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Author : P. E. Schmid
Publisher : Unknown
Page : 28 pages
File Size : 54,5 Mb
Release : 1968
Category : Artificial satellites
ISBN : UIUC:30112106914598
Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
Page : 70 pages
File Size : 54,8 Mb
Release : 2018-09-19
Category : Science
ISBN : 1723822264
In 2003, NASA solicited proposals for a robotic exploration of the lunar surface. Submissions were requested for a lunar sample return mission from the South Pole-Aitken Basin. The basin is of interest because it is thought to contain some of the oldest accessible rocks on the lunar surface. A mission is under study that will land a spacecraft in the basin, collect a sample of rock fragments, and return the sample to Earth. Because the Aitken Basin is on the far side of the Moon, the lander will require a communications relay satellite (CRS) to maintain contact with the Earth during its surface operation. Design of the CRS's orbit is therefore critical. This paper describes a mission design which includes potential transfer and mission orbits, required changes in velocity, orbital parameters, and mission dates. Several different low lunar polar orbits are examined to compare their availability to the lander versus the distance over which they must communicate. In addition, polar orbits are compared to a halo orbit about the Earth-Moon L2 point, which would permit continuous communication at a cost of increased fuel requirements and longer transmission distances. This thesis also examines some general parameters of the spacecraft systems for the mission under study. Mission requirements for the lander dictate the eventual choice of mission orbit. This mission could be the first step in a period of renewed lunar exploration and eventual human landings.Brunner, Christopher W.Langley Research CenterRELAY SATELLITES; SAMPLE RETURN MISSIONS; SATELLITE DESIGN; LUNAR GEOLOGY; STRUCTURAL BASINS; COSTS; LUNAR ROCKS; LUNAR SOIL; ECCENTRIC ORBITS; FLYBY MISSIONS; TIME OF FLIGHT SPECTROMETERS; EARTH-MOON SYSTEM
Author : Robert Willard Farquhar
Publisher : Unknown
Page : 116 pages
File Size : 54,7 Mb
Release : 1971
Category : Artificial satellites in telecommunication
ISBN : UIUC:30112106747303
Author : Anonim
Publisher : Unknown
Page : 464 pages
File Size : 40,6 Mb
Release : 1971
Category : Electronic
ISBN : MINN:31951000846358W
Author : Peter Eckart
Publisher : Herbert Utz Verlag
Page : 256 pages
File Size : 52,9 Mb
Release : 1996
Category : Technology & Engineering
ISBN : 3980392511
Author : Yingmin Jia,Junping Du,Weicun Zhang
Publisher : Springer Nature
Page : 736 pages
File Size : 41,6 Mb
Release : 2019-09-07
Category : Technology & Engineering
ISBN : 9789813296862
This book showcases new theoretical findings and techniques in the field of intelligent systems and control. It presents in-depth studies on a number of major topics, including: Multi-Agent Systems, Complex Networks, Intelligent Robots, Complex System Theory and Swarm Behavior, Event-Triggered Control and Data-Driven Control, Robust and Adaptive Control, Big Data and Brain Science, Process Control, Intelligent Sensor and Detection Technology, Deep learning and Learning Control, Guidance, Navigation and Control of Aerial Vehicles, and so on. Given its scope, the book will benefit all researchers, engineers, and graduate students who want to learn about cutting-edge advances in intelligent systems, intelligent control, and artificial intelligence.
Author : Anonim
Publisher : Unknown
Page : 1338 pages
File Size : 51,8 Mb
Release : 1970
Category : Aeronautics
ISBN : OSU:32435027927870
Author : Robert Willard Farquhar
Publisher : Unknown
Page : 140 pages
File Size : 48,9 Mb
Release : 1970
Category : Artificial satellites
ISBN : UIUC:30112106585414
Author : Zonglin Jiang,Randy S. M. Chue
Publisher : Cambridge University Press
Page : 316 pages
File Size : 43,8 Mb
Release : 2023-10-26
Category : Technology & Engineering
ISBN : 9781009035675
Introducing the state-of-the-art of hypervelocity shock tunnels, this complete reference features a variety of drivers and step-by-step introductions to their theories, physics, methods and testing. This book enables researchers and engineers in aerospace to design and improve wind tunnels that simulate flow qualities of real hypersonic flyers.
Author : Antony Joseph
Publisher : Elsevier
Page : 846 pages
File Size : 54,9 Mb
Release : 2022-11-25
Category : Science
ISBN : 9780323957182
Water Worlds in the Solar System: In Search of Habitable Environments and Life is a comprehensive reference on the formation, availability, habitability potential, and astrobiological implications of water in the Solar System. The book provides understanding of the importance of water on Earth to elucidate potential water and biosignature sources on other bodies in the Solar System. It covers processes involved in the formation of Earth and its Moon, genesis of water on those bodies, events on early Earth, and other processes that are applicable to celestial bodies in the Solar System, directly correlating data available on water on other bodies to over 15 Earth analogue sites. This book forms a comprehensive overview on water in the Solar System, from formation to biosignature and habitability considerations. It is ideal for academics, researchers and students working in the field of planetary science, extraterrestrial water research and habitability potential. Presents a comprehensive reference on water in the Solar System, developing readers’ understanding of the importance and occurrence of water on Earth and beyond, all from an oceanographer’s perspective Contrasts terrestrial analogues in relation to their roles in understanding and exploring ocean worlds and habitability Includes numerous figures, illustrations, tables and videos to help readers better understand concepts covered
Author : United States. National Aeronautics and Space Administration Scientific and Technical Information Division
Publisher : Unknown
Page : 478 pages
File Size : 48,6 Mb
Release : 1968
Category : Aeronautics
ISBN : STANFORD:36105113774298
Author : United States. National Aeronautics and Space Administration. Scientific and Technical Information Division
Publisher : Unknown
Page : 470 pages
File Size : 43,9 Mb
Release : 1969
Category : Aeronautics
ISBN : CORNELL:31924057848859
Author : Ben Bova,Byron Preiss
Publisher : ibooks
Page : 506 pages
File Size : 47,5 Mb
Release : 2010-07-15
Category : Science
ISBN : 9781596876873
Are we alone in this cosmos, or do we yet have to come to terms with the actual existence of alien life? Never before has so much time and concentrated effort been spent by so many scientists and writers in the pursuit of the answer to this fundamental question. In this extraordinary book, major scientists involved in the search for extraterrestrial intelligence known as SETI explain their work and reveal their secret thoughts. Now, in joining them here, are some of the best speculative thinkers, from Arthur C. Clarke and Isaac Asimov to Gregory Benford, who address the major philosophical questions involved. Intriguing, suspense-filled and intense, this book promises to deliver more than just mundane facts and theory.
Author : Anonim
Publisher : Unknown
Page : 512 pages
File Size : 53,8 Mb
Release : 1970
Category : Aerodynamics
ISBN : MINN:31951000846643X
Author : United States. Superintendent of Documents
Publisher : Unknown
Page : 128 pages
File Size : 54,9 Mb
Release : 1968
Category : Government publications
ISBN : UCR:31210023919127
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
