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I Når Vi Rejser Til Mars møder vi journalisten Laura, der har trukket stikket fra den bekvemmelige og moderne tilværelse i byen og i stedet er flyttet ud i et forfaldent hus uden strøm i de skånske skove. Laura prøver ihærdigt at få sin økonomi til at hænge bedre sammen ved at skrive en økokritisk artikelserie, synkront med at hun forsøger at genfinde roen i skovens uberørte steder. Men allermest ønsker Laura at skabe den bedste opvækst for datteren Bea, en opvækst tæt på naturen. Problemet er at ingenting hun gør, ser ud til at virke: ”Laura troede det gik op her. Hun troede, det ville være godt for Bea at komme til noget lidt mere civiliseret, da hun skulle begynde i skole. Hun tog fejl. Bea har det overhovedet ikke godt. Man kan heldigvis fortryde. Vende om. Vende tilbage.” Når Vi Rejser Til Mars er en samtidsroman, der skildrer flere af nutidens største problematikker, både fra det store kollektive synspunkt; hvad fremtiden vil bringe os som menneskehed, hvis klimakrisens konsekvenser forsætter i sin nedadgående spiral, der i sidste ende vil betyde Jordens endelige undergang. Men samtidigt er det også en roman, der fremstiller menneskets ældste urinstink i moderne rammer; forholdet mellem mor og barn, og den uudtalte problematik når det forventede relationsglansbillede ikke stemmer overens med virkelighedens, når gode intentioner ikke altid er nok, når man skal skabe en lykkelig tilværelse for ens barn og en selv. Maja Elverkilde debuterede som forfatter i 2008 med den anmelderroste novellesamling Alt det der er mit. I 2011 blev hun selv mor og skiftede kort tid efter sin lejlighed i København ud med et primitivt hus i Sverige, hvor hun boede alene med sin dreng. I 2014 udkom opfølgeren Det man dør af og i 2017 kom romandebuten Den slags skal gøres i dagslys. Når Vi Rejser Til Mars er Elverkildes første udgivelse på Forlaget Escho.
NASA's Mars 2020 mission successfully landed the Perseverance rover in Jezero crater on February 18, 2021.This book provides the definitive pre-landing documentation of the Mars 2020 mission, its scientific payload elements, and its exploration area.The chapters in this volume include detailed descriptions of: The Perseverance mission, and its relationship to a possible Mars Sample Return campaign; The geology of the mission's exploration environment in Jezero crater; and The purpose, design and operation of all seven instruments aboard the rover (Mastcam-Z, SHERLOC, RIMFAX, Supercam, MOXIE, PIXL, and MEDA) as well as the engineering cameras and the Mars helicopter Ingenuity. NASA's ambitious Mars 2020 mission extends a long arc of Martian exploration by seeking evidence that life may once have existed on Mars, and by preparing a collection of samples for possible return to Earth by a future mission. Mars 2020 will also enable future exploration by characterizing modern weather conditions and by demonstrating new technologies.Previously published in Space Science Reviews in the Topical Collection "The Mars 2020 Mission"
This book introduces readers to a range of jamming principles and techniques for new radars, combining a wealth of theoretical analyses, test data, calculations, and charts. With rapid advances in military radar technology, new types of radar are constantly emerging. Therefore, there is an urgent need to carry out effective research on these new radars and to develop corresponding jamming techniques.The main topics covered include development of radar and radar countermeasures; jamming techniques for synthetic aperture radar; jamming techniques for pulse compression radar; jamming techniques for pulse Doppler radar; general jamming techniques for various radars; analysis and calculation of the effective jamming suppression zone and jamming exposure zone for radars installed on different platforms; jamming techniques for phased array radar; jamming techniques for dual (multiple) static radar; and solutions for high equivalent radiation power, high reception sensitivity, and transceiver isolation in jammer design.
This book presents a technical solution to ensuring the noise immunity of navigation systems in civil aviation aircrafts at the stages of their terminal procedures. It highlights instrumental precision approaches to landing and landing in automatic mode using satellite and inertial radio navigation systems and ground-based augmentation used as the primary means, in accordance with the ICAO requirements. The book is intended for engineering and technical specialists engaged in the development, manufacture and operation of on-board radio electronic systems of aircrafts and ground-based radio engineering support for flights, as well as graduate students and senior students of radio engineering specialties. It is also useful for professionals whose activities are related to air traffic control.
Das Buch bietet eine Einführung in die wichtigsten Methoden der Flugkörperlenkung. Im Rahmen eines historischen Abrisses wird die Frage geklärt, was überhaupt unter einem Lenkflugkörper zu verstehen ist. Es folgen Grundbegriffe und Definitionen wie z.B. die der erforderlichen Koordinatensysteme. Die Einbettung des Systems Lenkung in das Gesamtsystem Flugkörper wird beschrieben. Die wichtigsten Lenkverfahren sind die Proportionalnavigation, die Zieldeckungslenkung und die Raketenlenkung auf der Basis des Required-Velocity-Konzeptes. Jedem der drei Verfahren ist jeweils ein Kapitel gewidmet. Unter der Überschrift "Realisierungsaspekte" geht es um die praktische Umsetzung der Lenkverfahren. Auf oberster Ebene bewerkstelligt die Missionssteuerung das Umschalten in die verschiedenen Phasen der Flugbahn. Zur Auswertung eines Lenkgesetzes muss die Relativgeometrie Flugkörper / Ziel erfasst bzw. geschätzt werden. Dazu gibt es verschiedene Suchkopftechnologien bzw. Schätzverfahren (Kalman-Filter). Fast alle beschriebenen Methoden werden mit Simulationsergebnissen mit einem einfachen Flugkörpermodell veranschaulicht.
This book provides a comprehensive analysis of time-fixed terminal rendezvous around the Earth using chemical propulsion.The book has two main objectives. The first is to derive the mathematics of relative motion in near-circular orbit when subjected to perturbations emanating from the oblateness of the Earth, third-body gravity, and atmospheric drag. The mathematics are suitable for quick trajectory prediction and the creation of computer codes and efficient software to solve impulsive maneuvers and fly rendezvous missions.The second objective of this book is to show how the relative motion theory is applied to the exact precision-integrated, long-duration, time-fixed terminal rendezvous problem around the oblate Earth for the general elliptic orbit case.The contents are both theoretical and applied, with long-lasting value for aerospace engineers, trajectory designers, professors of orbital mechanics, and students at the graduate level and above.
This book analyzes various properties and structures of ice from the point of view to solve problems in civil aviation. The Arctic zone of the Russian Federation, together with large territories of Siberia and the Far East, is a zone, that is insufficiently provided with ground navigation facilities, as well as platforms and airfields for landing aircraft, including in the event of unpredictable situations. However, most of this area, especially in winter, is covered with ice, which can be used to solve this problem. The possibility of using ice sheets for the construction of airfields or the location of ground-based flight support facilities requires careful study and analysis. This book is devoted to the study of the properties and structure of ice, with a view for use in civil aviation to construct ice airfields and the placement of ground-based flight support facilities.
This book presents a methodology for assessing environmental safety in civil aviation. The methodology allows the comparison of different technological processes and evaluates their impact on the environment. At the same time, the medical and demographic indicators for ecologically unfavorable territories are compared with similar indicators in the control (background) territories in the same climatic and geographical zones. This book contains methodological recommendations for the creation of the system for ecology safety in the organizational structures of civil aviation. This book is useful to a wide audience-students of aviation, lecturers, as well as specialists in the field of ecology and those involved in ensuring the necessary ecology requirements at aviation enterprises.
This book examines the issues of ensuring anti-terrorist security of an aviation enterprise, provides a history of terrorism in the aviation sector, and analyzes the legal regulations. This book provides mathematical and mathematical-psychological models for reducing the risk of terrorist threats, which makes it possible to objectively increase the safety of air transport facilities, reduce the likelihood of terrorist attacks, save human lives and prevent significant material losses. The solutions of general humanistic problems proposed in the book-preventing accidents and preserving the world-are an original feature of the book, which allows one to treat it with the necessary attention and interest for the reader. The concept of anti-terrorist security of an aviation enterprise presented in this book has been widely tested and introduced into the activities of leading aviation enterprises, including the Interstate Aviation Committee (IAC), and has been used in the investigation of aviation accidents.This book is written for a wide range of audience associated with ensuring aviation transport security and for the end users of airlines-passengers, in order to expand their knowledge about the reliability of using air transport.
This book presents the design of modular architecture flight simulators. Safe transportation of people and goods is one of the main directions for the development of the world economy. At the same time, in conditions of constantly increasing intensity of air traffic, the actions of people, responsible for piloting aircraft and air traffic control are of particular importance. In this regard, special attention should be paid to the process of training such specialists. This book describes various flight simulators of an aircraft, as well as to assess the impact of various characteristics of aviation simulators on the quality of skills of aviation specialists. The book discusses the following issues:1) method of setting dynamic parameters;2) methods of correction of simulator parameters, according to expert opinions of operating organizations;3) modules of simulators of operation of various aircraft units and flight conditions;4) prospects for the development of aviation simulators;5) collection and evaluation of information in the process of training on aviation simulators.
This book highlights the capabilities and limitations of radar and air navigation. It discusses issues related to the physical principles of an electromagnetic field, the structure of radar information, and ways to transmit it. Attention is paid to the classification of radio waves used for transmitting radar information, as well as to the physical description of their propagation media. The third part of the book addresses issues related to the current state of navigation systems used in civil aviation and the prospects for their development in the future, as well as the history of satellite radio navigation systems. The book may be useful for schoolchildren, interested in the problems of radar and air navigation.
This book analyzes the problems to be solved urgently in the development of launch vehicle control system. The techniques of redundant Inertial Measurement Unit (IMU) reconfiguration and trajectory replanning are proposed aiming at the inertial device failures and power system failures during flight of launch vehicles, respectively. It introduces the background of redundant IMU reconfiguration and trajectory replanning technologies and models of launch vehicle dynamics and redundant strap-down IMUs. The approaches for redundant strap-down IMU fault detection, reconfiguration and trajectory replanning are proposed, putting forward a prospect for the development of launch vehicle control system. The content of this book is concise and highly pragmatic. It could serve as a reference for engineers and researchers engaged in the analysis, design and verification of launch vehicle control systems and also as a reference for graduate students and senior undergraduates majoring in navigation, guidance and control.
This book presents the select proceedings of the 3rd National Aerospace Propulsion Conference (NAPC 2020). It discusses the recent trends in the area of aerospace propulsion technologies covering both air-breathing and non-air-breathing propulsion. The topics covered include state-of-the-art design, analysis and developmental testing of gas turbine engine modules and sub-systems like compressor, combustor, turbine and alternator; advances in spray injection and atomization; aspects of combustion pertinent to all types of propulsion systems and nuances of space, missile and alternative propulsion systems. The book will be a valuable reference for beginners, researchers and professionals interested in aerospace propulsion and allied fields.
This book provides a systematic and standardized approach based on the authors' over 30 years of research experience with weight function methods, as well as the relevant literature. Fracture mechanics has become an indispensable tool for the design and safe operation of damage-tolerant structures in many important technical areas. The stress intensity factor-the characterizing parameter of the crack tip field-is the foundation of fracture mechanics analysis. The weight function method is a powerful technique for determining stress intensity factors and crack opening displacements for complex load conditions, with remarkable computational efficiency and high accuracy.The book presents the theoretical background of the weight function methods, together with a wealth of analytical weight functions and stress intensity factors for two- and three-dimensional crack geometries; many of these have been incorporated into national, international standards and industrial codes of practice. The accuracy of the results is rigorously verified, and various sample applications are provided. Accordingly, the book offers an ideal reference source for graduate students, researchers, and engineers whose work involves fracture and fatigue of materials and structures, who need not only stress intensity factors themselves but also efficient and reliable tools for obtaining them.
The book collects selected papers presented at the 5th International Conference on Aerospace System Science and Engineering (ICASSE 2021), organized by Shanghai Jiao Tong University, China, hosted by Moscow Aviation Institute, Russia. It provides a forum for experts in aeronautics and astronautics to share new ideas and findings. ICASSE conference has been organized annually since 2017 and host in Shanghai, Moscow, and Toronto in turn, where the three regional editors of journal Aerospace Systems are located.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.