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Abstrak :
Sensors and Instrumentation, Volume 8. Proceedings of the 36th IMAC, A Conference and Exposition on Structural Dynamics, 2018, the eighth volume of nine from the Conference brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on fundamental and applied aspects of Sensors and Instrumentation, including papers on; Sensor Applications, Accelerometer Design, Accelerometer Calibration, Sensor Technology, Energy Harvesting Technology, and Aircraft/Aerospace Technology

Abstrak :
Berkembang pesatnya industri teknologi kedirgantaraan di dunia saat ini memunculkan maraknya penggunaan UAV untuk melakukan berbagai aplikasi dibidang militer maupun sipil. Sama halnya dengan penerbangan pesawat komersial, pengoperasian UAV memunculkan potensi bahaya terhadap ketahanan nasional khususnya keamanan negara dan keselamatan penerbangan. Tesis ini berusaha menjelaskan bagaimana strategi pengamanan pengoperasian UAV untuk dapat memaksimalkan keuntungan dari teknologi UAV dan meminimalkan potensi ancaman dari pengoperasian UAV mendukung ketahanan nasional di Indonesia. Penelitian ini menggunakan pendekatan metode mix methods, analisis menggunakan metode SWOT dan AHP yang didukung analisis deskriptif melalui observasi di lapangan dan wawancara mendalam kepada stakeholder yang terlibat. Pemilihan pendekatan analisis deskriptif pada penelitian ini didasarkan pada pertimbangan untuk mengetahui, memahami serta menganalisa permasalahan yang terjadi dari sudut pandang setiap pihak stakeholder. Penelitian ini berusaha untuk menanamkan pemahaman pentingnya pengaruh pelanggaran dan penyalahgunaan pengoperasian UAV terhadap ketahanan nasional di Indonesia. Berdasarkan analisis SWOT yang dikuatkan dengan keterangan informan yang terdiri dari pelaku bisnis UAV / anggota FASI, Sesdis Dispotdirgaau / Wakasekjen II FASI, Kasubdit Surta Wilhan Kemenhan, Asosiasi Pilot Drone Indonesia (APDI), Inspektor Kelaikudaraan DKPPU Kemenhub, Ketua Air and Space Law Studies Universitas Prasetiya Mulya, Kepala Hukum Komando Pertahanan Udara Nasional; Strategi pengamanan pengoperasian UAV untuk mendukung ketahanan nasional adalah berupa strategi Weaknesses-Threats, yaitu strategi yang dilakukan dengan cara meminimalkan kelemahan dan/dalam menghindari tantangan atau ancaman. Kemudian dengan analisis AHP didapatkan alternatif strategi yang paling penting untuk dijadikan prioritas berdasarkan kriteria efektifitas, efisiensi, resiko dan kelayakan adalah strategi sosialisasi, kemudian berturut-turut didukung oleh strategi revisi peraturan dan penindakan, registrasi/sertifikasi unit dan pilot UAV, dan dengan membangun sistem aplikasi untuk mempermudah pengoperasian UAV.

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The rapid development of the aerospace technology industries in the world today has led to the widespread use of UAVs to carry out various applications in the military and civilian fields. As with commercial flights, the operation of the UAV raises potential hazards to national security, especially to state security and aviation safety. This thesis seeks to explain how the security strategies for operating the UAV can maximize the benefits of UAV technology and minimize the potential threats from the operation of the UAV to support national resilience in Indonesia. This study used the mix methods approach, analysis using SWOT and AHP methods supported by descriptive analysis through field observations and in-depth interviews with stakeholders involved. The selection of the descriptive analysis approach in this study is based on the consideration of knowing, understanding and analyzing the problems that occur from the perspective of each stakeholder. This research seeks to instill an understanding of the importance of the influence of violations and misuse of UAV operations on national security in Indonesia. Based on the SWOT analysis that is corroborated by the information of the informant consisting of UAV businessmen / FASI members, Secretary of the Dispotdirgaau  / FASI Deputy Secretary General, Head of Sub Directorate of Surta Wilhan Kemenhan, Indonesian Pilot Drone Association (APDI), Airworthiness Inspector DKPPU Ministry of Transportation, Chairperson of University Air and Space Law Studies Prasetiya Mulya, Chief of Law for the National Air Defense Command; The strategy to safeguard the operation of UAVs to support national resilience is in the form of a Weaknesses-Threats strategy, namely a strategy carried out by minimizing weaknesses and / in avoiding challenges or threats. Then, with AHP analysis, the most important alternative strategies to be prioritized based on criteria of effectiveness, efficiency, risk and feasibility are socialization strategies, then supported by strategies for revising regulations and enforcement, registration / certification of UAV units and pilots, and by building systems application to facilitate the operation of the UAV.

Abstrak :
This book includes a selection of 30 reviewed and enhanced manuscripts published during the 15th SpaceOps Conference held in May 2018 in Marseille, France. The selection was driven by their quality and relevance to the space operations community. The papers represent a cross-section of three main subject areas: - Mission Management - management tasks for designing, preparing and operating a particular mission - Spacecraft Operations - preparation and implementation of all activities to operate a space vehicle (crewed and uncrewed) under all conditions - Ground Operations - preparation, qualification, and operations of a mission dedicated ground segment and appropriate infrastructure including antennas, control centers, and communication means and interfaces This book promotes the SpaceOps Committees mission to foster the technical interchange on all aspects of space mission operations and ground data systems while promoting and maintaining an international community of space operations experts.

Abstrak :
Biodiesel adalah bahan bakar alternatif pengganti bahan bakar fosil yang terdiri atas ester alkil dan dibuat menggunakan reaksi transesterifikasi. Tingginya viskositas minyak nabati menyebabkan reaksi berjalan lambat. Studi ini bertujuan untuk mengetahui pengaruh hidrodinamika terhadap optimasi proses pembuatan biodiesel dengan menggunakan reaktor jet column. Variabel bebas penelitian adalah kecepatan jet (5, 8, 11 m/s) dan rasio mol metanol terhadap CPO (6:1, 5:1, dan 4:1). Metode LIF (Laser Induced Fluorescence) digunakan untuk menganalisis pengaruh dari variabel bebas untuk mencapai pencampuran homogen. Semakin tinggi kecepatan jet dan rasio mol, semakin tinggi laju pencampuran. Waktu yang dibutuhkan untuk mencapai pencampuran homogen tidak lebih dari 20 detik untuk semua percobaan. Studi reaksi melibatkan reaksi nonkatalitik dan katalitik dengan katalis KOH. Reaktan CPO dan metanol direaksikan selama 60 menit dengan suhu 50-60oC untuk memperoleh yield biodiesel sebesar 80% untuk reaksi katalitik dan 60% untuk reaksi nonkatalitik. Yield biodiesel meningkat seiring dengan naiknya rasio mol dan kecepatan jet. Perbedaan laju pencampuran dan reaksi yang besar menunjukkan bahwa optimasi laju pencampuran tidak memengaruhi pembentukan produk akhir. ......Biodiesel is an alternative fuel to fossil fuel which contains alkyl esters and is made using a transesterification reaction. The high viscosity of vegetable oils leads to slow reactions. This study aims to determine the influence of mixing on the optimization process of making biodiesel using jet reactor column. The independent variables are jet velocity (5, 8, 11 m / s) and mole ratio of methanol to CPO (6:1, 5:1, and 4:1). LIF (Laser Induced Fluorescence) method has been used to analyze the effect of independent variables to achieve homogeneus mixing between reactants. The higher the jet velocity or the mole ratio, the higher is the mixing rate for all runs. Homogeneous mixing is achieved in less than 20 seconds. The study involved noncatalytic and catalytic reactions with KOH as a catalyst. CPO and methanol reactants were reacted for 60 minutes with the temperature 50-60oC to achieve 80% yield biodiesel (in case of catalytic condition) and 60% yield biodiesel (in case of noncatalytic condition). Biodiesel yield increased with increasing mole ratio and jet velocity. Large differences in the order of time between mixing and the reaction showed that the mixing optimization does not affect the rate of final product formation.

Abstrak :
This book shows step-by-step examples of the physical arguments and the resulting calculations obtained using the quick-fire method. Also demonstrate the estimation improvements that can be obtained through the use of more detailed physics-based back-of-the-envelope engineering models. These different methods are used to obtain the solutions to a number of design and performance estimation problems arising from two of the most complex real-world engineering projects : the space shuttle and the hubble space telescope satellite.

Abstrak :
Powered flight : the engineering of aerospace propulsion aims to provide a broader context, allowing observations and comparisons to be made across systems that are overlooked by focusing on a single aspect alone. The physics and history of aerospace propulsion are built on step-by-step, coupled with the development of an appreciation for the mathematics involved in the science and engineering of propulsion. Powered flight : the engineering of aerospace propulsion covers its subject matter both theoretically and with an awareness of the practicalities of the industry. To ensure that the content is clear, representative but also interesting the text is complimented by a range of relevant graphs and photographs including representative engineering, in addition to several propeller performance charts.

Abstrak :
Polymer composites are increasingly used in aerospace applications due to properties such as strength and durability compared to weight. Edited by two leading authorities in the field, this book summarises key recent research on design, manufacture and performance of composite components for aerospace structures. Part one reviews the design and manufacture of different types of composite component. Part two discusses aspects of performance such as stiffness, strength, fatigue, impact and blast behaviour, response to temperature and humidity as well as non-destructive testing and monitoring techniques.

Abstrak :
This book presents high-quality contributions in the subject area of Aerospace System Science and Engineering, including topics such as: Trans-space vehicle systems design and integration, Air vehicle systems, Space vehicle systems, Near-space vehicle systems, Opto-electronic system, Aerospace robotics and unmanned system, Aerospace robotics and unmanned system, Communication, navigation and surveillance, Dynamics and control, Intelligent sensing and Information fusion, Aerodynamics and aircraft design, Aerospace propulsion, Avionics system, Air traffic management, Earth observation, Deep space exploration, Bionic micro-aircraft/spacecraft. The book is a selection of articles from the 2nd International Conference on Aerospace System Science and Engineering, held in Moscow, Russia, from 31 July to 1 August 2018. The conference is co-organized by Shanghai Jiao Tong University and Moscow Aviation Institute. This is a forum that brings together experts in astronautics and aeronautics to share new ideas and findings.

Abstrak :
Top space experts from around the world have collaborated to produce this comprehensive, authoritative, and clearly illustrated reference guide to the fast growing, multi-billion dollar field of satellite applications and space communications. This handbook, done under the auspices of the International Space University based in France, addresses not only system technologies but also examines market dynamics, technical standards and regulatory constraints. The handbook is a completely multi-disciplinary reference book that covers, in an in-depth fashion, the fields of satellite telecommunications, Earth observation, remote sensing, satellite navigation, geographical information systems, and geosynchronous meteorological systems. It covers current practices and designs as well as advanced concepts and future systems. It provides a comparative analysis of the common technologies and design elements for satellite application bus structures, thermal controls, power systems, stabilization techniques, telemetry, command and control (TTC), and orbital configurations. These common aspects are addressed in an integrated fashion to explain how all these space systems share similar design features, but also have quite specialized application packages to carry out their various missions. No other reference in print today provides such a comprehensive and in-depth guide to all forms of application satellites, including small sats as used by countries just beginning space application programs.