Aerothermal Analysis and Design of the Gravity Recovery and Climate Experiment (GRACE) Spacecraft PDF Download
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Author: Daniel D. Mazanek
Publisher:
ISBN:
Category : Aerothermodynamics
Languages : en
Pages : 50
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Book Description
Author: Daniel D. Mazanek
Publisher:
ISBN:
Category : Aerothermodynamics
Languages : en
Pages : 50
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Book Description
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781720374688
Category :
Languages : en
Pages : 48
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Book Description
The Gravity Recovery and Climate Experiment (GRACE) primary mission will be performed by making measurements of the inter-satellite range change between two co-planar, low altitude near-polar orbiting satellites. Understanding the uncertainties in the disturbance environment, particularly the aerodynamic drag and torques, is critical in several mission areas. These include an accurate estimate of the spacecraft orbital lifetime, evaluation of spacecraft attitude control requirements, and estimation of the orbital maintenance maneuver frequency necessitated by differences in the drag forces acting on both satellites. The FREEMOL simulation software has been developed and utilized to analyze and suggest design modifications to the GRACE spacecraft. Aerodynamic accommodation bounding analyses were performed and worst-case envelopes were obtained for the aerodynamic torques and the differential ballistic coefficients between the leading and trailing GRACE spacecraft. These analyses demonstrate how spacecraft aerodynamic design and analysis can benefit from a better understanding of spacecraft surface accommodation properties, and the implications for mission design constraints such as formation spacing control.Mazanek, Daniel D. and Kumar, Renjith R. and Qu, Min and Seywald, HansLangley Research CenterAEROTHERMODYNAMICS; DESIGN ANALYSIS; GRAVITATION; CLIMATE; SPACECRAFT DESIGN; THERMAL ANALYSIS; ATTITUDE CONTROL; ORBITAL LIFETIME; SPACECRAFT CONTROL; AERODYNAMIC DRAG; DRAG; TORQUE; ORBITAL MANEUVERS; ARTIFICIAL SATELLITES; COMPUTERIZED SIMULATION; MISSION PLANNING; SOLAR FLUX; PITCH (INCLINATION); PROPELLANT CONSUMPTION; ATMOSPHERIC DENSITY; METEOROLOGY
Author:
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ISBN:
Category : Government publications
Languages : en
Pages : 938
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 162
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Author: T.A. Heppenheimer
Publisher: Courier Dover Publications
ISBN: 0486834514
Category : Technology & Engineering
Languages : en
Pages : 355
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Book Description
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.
Author: Institute of Medicine
Publisher: National Academies Press
ISBN: 0309170311
Category : Science
Languages : en
Pages : 317
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Book Description
Safe Passage: Astronaut Care for Exploration Missions sets forth a vision for space medicine as it applies to deep space voyage. As space missions increase in duration from months to years and extend well beyond Earth's orbit, so will the attendant risks of working in these extreme and isolated environmental conditions. Hazards to astronaut health range from greater radiation exposure and loss of bone and muscle density to intensified psychological stress from living with others in a confined space. Going beyond the body of biomedical research, the report examines existing space medicine clinical and behavioral research and health care data and the policies attendant to them. It describes why not enough is known today about the dangers of prolonged travel to enable humans to venture into deep space in a safe and sane manner. The report makes a number of recommendations concerning NASA's structure for clinical and behavioral research, on the need for a comprehensive astronaut health care system and on an approach to communicating health and safety risks to astronauts, their families, and the public.
Author:
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Category : Aeronautics
Languages : en
Pages : 716
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 132
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 410
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Author: Malcolm Macdonald
Publisher: Springer
ISBN: 3642411010
Category : Technology & Engineering
Languages : en
Pages : 728
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Book Description
This comprehensive handbook provides an overview of space technology and a holistic understanding of the system-of-systems that is a modern spacecraft. With a foreword by Elon Musk, CEO and CTO of SpaceX, and contributions from globally leading agency experts from NASA, ESA, JAXA, and CNES, as well as European and North American academics and industrialists, this handbook, as well as giving an interdisciplinary overview, offers, through individual self-contained chapters, more detailed understanding of specific fields, ranging through: · Launch systems, structures, power, thermal, communications, propulsion, and software, to · entry, descent and landing, ground segment, robotics, and data systems, to · technology management, legal and regulatory issues, and project management. This handbook is an equally invaluable asset to those on a career path towards the space industry as it is to those already within the industry.
