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Prianto, Bayu
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Aerospace Engineering Astronomy

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Stress Analysis of Load Cell Adaptor Designs For The Caliber450mm Solid Rocket Motor Static Test Moranova, Starida; Putro, Idris Eko; Abrizal, Haryadi; Mariani, Lilis; Prianto, Bayu; Hanif, Azizul; Andiarti, Rika; Ekadj, Firza Fadlan
Indonesian Journal of Aerospace Vol. 21 No. 2 (2023): Indonesian Journal Of Aerospace
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/ijoa.2023.2669

Abstract

This study presents a structural analysis of two load cell adaptor designs for a caliber-450 mm solid rocket motor. The structural analysis of a C-shape load cell adaptor and the newly designed truncated-cone shape is presented incorporates a 30-degree truncated disc section and varies the thickness to 30 mm, 25 mm, and 20 mm. The numerical simulation using PATRAN reveals that by altering the arm thickness while maintaining the constant hinge thickness, the 30 mm thickness in the disc section yields the best local maximum stress. However, considering the global maximum stress, the 25 mm thickness emerges as the optimal design. The simulation results show that the 25 mm disc section of the load cell adaptor surpasses the aerospace standard safety factor (SF = 1.5) for both local and global maximum stress.
PENENTUAN POTENSIAL SEL TEORITIS PROSES ELEKTROLISIS NATRIUM KLORIDA MENJADI NATRIUM PERKLORAT Bayu Prianto Prianto, Bayu
Indonesian Journal of Aerospace Vol. 6 No. 1 (2008): Jurnal Teknologi Dirgantara
Publisher : BRIN Publishing

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Abstract

Natrium klorida (NaCl) dapat dioksidasi menjadi natrium perklorat (NaClO4) dengan menggunakan metode elektrokimia. Penelitian ini bertujuan untuk menentukan potensial sel teoritis proses elektrolisis NaCl hingga menjadi NaClO4. Proses elektrolis dibagi dalam empat (4) tahapan reaksi pembentukan, yaitu pembentukan : 1) natrium hipoklorit (NaClO), 2) natrium klorit (NaClO2), 3) natrium klorat (NaClO3) dan 4) natrium perklorat (NaClO4). Potensial sel teoritis dipelajari dengan menggunakan metode komputasi dengan perhitungan mekanika kuantum. Dalam penelitian ini digunakan himpunan dasar B3LYP/6-31++G(3df,3pd) dan B3LYP/6-311+G(2d,p) untuk mencari nilai potensial sel teoritis yang mendekati nilai sebenarnya. Hasil penelitian ini menunjukkan bahwa himpunan dasar B3LYP/6-31++G(3df,3pd) lebih akurat untuk menentukan potensial reduksi standar reaksi 2Cl Cl2  2e dibandingkan dengan himpunan dasar B3LYP/6-311+G(2d,p), dengan nilai potensial sel teoritis yang diperlukan untuk proses elektrolisis NaCl hingga menjadi NaClO4 adalah 2,362 Volt sampai dengan 2,918 Volt.
KAJIAN AWAL MEKANISME REAKSI ELEKTROLISIS NaCl MENJADI NaClO4 UNTUK MENENTUKAN TAHAPAN REAKSI YANG EFEKTIF DARI PROSES ELEKTROLISIS NaCl Prianto, Bayu
Indonesian Journal of Aerospace Vol. 5 No. 2 (2007): Jurnal Teknologi Dirgantara
Publisher : BRIN Publishing

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Abstract

Ammonium Perchlorate is the oxidizer commonly used in propellant. Ammonium Perchlorate compose from ammonium cation (NH4) and perchlorate anion (ClO4). Perchlorate anion can be synthesized from chloride anion (from NaCl solution) by using electrochemical method. Studying of electrochemical mechanism reaction of perchlorate is very important, because ammonium perchlorate is strategic material. With the knowledge of electrochemical mechanism of perchlorate, we will get information of electrochemical reaction process condition, than can be used to do chemical synthesis in the laboratory. Pre-study the mechanism reactions have done by studying of several reaction models. All model reaction is tested by chemical computation method to find effective and eficient reaction model (represented by reaction energy value) From three tested models, we obtained the 3rd model was the effective and eficient reactions to produce perchlorate. The value of Gibbs free energy reaction for hyphochlorite, 240.190 kcal per mol, and 263.974 kcal per mol respectively. Keywords: Elektrolysis, Ammonium Perchlorate, Gibbs reaction.
Co-Authors Abrizal, Haryadi Andiarti, Rika Ekadj, Firza Fadlan Hanif, Azizul Lilis Mariani, Lilis Moranova, Starida Putro, Idris Eko