Rumforskning

Der er ikke otte, men milliarder af planeter i Universet, og mange af dem ligger i et lunt smørhul, hvor de potentielt kan huse liv. Den opdagelse er en af de største i den moderne astronomi, og vi er kun lige begyndt at forstå, hvad der egentlig gemmer sig derude i kosmos af bizarre kloder. 'Fjerne kloder' beskriver erkendelsesrejsen, fra Giordano Bruno blev brændt på bålet i år 1600 for sin kætterske idé om uendelig mange planeter – og til konstruktionen af små satellitter, som måske kan besøge de nærmeste af disse exoplaneter og lede efter livstegn på dem. Undervejs møder vi forskerne ved fronten, som kigger hinsides solsystemet og kæmper for at besvare det ultimative spørgsmål: Er vi alene?

Mennesket har gennem de sidste mange tusind år altid været optaget af at udforske nyt land. Derfor har vi efterhånden kortlagt det meste af Jorden, men for omkring 60 år siden åbnede en ny verden sig. Da fløj det første menneske ud i rummet, og en helt ny type opdagelsesrejsende så dagens lys. Astronauterne. Astronauter sejler ikke til nye kontinenter i store sejlskibe. I stedet rejser de med raketter tusindvis af kilometer ud i rummet for at finde ud af, hvem vi er, og hvor vi kommer fra.På vores rumrejse i Kristian på sporet af rummet skal vi lande på Månen og bosætte os på Mars. Vi skal se nærmere på hemmelige spionsatellitter og drikke sved for at overleve. Vi skal redde Jorden fra en kæmpeasteroide, rejse i tiden og smage på den underligste rummad.Kristian på sporet af rummet er nummer to selvstændige bog i en helt ny faktaserie for børn, hvor Kristian Gintberg tager ud for at undersøge stort og småt sammen med læserne. Det skal være sjovt at lære, det skal være spændende at suge ny viden til sig. Derfor har Kristian taget sin rygsæk på og drager ud i rummet med sit kamera om halsen og sin nysgerrighed som rejseledsager for udforske de fremmede planeter og finde ud af, om der lever nogle rumvæsner, vi slet ikke kender.Hvert opslag dækker et emne, formidlet i et lettilgængeligt sprog og illustreret både faktuelt og utrolig sjovt af Franck Wagnersens humoristiske streg.Kristian Gintberg (f. 1988) er tekstforfatter, tv-vært og sangskriver. Han startede sin tv-karriere i 2011 som medvært på DRs børneprogram Lille Nørd og har siden været vært på det meget populære Ramajetterne og Ramasjang Mysteriet, ligesom han er en fast del af sommerens Cirkus Summarum.

Hvordan sover man egentlig i rummet? Hvad spiser man? Og hvad gør man, hvis man skal på toilettet? Når man er i rummet, bliver selv helt almindelige, dagligdags ting en udfordring. Man er kommet flere tusind kilometer væk hjemmefra, man er helt ude i universet. Det har krævet den allermest indviklede teknologi og de sejeste raketter at komme derud, og så er det pludselig besværligt bare at drikke et glas vand. Følg med, når Andreas Mogensen, der som den første dansker blev sendt i rummet i 2015, viser os vejen til rummet. Andreas var en ud af 10.000 ansøgere, der fik lov at komme med på ekspeditionen, og vejen dertil var lang – og spændende! Her i bogen kan du læse om, hvad der skal til for at blive en ægte astronaut og måske en dag selv prøve at rejse langt, langt ud i rummet.

Every night, above our heads, a drama of epic proportions is playing out. Diamond planets, zombie stars, black holes heavier than a billion Suns. The cast of characters is extraordinary, and each one has its own incredible story to tell.

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.

For all those who wonder about our bizarre universe, and those who want to overthrow the big bang, this book gives you 'just the facts': the observations that have shaped established ideas and theories. The authors pull back the curtains, and show how cosmology really works.

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.

Learn about commercial spaceflight¿s most successful startup in this fully updated book, which follows the extraordinary feats of engineering and human achievement that have placed SpaceX at the forefront of the launch industry and positioned it as the most likely candidate for transporting humans to Mars.This second edition emphasizes SpaceX's much-hyped manned mission to the Red Planet. With a plethora of new material gathered from 2013 to the present, the text offers the most up-to-date portrait of the maverick band of scientists and engineers producing some of the most spectacular aviation triumphs of the 21st century. Topics covered in this book include: all CRS flights, the challenges of developing retro-propulsion, and the pathway towards realizing the Falcon Heavy and BFR. In addition, the chapters describe SpaceX¿s emphasis on simplicity, low-cost, and reliability, and the methods the company employs to reduce its costs while speeding up decision-making and delivery. Detailing the Falcon 1, Falcon 9 and Falcon Heavy launch vehicles, the book shows how SpaceX is able to offer a full spectrum of light, medium, and heavy lift launch capabilities to its customers and how it is able to deliver spacecraft into any inclination and altitude, from low Earth orbit to geosynchronous orbit to planetary missions. This book is the perfect go-to guide on SpaceX for anybody working or interested in the commercial space arena.

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 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.

The book is a collection of academician Yanzhong Zhang's research papers published in English. It represents the development of aerospace systems engineering and information technology in China over the past 4 decades. Regarded as the crucial reference materials of related disciplines, it falls into three categories, namely, information technique, aeronautical engineering strategy issue of development, as well as PhD thesis.

Sensors and Instrumentation, Aircraft/Aerospace and Energy Harvesting, Volume 7:  Proceedings of the 40th IMAC, A Conference and Exposition on Structural Dynamics, 2020, the seventh 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 Shock & Vibration, Aircraft/Aerospace, Energy Harvesting & Dynamic Environments Testing including papers on:Alternative Sensing & AcquisitionActive ControlsInstrumentationAircraft/Aerospace & Aerospace Testing Techniques Energy Harvesting

This contributed volume presents recent developments in nonlinear dynamics applied to engineering. Specifically, the authors address stability and bifurcation in large-scale, complex rotor dynamic systems; periodic motions and their bifurcations in nonlinear circuit systems, fault diagnosis of complex engineering systems with nonlinear approaches, singularities in fluid-machinery and bifurcation analysis, nonlinear behaviors in rotor dynamic system with multi-mistuned blades, mode localization induced by mistuning in impellers with periodical and cyclic symmetry, and nonlinear behaviors in fluid-structure interaction and their control. These new results will maximize reader understand on the recent progress in nonlinear dynamics applied to large-scale, engineering systems in general and nonlinear rotors and impellers in particular.

This book describes the basic concepts of spacecraft operations for both manned and unmanned missions. The first part of the book provides a brief overview of the space segment. The next four parts deal with the classic areas of space flight operations: mission operations, communications and infrastructure, the flight dynamics system, and the mission planning system. This is followed by a part describing the operational tasks of the various subsystems of a classical satellite in Earth orbit. The last part describes the special requirements of other mission types due to the presence of astronauts, the approach of a satellite to another target satellite, or leaving Earth orbit in interplanetary missions and landing on other planets and moons.The 2nd edition is published seven years after the first edition. It contains four new chapters on flight procedures, the human factors, ground station operation, and software and systems. In addition, several chapters have been extensively expanded. The entire book has been brought up to date and the language has been revised.This book is based on the "e;Spacecraft Operations Course"e; held at the German Space Operations Center. However, the target audience of this book is not only the participants of the course, but also students of technical and scientific courses, as well as technically interested people who want to gain a deeper understanding of spacecraft operations.

Landing gear provides an intriguing and compelling challenge, combining many fields of science and engineering. Designed to guide the interested reader through the fundamentals aircraft wheel, brake and brake control design system, this book presents a specific element of landing gear design in an accessible way. The authors two volume treatise, The Design of Aircraft Landing, was the inspiration for this book. The Design of Aircraft Landing is a landmark work for the industry and utilizes over 1,000 pages to present a complete, in-depth study of each component that must considered when designing an aircrafts landing gear. While recognizing that not everyone may need the entire treatise, Aircraft Wheels, Brakes, and Brake Controls: Key Principles for Landing Gear Design is one of three quick reference guides focusing on one key element of aircraft design and landing gear design. This volume features an overview of brakes, aircraft deceleration, brake sizing, brake design, braking accessories, wheels, brake control as well as brake issues and concerns. R. Kyle Schmidt has over 25 years experience across three countries and has held a variety of variety of engineering roles relating to the development of new landing gears and the sustainment of existing landing gears in service.

Landing gear provides an intriguing and compelling challenge, combining many fields of science and engineering. Designed to guide the interested reader through the key principles of aircraft compatibility with the ground and ground infrastructure (airfields, heliports, etc.), this book presents a specific element of landing gear design in an accessible way. The authors two volume treatise, The Design of Aircraft Landing, was the inspiration for this book. The Design of Aircraft Landing is a landmark work for the industry and utilizes over 1,000 pages to present a complete, in-depth study of each component that must considered when designing an aircrafts landing gear. While recognizing that not everyone may need the entire treatise, Airfield Compatibility: Key Principles for Landing Gear Design is one of three quick reference guides focusing on one key element of aircraft design and landing gear design. This volume centers on how to ensure that the aircraft is compatible with the ground surfaces that it will encounter in use. R. Kyle Schmidt has over 25 years experience across three countries and has held a variety of variety of engineering roles relating to the development of new landing gears and the sustainment of existing landing gears in service.

Landing gear provides an intriguing and compelling challenge, combining many fields of science and engineering. Designed to guide the interested reader through aircraft tire design, selection, and integration to the aircraft landing gear, this book presents a specific element of landing gear design in an accessible way. The authors two volume treatise, The Design of Aircraft Landing, was the inspiration for this book. The Design of Aircraft Landing is a landmark work for the industry and utilizes over 1,000 pages to present a complete, in-depth study of each component that must considered when designing an aircrafts landing gear. While recognizing that not everyone may need the entire treatise, Aircraft Tires: Key Principles for Landing Gear Design is one of three quick reference guides focusing on one key element of aircraft design and landing gear design. This volume features tire construction and terminology, mechanics of pneumatic tires, tire performance and modeling as well reviewing undesirable tire behavior. R. Kyle Schmidt has over 25 years experience across three countries and has held a variety of variety of engineering roles relating to the development of new landing gears and the sustainment of existing landing gears in service.

Scramjet Propulsion Explore the cutting edge of HAP technologies with this comprehensive resource from an international leader in her field Scramjet Propulsion: A Practical Introduction delivers a comprehensive treatment of hypersonic air breathing propulsion and its applications. The book covers the most up-to-date hypersonic technologies, like endothermic fuels, fuel injection and flameholding systems, high temperature materials, and TPS, and offers technological overviews of hypersonic flight platforms like the X-43A, X-51A, and HiFIRE. It is organized around easy-to-understand explanations of technical challenges and provides extensive references for the information contained within. The highly accomplished author provides readers with a fulsome description of the theoretical underpinnings of hypersonic technologies, as well as critical design and technology issues affecting hypersonic air breathing propulsion technologies. The book s combination of introductory theory and advanced instruction about individual hypersonic engine components is ideal for students and practitioners in fields as diverse as hypersonic vehicle and propulsion development for missile defense technologies, launch aerospaceplanes, and civilian transports. Over 250 illustrations and tables round out the material. Readers will also learn from: A thorough introduction to hypersonic flight, hypersonic vehicle concepts, and a review of fundamental principles in hypersonic air breathing propulsion Explorations of the aerothermodynamics of scramjet engines and the design of scramjet components, as well as hypersonic air breathing propulsion combustors and fuels Analyses of dual-mode combustion phenomena, materials structures, and thermal management in hypersonic vehicles, and combined cycle propulsion An examination of CFD analysis, ground and flight testing, and simulation Perfect for researchers and graduate students in aerospace engineering, Scramjet Propulsion: A Practical Introduction is also an indispensable addition to the libraries of engineers working on hypersonic vehicle development seeking a state-of-the-art resource in one of the most potentially disruptive areas of aerospace research today.