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LTE Services
by Charlotte Letamendia Jean-Gabriel RémyLTE (Long Term Evolution) is commonly marketed as 4G. LTE and LTE Advanced have been recognized by ITU-R and ITU-T (International Telecommunications Union - Telecommunications) as the principal solution for the future mobile communication networks standards. They are thus the framework of what the marketing calls 4G and possibly also 5G.This book describes various aspects of LTE as well as the change of paradigm, which it is bringing to mobile communications, focusing on LTE standards and architecture, OFDMA, the Full IP Core Network and LTE security.
LTE Signaling
by Karsten Gaenger Ralf KreherA comprehensive reference on the call procedures of 4G RAN and Core networks, LTE Signaling, Troubleshooting and Optimization describes the protocols and procedures of LTE. It explains essential topics from basic performance measurement counters, radio quality and user plane quality to the standards, architecture, objectives and functions of the different interfaces. The first section gives an overview of LTE/EPC network architecture, reference points, protocol stacks, information elements and elementary procedures. The proceeding parts target more advanced topics to cover LTE/EPC signalling and radio quality analysis.This book supplements the information provided in the 3GPP standards by giving readers access to a universal LTE/EPC protocol sequence to ensure they have a clear understanding of the issues involved. It describes the normal signaling procedures as well as explaining how to identify and troubleshoot abnormal network behavior and common failure causes.Enables the reader to understand the signaling procedures and parameters that need to be analyzed when monitoring UMTS networksCovers the essential facts on signaling procedures by providing first hand information taken from real LTE/EPC tracesA useful reference on the topic, also providing sufficient details for test and measurement experts who need to analyze LTE/EPC signaling procedures and measurements at the most detailed levelContains a description of LTE air interface monitoring scenarios as well as other key topics up to an advanced levelLTE Signaling, Troubleshooting and Optimization is the Long Term Evolution successor to the previous Wiley books UMTS Signaling and UMTS Performance Measurement.
LTE Signaling: Troubleshooting and Optimization
by Ralf Kreher Karsten GaengerA comprehensive reference on the call procedures of 4G RAN and Core networks, LTE Signaling, Troubleshooting and Optimization describes the protocols and procedures of LTE. It explains essential topics from basic performance measurement counters, radio quality and user plane quality to the standards, architecture, objectives and functions of the different interfaces. The first section gives an overview of LTE/EPC network architecture, reference points, protocol stacks, information elements and elementary procedures. The proceeding parts target more advanced topics to cover LTE/EPC signalling and radio quality analysis. This book supplements the information provided in the 3GPP standards by giving readers access to a universal LTE/EPC protocol sequence to ensure they have a clear understanding of the issues involved. It describes the normal signaling procedures as well as explaining how to identify and troubleshoot abnormal network behavior and common failure causes. Enables the reader to understand the signaling procedures and parameters that need to be analyzed when monitoring UMTS networks Covers the essential facts on signaling procedures by providing first hand information taken from real LTE/EPC traces A useful reference on the topic, also providing sufficient details for test and measurement experts who need to analyze LTE/EPC signaling procedures and measurements at the most detailed level Contains a description of LTE air interface monitoring scenarios as well as other key topics up to an advanced level LTE Signaling, Troubleshooting and Optimization is the Long Term Evolution successor to the previous Wiley books UMTS Signaling and UMTS Performance Measurement.
LTE Small Cell Optimization
by Antti Toskala Jussi Reunanen Harri HolmaThis book addresses R&D and standardization activities on LTE small cells and network optimization, focusing on 3GPP evolution to Release 13. In addition, the book is written by experts from Renesas, T-Mobile, Teliasonera and Videotron. The book covers: 1) LTE small cells from specification to products and field results, 2) Latest 3GPP evolution to Release 13 and 3) LTE optimization and learnings from the field.
LTE Standards
by Jean-Gabriel Rémy Charlotte LetamendiaLTE (long-term evolution) mobile communication system is offering high bitrates in IP communications. Fourth Generation Mobile Communications/LTE describes various aspects of LTE as well as the change of paradigm, which it is bringing to mobile communications. The book is a vital resource for the entire mobile communication community. Coverage includes: LTE standards and architecture, Radio access sub-system, Signaling on the radio path, Macrocells, microcells, femtocells, SIM card and security, SIM card description, GPS driven applications, The Apple model, and much more more.
LTE - The UMTS Long Term Evolution
by Stefania Sesia Issam Toufik Matthew Baker"Where this book is exceptional is that the reader will not just learn how LTE works but why it works"Adrian Scrase, ETSI Vice-President, International Partnership ProjectsFollowing on the success of the first edition, this book is fully updated, covering the latest additions to LTE and the key features of LTE-Advanced.This book builds on the success of its predecessor, offering the same comprehensive system-level understanding built on explanations of the underlying theory, now expanded to include complete coverage of Release 9 and the developing specifications for LTE-Advanced. The book is a collaborative effort of more than 40 key experts representing over 20 companies actively participating in the development of LTE, as well as academia. The book highlights practical implications, illustrates the expected performance, and draws comparisons with the well-known WCDMA/HSPA standards. The authors not only pay special attention to the physical layer, giving an insight into the fundamental concepts of OFDMA-FDMA and MIMO, but also cover the higher protocol layers and system architecture to enable the reader to gain an overall understanding of the system.Key New Features:Comprehensively updated with the latest changes of the LTE Release 8 specifications, including improved coverage of Radio Resource Management RF aspects and performance requirementsProvides detailed coverage of the new LTE Release 9 features, including: eMBMS, dual-layer beamforming, user equipment positioning, home eNodeBs / femtocells and pico cells and self-optimizing networksEvaluates the LTE system performanceIntroduces LTE-Advanced, explaining its context and motivation, as well as the key new features including: carrier aggregation, relaying, high-order MIMO, and Cooperative Multi-Point transmission (CoMP).Includes an accompanying website containing a complete list of acronyms related to LTE and LTE-Advanced, with a brief description of each (http://www.wiley.com/go/sesia_theumts)This book is an invaluable reference for all research and development engineers involved in implementation of LTE or LTE-Advanced, as well as graduate and PhD students in wireless communications. Network operators, service providers and R&D managers will also find this book insightful.
LTE, WiMAX and WLAN Network Design, Optimization and Performance Analysis
by Leonhard KorowajczukA technological overview of LTE and WiMAX LTE, WiMAX and WLAN Network Design, Optimization and Performance Analysis provides a practical guide to LTE and WiMAX technologies introducing various tools and concepts used within. In addition, topics such as traffic modelling of IP-centric networks, RF propagation, fading, mobility, and indoor coverage are explored; new techniques which increase throughput such as MIMO and AAS technology are highlighted; and simulation, network design and performance analysis are also examined. Finally, in the latter part of the book Korowajczuk gives a step-by-step guide to network design, providing readers with the capability to build reliable and robust data networks. By focusing on LTE and WiMAX this book extends current network planning approaches to next generation wireless systems based on OFDMA, providing an essential resource for engineers and operators of fixed and wireless broadband data access networks. With information presented in a sequential format, LTE, WiMAX and WLAN Network Design, Optimization and Performance Analysis aids a progressive development of knowledge, complementing latter graduate and postgraduate courses while also providing a valuable resource to network designers, equipment vendors, reference material, operators, consultants, and regulators. Key Features: One of the first books to comprehensively explain and evaluate LTE Provides an unique explanation of the basic concepts involved in wireless broadband technologies and their applications in LTE, WiMAX, and WLAN before progressing to the network design Demonstrates the application of network planning for LTE and WiMAX with theoretical and practical approaches Includes all aspects of system design and optimization, such as dynamic traffic simulations, multi-layered traffic analysis, statistical interference analysis, and performance estimations
LTspice® for Linear Circuits
by James A. SvobodaLTspice® for Linear Circuits Introduce yourself to the industry-leading software in electronic circuit simulation The simulation of electronic circuits is a crucial tool in modern electrical engineering. Many currently available software toolkits for circuit simulation are expensive, or nominally free but with significant restrictions on features and applications. LTspice®, a software distributed by semiconductor manufacturer Analog Devices, is not only the most widely used SPICE-based circuit simulator in the industry, but also free and unrestricted. LTspice®for Linear Circuits provides a comprehensive introduction to this software and its circuit simulation capabilities. Focusing on the fostering of practical knowledge, the book develops a six-step strategy for solving circuit analysis problems, beginning with the formulation of the problem, and proceeding through the simulation and the review of results. Readable and built around an easy-to-use, accessible software, LTspice® for Linear Circuits is an essential tool for any would-be electrical engineer. LTspice® for Linear Circuits readers will also find: Practical examples of circuit analysis problems and their solutions Detailed treatment of problems involving DC Circuits, First-Order Circuits, AC Circuits, Frequency Response and more Educational content from an author with decades of experience teaching electrical circuits LTspice®for Linear Circuits is perfect for undergraduates in electrical engineering and adjacent subjects, as well as anyone looking for an introduction to this widely used software.
Lubricant Additives: Chemistry and Applications, Third Edition (Chemical Industries #Vol. 90)
by Leslie R. RudnickThis indispensable book describes lubricant additives, their synthesis, chemistry, and mode of action. All important areas of application are covered, detailing which lubricants are needed for a particular application. Laboratory and field performance data for each application is provided and the design of cost-effective, environmentally friendly technologies is fully explored. This edition includes new chapters on chlorohydrocarbons, foaming chemistry and physics, antifoams for nonaqueous lubricants, hydrogenated styrene–diene viscosity modifiers, alkylated aromatics, and the impact of REACh and GHS on the lubricant industry.
Lubricant Analysis and Condition Monitoring
by R. David WhitbyAlmost all mechanical devices used in every industry require lubrication. Lubricant Analysis and Condition Monitoring explains the benefits of identifying, planning, implementing and using lubricant and machine condition monitoring programmes to extend the lifetimes of both lubricants and machines, to achieve maximum productivity and profitability while reducing impacts on waste and the environment. This book: Offers a comprehensive overview of all types of tests used in lubricant condition monitoring programmes Discusses monitoring the condition of all types of components, machines, equipment and systems used in all industries Considers new and emerging machines, equipment and systems, including electric and hybrid vehicles Suggests which tests to use for each type of machine, equipment or system and, just as importantly, which tests not to use Provides practical examples of how to set up, run and manage condition monitoring programmes and how to achieve significant cost savings through planned and predictive maintenance schedules Gathering vital information that users of lubricants need in one place, this book is of practical use to mechanical, maintenance, manufacturing and marine engineers as well as metallurgists, chemists and maintenance technicians.
Lubricant Blending and Quality Assurance
by R. David WhitbyMany people, including those involved in the manufacturing, marketing and selling of lubricants, believe that blending lubricants is simply a matter of putting one or more base oils and several additives into a tank of some kind and stirring them around to mix them. Blending lubricants that meet customers’ demands requires much more than this. The correct ingredients of the right quality need to be used in precisely controlled quantities. The ingredients need to be tested prior to blending and the finished products need to be tested following blending. The ingredients need to be stored and mixed under carefully controlled conditions. The finished lubricants need to be stored and packaged carefully and then delivered to customers correctly. <P><P>This book discusses all of these issues, describes the different types of equipment used to blend lubricants, provides guidance on how best to use this equipment, and offers tips and techniques to help to avoid problems. It focuses on liquid lubricants. Greases are not discussed, as their manufacture involves very different manufacturing procedures compared with those concerned with liquid lubricants. <P><P>The book starts with descriptions and discussion of the properties and characteristics of the main types of mineral and synthetic base oils, as well as the properties and characteristics of the main types of additives that are used in lubricant formulations. Criteria and methodologies used to design both new and upgraded blending plants are covered next. The types and operation of the equipment used in lubricant blending plants are described and discussed, together with a chapter on how to avoid problems before, during, and after blending. Testing and analysis of base oils, additives, and blended lubricants are covered in two separate chapters. Procedures for quality control and quality management in lubricant blending plants are also discussed in two separate chapters. Types of packages for lubricants are reviewed, together with methods for filling packages and methods for transporting lubricants in bulk. The storage of lubricants and supply chain management is also covered in depth.
Lubricant Marketing, Selling, and Key Account Management
by R. David WhitbyThe global lubricants market exceeds $110 billion, with strong future-estimated annual growth projections. While much has been written about the technical aspects of lubricant development, Lubricant Marketing, Selling, and Key Account Management fills a need for a comprehensive guide on the important commercial aspects of the business, offering unique and valuable insights from a veteran of the industry. It answers questions and offers insights on how to effectively market and sell all types of lubricants, including automotive, industrial, mining, marine, agricultural and aerospace, among others. Covers how and why people and companies buy lubricants. Instructs readers how to research and analyze markets and use the results to plan marketing and sales campaigns and activities. Details how to identify specific target market segments and sell to key lubricant accounts. Discusses how to forecast future demand for lubricants in all types of global markets. This practical book is written for technical and non-technical readers involved in the sale and management of lubricant products and offers hands-on guidance for how to successfully navigate and grow your profitability in this vitally important product sector.
Lubricants: Introduction to Properties and Performance
by Marika Torbacke Åsa Kassman Rudolphi Elisabet KassfeldtThose working with tribology often have a background in mechanical engineering, while people working with lubricant development have a chemistry/chemical engineering background. This means they have a tradition of approaching problems in different ways. Today’s product development puts higher demands on timing and quality, requiring collaboration between people with different backgrounds. However, they can lack understanding of each other’s challenges as well as a common language, and so this book aims to bridge the gap between these two areas. Lubricants: Introduction to Properties and Performance provides an easy to understand overview of tribology and lubricant chemistry. The first part of the book is theoretical and provides an introduction to tribological contact, friction, wear and lubrication, as well as the basic concepts regarding properties and the most commonly made analyses on lubricants. Base fluids and their properties and common additives used in lubricants are also covered. The second part of the book is hands-on and introduces the reader to the actual formulations and the evaluation of their performance. Different applications and their corresponding lubricant formulations are considered and tribological test methods are discussed. Finally used oil characterisation and surface characterisation are covered which give the reader an introduction to different methods of characterising used oils and surfaces, respectively. Key features: Combines chemistry and tribology of lubricants into one unified approach Covers the fundamental theory, describing lubricant properties as well as base fluids and additives Contains practical information on the formulations of lubricants and evaluates their performance Considers applications of lubricants in hydraulics, gears and combustion engines Lubricants: Introduction to Properties and Performance is a comprehensive reference for industry practitioners (tribologists, lubricant technicians, and lubricant chemists, etc) and is also an excellent source of information for graduate and undergraduate students.
Lubricants and Waxes: From Basics to Applications
by Dhananjoy GhoshThis book covers chemistry of lubricants and waxes up to technologies applied for their commercial production including technologies in commercial operation. Grease as a lubricant in solid form including various formulations characterizing grease and liquid lubricants has been extensively covered. The environment impacts of the processes along with environment friendly processes developed have also been covered along with data in the book. To make the book more practical, various plants’ operating conditions have been provided as a part of case studies. Features: Provides updated information on the process, technologies, and application especially for production of Group-II and III base oils. Covers theory behind the processes including stoichiometry of chemical reactions, physical and chemical structures, and theoretical text explanations. Includes mathematical equations and data to evaluate the actual operations and/or check design of the plant. Explores practical applications including commercial production of lubricants and waxes. Covers various industrial case studies. This book is aimed at Professionals in industries involving the application of lubricants and waxes.
Lubricants from Renewable Feedstocks
by Lalit Prasad Subhalaxmi Pradhan S. N. Naik Chandu MadankarWritten and edited by a team of industry experts, this exciting new volume covers the field of renewable lubricants, their processing, optimization, end-use application, and their future potential. Biolubricants are a viable alternative to synthetic lubricants because they are produced from organic materials such as plant oils, waste oils and by-products. Renewable biolubricants are the subject of research because of their biodegradability, eco-friendliness, and favorable socioeconomic consequences to counteract imitations of synthetic lubricants. Biolubricants have thus emerged as an ideal substitute for mineral oil-based lubricants, as significant economic and environmental acceptability has been received over the last few decades and it has been estimated that there would be a further steady growth in its demand over the next few decades. Furthermore, biolubricants’ high-quality lubricating properties, high load carrying ability, long service life, and fast biodegradability have expanded the recent interest. These lubricants can be derived from different sources of vegetable oils, non-edible oils, waste cooking oils (WCO) and microbe-derived oils. Among all these sources, the use of WCOs and microbe-derived oils have received immense interest and provide superior quality biolubricants. This outstanding new volume covers the prospects and processing of feedstocks for biolubricants, extraction techniques, new advancements in the field of bio-based lubricants, epoxide lubricants, hydrogenated lubricants, microbial-based biolubricants, nano-biolubricants, polyester-based biolubricants, lubricants from waste oils and waste materials, its economic and environmental acceptability and biorefinery approaches. The book will be helpful to industry professionals and engineers of all types, students, and other stakeholders working in the field of lubricant, chemical engineering, mechanical engineering and material science, tribological sectors and biorefinery industries. It will also be of great interest to new start-up companies working in the area of processing feedstocks for biolubricant production and end use application, biorefineries, valorization of biolubricant waste, and in the recycling industries.
Lubricating Polymer Surfaces
by Yoshikimi UyamaA lubricating polymer surface is important, especially in biomedical technologies. Low-friction surfaces enable easy insertion and removal of devices from patients. Earlier approaches were mostly simple applications involving lubricants such as lidocaine jelly, silicone oil, or non-permanent coating with low-friction materials such as polyethylene or fluoroplastics. However, these substances cannot maintain a high degree of slipperiness for the required duration of time. This book describes the principle of lubrication, outlines a variety of methods for attaining a lubricous surface, and describes the characteristics and properties of such lubricous surfaces.
Lubrication and Maintenance of Industrial Machinery: Best Practices and Reliability
by Ian MuehlenhausA-Z Guide for Maximum Cost Reduction and Increased Equipment Reliability To remain globally competitive, today's manufacturing operations have greatly improved, but there is one last link in the advancement evolution. The reliability of manufacturing equipment must be improved in order to maximize the productive life of the equipment, eliminate uns
Lubrication Degradation: Getting into the Root Causes (Reliability, Maintenance, and Safety Engineering)
by Sanya Mathura Robert J. LatinoThis book combines the topics of Root Cause Analysis (RCA) and Lubrication Degradation Mechanisms (LDM) with the goal of allowing the reader to develop the disciplined thought process for getting to the root causes of each of the degradation mechanisms. This new way of thinking can be applied to other areas within their facility to mitigate or eliminate any future recurrence. Lubrication Degradation: Getting into the Root Causes strives to break down the complex topic of Lubrication Degradation into its six most common failure mechanisms. It presents the mechanisms as manageable components and then teaches the reader how to identify the typical root causes associated with each failure mechanism. The main aim of this book is to get the audience to look past the physical root causes and really unearth the underlying human and/or systemic roots to prevent recurrence of these types of failures. The book offers a field-proven and practical root cause analysis approach. An ideal practical book for industry professionals involved with Plant Operations, Engineering, Management, Maintenance, Reliability, Quality, and also useful for Technicians.
Lubrication Degradation Mechanisms: A Complete Guide (CRC Press Focus Shortform Book Program)
by Sanya MathuraIn industry, owners, engineers and workers have struggled with lubricant degradation and its effects on their equipment. The purpose of Lubrication Degradation Mechanisms: A Complete Guide is to help personnel to understand the reasons behind the degradation of their lubricant, determine methods to identify the onset of degradation and reduce or eliminate lubricant degradation within their equipment. One of the most common forms of lubricant degradation is oxidation. However, this is not the only method by which a lubricant degrades. By understanding the differences between degradation patterns, personnel can employ specific tasks / tests to aid in their identification of the type of degradation and the factors responsible. The aim of this book is to educate facility personnel on the methods of degradation and ways in which it can be reduced or eliminated while keeping an eye on the cost of operation.
Lubrication Fundamentals, Revised and Expanded
by Don M. Pirro Martin Webster Ekkehard DaschnerCareful selection of the right lubricant(s) is required to keep a machine running smoothly. Lubrication Fundamentals, Third Edition, Revised and Expanded describes the need and design for the many specialized oils and greases used to lubricate machine elements and builds on the tribology and lubrication basics discussed in previous editions. <P><P>Utilizing knowledge from leading experts in the field, the third edition covers new lubrication requirements, crude oil composition and selection, base stock manufacture, lubricant formulation and evaluation, machinery and lubrication fundamentals, and environmental stewardship. The book combines lubrication theory with practical knowledge, and provides many useful illustrations to highlight key industrial, commercial, marine, aviation, and automotive lubricant applications and concepts. All previous edition chapters have been updated to include new technologies, applications, and specifications that have been introduced in the past 15 years. <P><P>What’s New in the Third Edition: <Li>Adds three new chapters on the growing renewable energy application of wind turbines, the impact of lubricants on energy efficiency, and best practice guidelines on establishing an in-service lubricant analysis program <Li>Updates API, SAE, and ACEA engine oil specifications, descriptions of new engine oil tests, impact of engine and fuel technology trends on engine oil <Li>Includes the latest environmental lubricant tests, definitions, and labelling programs <Li>Compiles expert information from ExxonMobil publications and the foremost international equipment builders and industry associations <Li>Covers key influences impacting lubricant formulations and technology <Li>Offers data on global energy demand and interesting statistics such as the worldwide population of nuclear reactors, wind turbines, and output of hydraulic turbines <Li>Presents new sections on the history of synthetic lubricants and hazardous chemical labeling for lubricants <P><P>Whether used as a training guide for industry novices, a textbook for students to understand lubrication principles, or a technical reference for experienced lubrication and tribology professionals, Lubrication Fundamentals, Third Edition, Revised and Expanded is a "must read" for maintenance professionals, lubricant formulators and marketers, chemists, and lubrication, surface, chemical, mechanical, and automotive engineers.
Lubrication in Practice
by W. L. RobertsonThis book will appeal to a broad range of engineers and managers in all sectors of manufacturing engineering, power generation and transport. Drawing on their specialist experience and knowledge, the many contributors show how the careful application of correct lubrication can lead to improved productivity, longer plant and equipment life and higher profits. Throughout the emphasis is on showing what lubricants can do, and how they can best be used. After introductory chapters that summarise the basic theory and the general types and properties of lubricants, there follow eleven chapters that cover such specific applications as diesel and petrol engines, hydraulics, compressors, machine tools and cutting oils. The last two chapters discuss the storage and handling of lubricants, and lubrication planning. The majority of the authors and editors, have worked for Esso Petroleum Company Limited and have a unique range of experience in this area. Many of the authors have contrbuted to advances in techniques for imrproved lubrication in their specialist areas.
Lubrication of Electrical and Mechanical Components in Electric Power Equipment
by Bella H. ChudnovskyLubrication of Electrical and Mechanical Components in Electric Power Equipment presents an analysis of multiple applications of lubricants in the power industry for both electrical and mechanical parts. One of the key features of this book includes a look at the use of lubricants for surfaces of electrical and mechanical parts protection from mechanical wear and friction. Also included are examples of degradation due to fretting, as well as corrosion protection when lubricant is a barrier between metallic surfaces and atmospheric pollutants. This book analyzes the effects of chemical composition and consistency (fluids, greases, solid lubricants) and the durability of lubricants in regard to various types of contacts and mechanical parts material, design and load. Focused on the importance of carefully choosing the lubricants to maintain a stable contact resistance; preserve the physical integrity of the contact surface; and extend the useful life of mechanical parts, such as bearings, the author presents an exhaustive list of lubricants manufacturers and products recommended for use in the electrical industry.
Lubrication Strategies and Tips: How to “Kick-start” any Lubrication Program
by Kenneth E. BannisterThis book is designed to help you navigate the complexities of lubrication with knowledge, diligence, and a commitment to optimal performance. Lubrication has always been colored with the incorrect perception that its seeming simplicity and inexpensive nature can be successfully managed with little or no knowledge or training.Structured into eight chapters, each one is designed to address specific challenges encountered in the practical lubrication of machine assets. Whether you’re just starting out or seeking to refine existing practices, you’ll discover actionable tips within each chapter, serving as springboards for immediate success in your lubrication endeavors.Drawing from over three decades of hands-on experience working across diverse industries, the strategies and tips presented here have been rigorously tested and proven effective. Each chapter focuses on specific areas known to deliver the greatest success when implemented.This guidebook will be a trusted companion offering guidance and support and empowering you to develop and implement a best practice lubrication management program in your organization.
Luciana: Out Of This World (American Girl: Girl of the Year 2018 #1)
by Erin Teagan Lucy TrumanGet to know American Girl's 2018 Girl of the Year, Luciana, in this first book in her series! Luciana is over the moon—she's going to Space Camp! But when she's picked to lead her team in a robot challenge, instead of rocketing her crew to success she steers them straight into trouble. After that, her teammates don't trust her. In fact, Luci's pretty sure they don't even like her. It's great to be good at science—but Luci learns that it's not enough. If she's ever going to make it to Mars, she's got to be someone her crew can depend on, no matter what.
Luciana: Braving The Deep (girl Of The Year 2018, Bk. 2) (American Girl: Girl of the Year 2018 #2)
by Erin Teagan Lucy TrumanIn her second novel, Luciana is off to youth astronaut training camp! She hopes to be chosen to dive to an underwater habitat where real astronauts train for life in space. But when Luci accuses her diving partner of sabotage, no one believes her and her chances of making the diving team sink fast. Things hit rock bottom when Luci has an underwater crisis. Suddenly, making the dive team isn’t her biggest worry. She’ll have to conquer her fears if she ever wants to make it to Mars. If she can’t, will she have to kiss her dreams of becoming an astronaut good-bye?