Download or read book Mars Flyer Rocket Propulsion Risk Assessment Kaiser Marquardt Testing written by and published by . This book was released on 2001 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mars Flyer Rocket Propulsion Risk Assessment Kaiser Marquardt Testing written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-03 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the investigation of a 10-N, bipropellant thruster, operating at -40 C, with monomethylhydrazine (MMH) and 25% nitric oxide in nitrogen tetroxide (MON-25). The thruster testing was conducted as part of a risk reduction activity for the Mars Flyer, a proposed mission to fly a miniature airplane in the Martian atmosphere. Testing was conducted using an existing thruster, designed for MMH and MON-3 propellants. The nitric oxide content of MON-3 was increased to 25%, to lower its freezing point to -55 C. The thruster was conditioned, along with the propellants, to temperature prior to hot firing. Thruster operating parameters included oxidizer-to-fuel mixture ratios of 1.6 to 2.7 and inlet pressure ranging from 689 to 2070 kPa. The test matrix consisted of many 10-second firings and several 60-, 300-, 600-, and 1200-second firings, as well as pulse testing. The thruster successfully accumulated nearly 10,000 seconds of operation without failure, at temperatures ranging from -40 C to 22 C. At nominal inlet pressures, the ignition delay was comparable to MMH/MON-3 operation. The optimal performance for the 8.9-N thruster was determined to be at a mixture ratio of 1.93 with an average specific impulse of 298 sec.Marquardt, KaiserGlenn Research CenterLIQUID ROCKET PROPELLANTS; PERFORMANCE TESTS; OXIDIZERS; NITROGEN TETROXIDE; MARS ATMOSPHERE; ROCKET ENGINES; FAILURE; ACCUMULATIONS; FLYING PERSONNEL; INLET PRESSURE; MELTING POINTS; MINIATURIZATION; MONOMETHYLHYDRAZINES; NITRIC OXIDE; SPECIFIC IMPULSE
Download or read book Comparison of Mars aircraft propulsion systems written by and published by DIANE Publishing. This book was released on with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Overview of Propulsion Systems for a Mars Aircraft written by and published by . This book was released on 2001 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Facing the Heat Barrier written by T.A. Heppenheimer and published by Courier Dover Publications. This book was released on 2018-09-12 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume from The NASA History Series presents an overview of the science of hypersonics, the study of flight at speeds at which the physics of flows is dominated by aerodynamic heating. The survey begins during the years immediately following World War II, with the first steps in hypersonic research: the development of missile nose cones and the X-15; the earliest concepts of hypersonic propulsion; and the origin of the scramjet engine. Next, it addresses the re-entry problem, which came to the forefront during the mid-1950s, showing how work in this area supported the manned space program and contributed to the development of the orbital shuttle. Subsequent chapters explore the fading of scramjet studies and the rise of the National Aerospace Plane (NASP) program of 1985–95, which sought to lay groundwork for single-stage vehicles. The program's ultimate shortcomings — in terms of aerodynamics, propulsion, and materials — are discussed, and the book concludes with a look at hypersonics in the post-NASP era, including the development of the X-33 and X-34 launch vehicles, further uses for scramjets, and advances in fluid mechanics. Clearly, ongoing research in hypersonics has yet to reach its full potential, and readers with an interest in aeronautics and astronautics will find this book a fascinating exploration of the field's history and future.
Download or read book Mars Flyer Rocket Propulsion Risk Assessment ARC Testing written by and published by . This book was released on 2001 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Cognitive Psychology of Mass Communication written by Richard Jackson Harris and published by Routledge. This book was released on 2009-05-19 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this fifth edition of A Cognitive Psychology of Mass Communication, author Richard Jackson Harris continues his examination of how our experiences with media affect the way we acquire knowledge about the world, and how this knowledge influences our attitudes and behavior. Presenting theories from psychology and communication along with reviews of the corresponding research, this text covers a wide variety of media and media issues, ranging from the commonly discussed topics – sex, violence, advertising – to lesser-studied topics, such as values, sports, and entertainment education. The fifth and fully updated edition offers: highly accessible and engaging writing contemporary references to all types of media familiar to students substantial discussion of theories and research, including interpretations of original research studies a balanced approach to covering the breadth and depth of the subject discussion of work from both psychology and media disciplines. The text is appropriate for Media Effects, Media & Society, and Psychology of Mass Media coursework, as it examines the effects of mass media on human cognitions, attitudes, and behaviors through empirical social science research; teaches students how to examine and evaluate mediated messages; and includes mass communication research, theory and analysis.
Download or read book Small Boats Weak States Dirty Money written by Martin N. Murphy and published by . This book was released on 2009 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many believe that pirates and other water-bound terrorists present a significant threat to international maritime security. Testing the validity of this claim, Martin N. Murphy scrutinizes recent incidents of maritime terrorism and locates the commonalities between pirates and maritime terrorists that enable them to commit their extensive crimes. Murphy's research opens up surprising sites of contact between pirates and wider criminal networks, organizations that pursue their corrupt agendas not only on sea but also on land. It is these relationships, Murphy argues, that bring about the destabilization of states and regions in which piracy occurs. Murphy's most significant revelation is the way in which maritime criminality may disguise insurgent and terrorist activity, allowing such actors greater freedom to maneuver. Although these acts currently rank as a low-level threat, priacy feeds off of political upheaval. Before they can evolve into a truly powerful and dangerous force, however, maritime terrorists and insurgents will have to overcome significant operational and technical issues. They must also capture the attention of an international audience by committing atrocities at sea that are as devastating as those committed on land.
Download or read book Information Innovation and Impacts written by John de la Mothe and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: Information, Innovation and Impacts - a joint project between the Program of Research in International Management and Economy (PRIME) at the University of Ottawa and Statistics Canada - brings together economic, social and statistical views of the impacts of the innovative uses of information. It examines the costs as well as the benefits of rapidly expanding availability of data, of information, and of codified knowledge, and it provides suggestions for future work and research. This project fits into an on-going research program at Statistics Canada to develop indicators for science and technology (S&T) in a more coherent manner, and it fits into the research program of PRIME to better understand the dynamics of innovation in an information economy. Together, Statistics Canada and PRIME strive to tell the story of the activities in S&T systems, their interactions, and the outcomes as actors go about the generation, transmission, or mediation of knowledge, information, and of data, as part of the effective functioning of the system.
Download or read book The Experiment Station written by and published by . This book was released on 1888 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book First CHAMP Mission Results for Gravity Magnetic and Atmospheric Studies written by Christoph Reigber and published by Springer Science & Business Media. This book was released on 2012-09-07 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1995, the German Space Agency DARA selected the CHAllenging Minisatellite Payload (CHAMP) mission for development under a special support programme for the space industry in the new states of the unified Germany, with the Principal Investigator and his home institution GFZ Potsdam being ultimately responsible for the success of all mission phases. After three years of spacecraft manufactur ing and testing, the satellite was injected successfully into its final, near circular, almost polar and low altitude (450 km) orbit from the cosmodrome Plesetsk in Russia on July 15, 2000. After a nine month commissioning period during which all spacecraft systems and instruments were checked, calibrated and validated, the satellite has been delivering an almost uninterrupted flow of science data since May 2001. Since this date, all science data have been made available to the more than 150 selected co-investigator teams around the globe through an international Announcement of Opportunity. The scientific goals of the CHAMP mission are to gain a better understanding of dynamic processes taking place in the Earth's interior and in the space near Earth. These goals can be achieved by improved observation of the Earth's gravity and magnetic fields and their time variability with high-performance on-board instru mentation and by exploring the structure of the Earth's atmosphere and ionosphere through radio occultation measurements.
Download or read book Pagan and Christian Rome written by Rodolfo Amedeo Lanciani and published by . This book was released on 1892 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Social Protest Violence Terror in Nineteenth Twentieth Century Europe written by Gerhard Hirschfeld and published by Springer. This book was released on 1982-11-25 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Social Robots Technological Societal and Ethical Aspects of Human Robot Interaction written by Oliver Korn and published by Springer. This book was released on 2019-07-01 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: Social robots not only work with humans in collaborative workspaces – we meet them in shopping malls and even more personal settings like health and care. Does this imply they should become more human, able to interpret and adequately respond to human emotions? Do we want them to help elderly people? Do we want them to support us when we are old ourselves? Do we want them to just clean and keep things orderly – or would we accept them helping us to go to the toilet, or even feed us if we suffer from Parkinson’s disease? The answers to these questions differ from person to person. They depend on cultural background, personal experiences – but probably most of all on the robot in question. This book covers the phenomenon of social robots from the historic roots to today’s best practices and future perspectives. To achieve this, we used a hands-on, interdisciplinary approach, incorporating findings from computer scientists, engineers, designers, psychologists, doctors, nurses, historians and many more. The book also covers a vast spectrum of applications, from collaborative industrial work over education to sales. Especially for developments with a high societal impact like robots in health and care settings, the authors discuss not only technology, design and usage but also ethical aspects. Thus this book creates both a compendium and a guideline, helping to navigate the design space for future developments in social robotics.
Download or read book Thrilling Cities written by Ian Fleming and published by Pickle Partners Publishing. This book was released on 2017-07-11 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: ‘On November 2nd armed with a sheaf of visas...one suitcase...and my typewriter, I left humdrum London for the thrilling cities of the world...’ In 1959, Ian Fleming, the creator of James Bond, was commissioned by the Sunday Times to explore fourteen of the world’s most exotic cities. Fleming saw it all with a thriller writer’s eye. From Hong Kong to Honolulu, New York to Naples, he left the bright main streets for the back alleys, abandoning tourist sites in favour of underground haunts, and mingling with celebrities, gangsters and geishas. The result is a series of vivid snapshots of a mysterious, vanished world.
Download or read book 47th Bombardment Group L written by and published by Turner Publishing Company. This book was released on 1996 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 47th Bomb Group (L) contained the 84th, 85th, 86th, and 97th squadrons, plus Headquarters.
Download or read book The Cassini Huygens Visit to Saturn written by Michael Meltzer and published by Springer. This book was released on 2015-01-02 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cassini-Huygens was the most ambitious and successful space journey ever launched to the outer Solar System. This book examines all aspects of the journey: its conception and planning; the lengthy political processes needed to make it a reality; the engineering and development required to build the spacecraft; its 2.2-billion mile journey from Earth to the Ringed Planet and the amazing discoveries from the mission. The author traces how the visions of a few brilliant scientists matured, gained popularity and eventually became a reality. Innovative technical leaps were necessary to assemble such a multifaceted spacecraft and reliably operate it while it orbited a planet so far from our own. The Cassini-Huygens spacecraft design evolved from other deep space efforts, most notably the Galileo mission to Jupiter, enabling the voluminous, paradigm-shifting scientific data collected by the spacecraft. Some of these discoveries are absolute gems. A small satellite that scientists once thought of as a dead piece of rock turned out to contain a warm underground sea that could conceivably harbor life. And we now know that hiding under the mist of Saturn’s largest moon, Titan, is a world with lakes, fluvial channels, and dunes hauntingly reminiscent of those on our own planet, except that on Titan, it’s not water that fills those lakes but hydrocarbons. These and other breakthroughs illustrate why the Cassini-Huygens mission will be remembered as one of greatest voyages of discovery ever made.
