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FINITE ELEMENT MODELING OF LAPAN-A5/CHIBASAT DEPLOYABLE SOLAR PANEL COMPOSITE PLATE lapan-a5 / chibasat可展开太阳能板复合板的有限元建模
Jurnal Teknologi Dirgantara Pub Date : 2019-04-25 DOI: 10.30536/j.jtd.2018.v16.a3065
Robertus Heru Triharjanto, M.Sc, P. Budiantoro
{"title":"FINITE ELEMENT MODELING OF LAPAN-A5/CHIBASAT DEPLOYABLE SOLAR PANEL COMPOSITE PLATE","authors":"Robertus Heru Triharjanto, M.Sc, P. Budiantoro","doi":"10.30536/j.jtd.2018.v16.a3065","DOIUrl":"https://doi.org/10.30536/j.jtd.2018.v16.a3065","url":null,"abstract":"LAPAN-A5/ChibaSat, that will carry synthetic aperture radar payload, requires a lot more power generation capacity, compared to its predecessor. Therefore, its solar panel will be deployed in orbit to ensure maximum sun exposure. Since the deployable system requires solar panel plate that lightweight and strong, honeycomb composite material is selected. The selection of such material requires special treatment in the satellite structural stiffness calculation. The objective of the research is to find simple stiffness model of the plate, so that later it can be integrated with the total satellite structural model and used by launch authority in its total vehicle modal analysis. The modeling used finite element software, and the simplified honeycomb model is validated using standar plate stiffnes problem. After model validation, the boundary condition as in the LAPAN-A5/ChibaSat deployable system is imposed. The result shows that the stiffness of the deployable solar panel plate has met the launch requirement of PSLV’s auxiliary payload. Therefore, the design mode can be used in the development of LAPAN-A5/ChibaSat.  ","PeriodicalId":276153,"journal":{"name":"Jurnal Teknologi Dirgantara","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130542372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
PENGARUH DIOCTYL ADIPATE TERHADAP SIFAT RHEOLOGIKAL HTPB TERPLASTISISASI (EFFECT OF DIOCTYL ADIPATE ON THE RHEOLOGICAL PROPERTIES OF PLASTICIZED HTPB) DIOCTYL ADIPATE对HTPB的生理特性的影响是可塑性的。
Jurnal Teknologi Dirgantara Pub Date : 2019-04-25 DOI: 10.30536/j.jtd.2018.v16.a3003
A. Restasari, L. Abdillah, R. S. Budi, K. Hartaya
{"title":"PENGARUH DIOCTYL ADIPATE TERHADAP SIFAT RHEOLOGIKAL HTPB TERPLASTISISASI (EFFECT OF DIOCTYL ADIPATE ON THE RHEOLOGICAL PROPERTIES OF PLASTICIZED HTPB)","authors":"A. Restasari, L. Abdillah, R. S. Budi, K. Hartaya","doi":"10.30536/j.jtd.2018.v16.a3003","DOIUrl":"https://doi.org/10.30536/j.jtd.2018.v16.a3003","url":null,"abstract":"Pengembangan pengetahuan terhadap sifat rheologikal isian cair dari propelan berguna untuk mendapatkan sifat slurry yang optimum. Pengembangan ini dapat dimulai dari campuran HTPB-DOA sehingga penelitian ini bertujuan untuk mengetahui pengaruh DOA terhadap sifat rheologikal HTPB-DOA yang meliputi sifat alir terhadap shear rate, viskositas dan viskositas saat zero shear rate. Dalam metodenya, DOA divariasi 0, 5, 10, 15 dan 20% dan dicampur dengan HTPB. Sifat rheologikal dipahami dengan mengukur viskositasnya pada kecepatan putar 0,5; 1; 1,5; 2; 2,5; 3; 4 dengan spindel tipe 2 dari viskometer Brookfield dan menganalisa grafik shear stress vs shear rate serta viskositas vs shear rate. Berdasarkan analisa tersebut, diketahui bahwa campuran HTPB-DOA bersifat shear thickening. Semakin banyak DOA yang ditambahkan, semakin rendah viskositas campuran, semakin rendah nilai viskositas pada zero shear rate dan semakin kuat sifat shear thickening dari campuran.","PeriodicalId":276153,"journal":{"name":"Jurnal Teknologi Dirgantara","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121750282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
CHARACTERISTIC OF MUS-01 WING’S STRUCTURE TESTING MODEL mu -01机翼结构试验模型特点
Jurnal Teknologi Dirgantara Pub Date : 2019-04-25 DOI: 10.30536/j.jtd.2018.v16.a2962
Aryandi Marta, Atik Bintoro, Riki Ardiansyah
{"title":"CHARACTERISTIC OF MUS-01 WING’S STRUCTURE TESTING MODEL","authors":"Aryandi Marta, Atik Bintoro, Riki Ardiansyah","doi":"10.30536/j.jtd.2018.v16.a2962","DOIUrl":"https://doi.org/10.30536/j.jtd.2018.v16.a2962","url":null,"abstract":"The characteristic model of MUS-01 wing structure testing has been performed. Planned, this model will be used as an unmanned wing of the LSU-03NG. The test model is made of composite type e-glass. At the time of testing the structure test model is loaded according to MTOW weight. This research method also involves the unmanned aircraft mission, especially on the model test structure, model dimension, and direct experiment in the form of loading on the test model. The result of characterization of the test model during test, showed that the indicated test model has the characteristics as a test model that is unable to accept the unmanned operational load of LSU-03NG series aircraft. So it can not be used as a consideration for the structure of the unmanned aircraft.","PeriodicalId":276153,"journal":{"name":"Jurnal Teknologi Dirgantara","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129976134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
KAJIAN PROGRAM PENINGKATAN KINERJA PROPELAN KOMPOSIT BERBASIS AP/HTPB/AL 基于AP/HTPB/AL的复合复合改进计划
Jurnal Teknologi Dirgantara Pub Date : 2019-04-25 DOI: 10.30536/j.jtd.2018.v16.a3002
H. Wibowo
{"title":"KAJIAN PROGRAM PENINGKATAN KINERJA PROPELAN KOMPOSIT BERBASIS AP/HTPB/AL","authors":"H. Wibowo","doi":"10.30536/j.jtd.2018.v16.a3002","DOIUrl":"https://doi.org/10.30536/j.jtd.2018.v16.a3002","url":null,"abstract":"Kajian strategi litbang dalam meningkatkan kinerja propelan komposit berbasis AP/HTPB/Al dilakukan dalam rangka mencapai teknologi propelan yang setara dengan negara maju dalam penguasaan teknologi roket sipil, khususnya untuk roket Sonda dan roket Pengorbit Satelit di LAPAN. Kajian dilakukan dengan melakukan review terhadap capaian proplelan saat ini, analisis penyebab-penyebabnya, dan penyusunan strategi untuk mengatasinya. Hasil kajian menunjukkan bahwa diperlukan organisasi, tahapan litbang dan pengelolaan SDM yang sistematis, serta tahapan pencapaian teknologi yang perlu dilakukan. Keterbatasan bahan baku propelan merupakan masalah utama dalam pengembangan propelan di Indonesia. Peningkatan kinerja propelan dapat dilakukan dengan meningkatkan solid loading density dan penambahan bahan energetik tinggi.","PeriodicalId":276153,"journal":{"name":"Jurnal Teknologi Dirgantara","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116042116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Review Perbandingan Teknik Maximum Power Point Tracker (MPPT) untuk Sistem Pengisian Daya menggunakan Sel Surya 太阳能电池充电系统的最大功率点跟踪器 (MPPT) 技术比较评述
Jurnal Teknologi Dirgantara Pub Date : 2019-04-25 DOI: 10.30536/j.jtd.2018.v16.a2998
J. Hamonangan
{"title":"Review Perbandingan Teknik Maximum Power Point Tracker (MPPT) untuk Sistem Pengisian Daya menggunakan Sel Surya","authors":"J. Hamonangan","doi":"10.30536/j.jtd.2018.v16.a2998","DOIUrl":"https://doi.org/10.30536/j.jtd.2018.v16.a2998","url":null,"abstract":"Energi surya telah dianggap sebagai prospek sumber energi terbarukan untuk pembangkit tenaga listrik. Sistem fotovoltaik surya menjadi objek yang populer untuk dikembangkan oleh peneliti. Rendahnya efisiensi dalam konversi energi adalah salah satu kelemahan sistem ini. Modul fotovoltaik memiliki titik operasi tunggal di mana output tegangan dan arus menghasilkan output daya maksimum. Dalam kebanyakan sistem fotovoltaik, algoritma kontrol tertentu, yaitu Maximum Power Point Tracker (MPPT) untuk memanfaatkan secara maksimal energi surya tersebut. Ada tiga metode utama pada MPPT yaitu metode konvensional, metode kecerdasan buatan, dan metode hibrid. Setiap metode memiliki kelebihan dan juga kekurangan. Metode konvensional memiliki kelebihan seperti biaya rendah dan implementasi yang sederhana tetapi juga memiliki kerugian seperti tidak dapat beradaptasi dengan kondisi lingkungan. Metode berdasarkan kecerdasan buatan memiliki Power Point Tracking yang lebih cepat dan koreksi terhadap kondisi lingkungan sebagai kelebihannya tetapi juga memiliki kerugian seperti penerapan yang lebih rumit dan biaya yang lebih mahal.","PeriodicalId":276153,"journal":{"name":"Jurnal Teknologi Dirgantara","volume":"473 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134404331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
SISTEM PENYALA NIRKABEL JARAK JAUH UNTUK MUATAN ROKET (WIRELESS SWITCHING FOR ROCKET PAYLOAD)
Jurnal Teknologi Dirgantara Pub Date : 2019-04-25 DOI: 10.30536/j.jtd.2018.v16.a2976
Endro Artono, S. Salman
{"title":"SISTEM PENYALA NIRKABEL JARAK JAUH UNTUK MUATAN ROKET (WIRELESS SWITCHING FOR ROCKET PAYLOAD)","authors":"Endro Artono, S. Salman","doi":"10.30536/j.jtd.2018.v16.a2976","DOIUrl":"https://doi.org/10.30536/j.jtd.2018.v16.a2976","url":null,"abstract":"Proses penyalaan sistem elektronika pada muatan roket hasil litbang LAPAN selama ini masih manual, dengan menggeser atau menekan saklar pada tabung muatan roket dari posisi mati (OFF) ke posisi hidup (ON). Sistem penyala muatan roket ini dirancang untuk dapat menyalakan atau mematikan muatan roket dengan tanpa melakukan kontak fisik antara operator dengan roket. Dari hasil penelitian ini, muatan roket dapat dinyalakan ataupun dimatikan dari ruang kontrol (ground station) secara nirkabel. Sistem ini juga dapat melepaskan perangkat antarmuka untuk sistem penyalaan dari badan roket, sehingga tidak mengganggu roket saat diluncurkan. Currently, process for turning on the LAPAN rocket’s payload still manually, by shifting or pushing the manual switch placed on the payload rocket’s body, to the OFF or ON direction/ position. This payload wireless switching system is designed for turning the rocket payload to ON or OFF wirelessly, without any phisical contact from operator to the rocket body. The experiment proof that the rocket payload can be turning ON or OFF from the control room wirelessly. The system can also release the umbilical interface from the rocket body before the rocket launched to prevent disruption.","PeriodicalId":276153,"journal":{"name":"Jurnal Teknologi Dirgantara","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115394056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
(AUTOMATIC IDENTIFICATION SYSTEM (AIS) SATELIT DATA CORRECTION USING INTERPOLATION AND EXTRAPOLATION METHODE, (Case Study : LAPAN-A2 and LAPAN-A3 Satellite)) 基于插值外推法的自动识别系统(AIS)卫星数据校正(以LAPAN-A2和LAPAN-A3卫星为例)
Jurnal Teknologi Dirgantara Pub Date : 2019-04-25 DOI: 10.30536/j.jtd.2018.v16.a3049
Abdul Karim
{"title":"(AUTOMATIC IDENTIFICATION SYSTEM (AIS) SATELIT DATA CORRECTION USING INTERPOLATION AND EXTRAPOLATION METHODE, (Case Study : LAPAN-A2 and LAPAN-A3 Satellite))","authors":"Abdul Karim","doi":"10.30536/j.jtd.2018.v16.a3049","DOIUrl":"https://doi.org/10.30536/j.jtd.2018.v16.a3049","url":null,"abstract":"Nasional Institute Aerounautics and Space (LAPAN) has two satellites (LAPAN-A2 and LAPAN-A3) that are carry Automatic Identification System (AIS) sensors. It can be use for monitoring Indonesian maritime. The altitude of the satellite about 642 Km and 500 km so it has a wide area covered and receive big data. The problem is the AIS technology use the Time Division Multiple Access (TDMA) system that has limitations in handling big data so that some data received can be damaged due to collision. Therefore, in this research has been done the analysis and correction data using interpolation and extrapolation methods. The results  is improvements of valid data about 22,6 % for LAPAN-A2 satellite and 20,8 % for LAPAN-A3 satellite.","PeriodicalId":276153,"journal":{"name":"Jurnal Teknologi Dirgantara","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123096480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Full Paper JTD Vol. 16 No.1 Juni 2018 论文全文，第16卷第1期，2018年6月
Jurnal Teknologi Dirgantara Pub Date : 2018-09-17 DOI: 10.30536/j.jtd.2018.v16.a3019
Redaksi Jurnal
{"title":"Full Paper JTD Vol. 16 No.1 Juni 2018","authors":"Redaksi Jurnal","doi":"10.30536/j.jtd.2018.v16.a3019","DOIUrl":"https://doi.org/10.30536/j.jtd.2018.v16.a3019","url":null,"abstract":"","PeriodicalId":276153,"journal":{"name":"Jurnal Teknologi Dirgantara","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115609594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
EVALUASI TEKNIK PENIMBANGAN HIDROSTATIK PADA PENGUKURAN DENSITAS PROPELAN PADAT KOMPOSIT 比较固体抗压系数的比例平衡技术
Jurnal Teknologi Dirgantara Pub Date : 2018-09-17 DOI: 10.30536/j.jtd.2018.v16.a2868
Luthfia Hajar Abdillah, Afni Restasari, Kendra Hartaya, Ratna Rizky Puspitasari
{"title":"EVALUASI TEKNIK PENIMBANGAN HIDROSTATIK PADA PENGUKURAN DENSITAS PROPELAN PADAT KOMPOSIT","authors":"Luthfia Hajar Abdillah, Afni Restasari, Kendra Hartaya, Ratna Rizky Puspitasari","doi":"10.30536/j.jtd.2018.v16.a2868","DOIUrl":"https://doi.org/10.30536/j.jtd.2018.v16.a2868","url":null,"abstract":"Densitas menjadi salah satu data karakteristik propelan padat komposit yang penting. Data nilai densitas propelan ini digunakan dalam proses simulasi dan perancangan motor roket untuk mendapatkan performa roket yang diinginkan. Pengukuran densitas yang dilakukan selama ini menggunakan teknik penimbangan hidrostatik yang melibatkan pengukuran berat sampel di dalam air, sehingga dimungkinkan terjadi penyimpangan hasil pengukuran. Untuk itu tujuan dari penelitian ini adalah untuk mengetahui besarnya penyimpangan nilai densitas propelan yang terjadi dan mengetahui cara pengukuran yang tepat melalui teknik penimbangan hidrostatik sehingga menghasilkan nilai densitas yang lebih sesuai. Beberapa sampel propelan diukur densitasnya menggunakan dua instrumen densitometer untuk melihat adanya penyimpangan hasil pengukuran. Dari hasil penelitian diperoleh bahwa penyimpangan nilai densitas propelan yang terjadi berkisar antara 2,08% hingga 5,58% dengan adanya “delay” pembacaan berat sampel di air.","PeriodicalId":276153,"journal":{"name":"Jurnal Teknologi Dirgantara","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121019204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
PENGGUNAAN BINDER HTPB BERENERGI TINGGI UNTUK MENINGKATKAN ENERGETIK PROPELAN KOMPOSIT 使用HTPB高能量活成器来增加能量替代复合材料的使用
Jurnal Teknologi Dirgantara Pub Date : 2018-09-17 DOI: 10.30536/J.JTD.2018.V16.A2974
L. Abdillah, H. Wibowo, Kendra Hartaya
{"title":"PENGGUNAAN BINDER HTPB BERENERGI TINGGI UNTUK MENINGKATKAN ENERGETIK PROPELAN KOMPOSIT","authors":"L. Abdillah, H. Wibowo, Kendra Hartaya","doi":"10.30536/J.JTD.2018.V16.A2974","DOIUrl":"https://doi.org/10.30536/J.JTD.2018.V16.A2974","url":null,"abstract":"Untuk mendapatkan performa propelan yang lebih energetik, penelitian terbaru menunjukkan bahwa diperlukan penggunaan material-material yang bersifat lebih energetik, misalnya penggunaan binder energetik. Pengawasan yang ketat atas peredaran material energetik seperti ini cukup menyulitkan untuk mendapatkan material-material tersebut. Oleh karena itu kemandirian untuk memiliki material tersebut sudah seharusnya menjadi perhatian. Binder propelan  komposit yang paling banyak digunakan saat ini adalah HTPB yang bersifat non-energetik. Untuk membuatnya lebih berenergi tinggi dapat dilakukan dengan menambahkan gugus yang bersifat energetik seperti gugus nitro, namun tetap aman digunakan (bersifat stabil). Tulisan ini mengkaji  potensi konversi binder HTPB menjadi nitro-HTPB yang bersifat energetik, meliputi material, peralatan, dan metode yang dapat diaplikasikan di Indonesia. Prosesnya adalah nitrasi HTPB menjadi nitro-HTPB.  Berdasarkan kajian energetiknya, nitro-HTPB memiliki potensi untuk meningkatkan sifat energetik propelan padat komposit. Metode proses pembuatan nitro-HTPB yang paling efektif dan optimal adalah proses nitrasi dengan menggunakan bahan sodium nitrit pada suhu rendah (0oC).kata kunci : HTPB, nitro-HTPB, binder energetik, propelan","PeriodicalId":276153,"journal":{"name":"Jurnal Teknologi Dirgantara","volume":"143 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114483073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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