donny Haryogi Ramadhan Elva Stiawan Fahri, Mirad Kurniadi, Tedi Miwazuki, Shella Athaya Pratita, Elda Widyatama, Satria Aqilla Y.H. Yogaswara