Lunar Far-side Communication Satellites PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Lunar Far-side Communication Satellites PDF full book. Access full book title Lunar Far-side Communication Satellites by P. E. Schmid. Download full books in PDF and EPUB format.
Author: P. E. Schmid
Publisher:
ISBN:
Category : Artificial satellites
Languages : en
Pages : 28
Get Book Here
Book Description
Author: P. E. Schmid
Publisher:
ISBN:
Category : Artificial satellites
Languages : en
Pages : 28
Get Book Here
Book Description
Author: Jeffrey Ralph Kurland
Publisher:
ISBN:
Category : Artificial satellites in telecommunication
Languages : en
Pages : 211
Get Book Here
Book Description
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781720450795
Category :
Languages : en
Pages : 70
Get Book Here
Book Description
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: Christopher W. Brunner
Publisher: BiblioGov
ISBN: 9781289146177
Category :
Languages : en
Pages : 72
Get Book Here
Book Description
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.
Author: United States National Aeronautics and
Publisher: Franklin Classics Trade Press
ISBN: 9780344563126
Category :
Languages : en
Pages : 358
Get Book Here
Book Description
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: Leonard David (Space journalist)
Publisher: National Geographic Books
ISBN: 1426217587
Category : Science
Languages : en
Pages : 292
Get Book Here
Book Description
The next frontier in space exploration is Mars, the red planet--and human habitation of Mars isn't much farther off. Now the National Geographic Channel goes years fast-forward with "Mars," a six-part series documenting and dramatizing the next 25 years as humans land on and learn to live on Mars. This companion book to the series explores the science behind the mission and the challenges awaiting those brave individuals. Filled with vivid photographs taken on Earth, in space, and on Mars; arresting maps; and commentary from the world's top planetary scientists, this fascinating book will take you millions of miles away--and decades into the future--to our next home in the solar system.
Author: Leonard David
Publisher: National Geographic Books
ISBN: 1426220065
Category : Science
Languages : en
Pages : 260
Get Book Here
Book Description
Veteran space journalist digs into the science and technology--past, present, and future--central to our explorations of Earth's only satellite, the space destination most hotly pursued today. In these rich pages, veteran science journalist Leonard David explores the moon in all its facets, from ancient myth to future "Moon Village" plans. Illustrating his text with maps, graphics, and photographs, David offers inside information about how the United States, allies and competitors, as well as key private corporations like Moon Express and Jeff Bezos's Blue Origin, plan to reach, inhabit, and even harvest the moon in the decades to come. Spurred on by the Google Lunar XPRIZE--$20 million for the first to get to the moon and send images home--the 21st-century space race back to the moon has become more urgent, and more timely, than ever. Accounts of these new strategies are set against past efforts, including stories never before told about the Apollo missions and Cold War plans for military surveillance and missile launches from the moon. Timely and fascinating, this book sheds new light on our constant lunar companion, offering reasons to gaze up and see it in a different way than ever before.
Author:
Publisher:
ISBN:
Category : Artificial satellites
Languages : en
Pages :
Get Book Here
Book Description
Given the absence of an orbital system to communicate from the far side of the Moon, it is likely that such a system shall be needed in the near future with the continued interest in lunar exploration and utilization. A strategy for a long-term libration orbit at the Earth-Moon L2 point is developed. This strategy allows for uninterrupted two-way communication between the Earth and the far side of the Moon and vice versa while also maintaining low fuel costs, thus increasing the duration of possible missions. A scenario was created in STK that created such an orbit. The results of the scenario predict a total station keeping delta-V cost of only 3.23 m/s for a satellite to stay in the vicinity of the EML2 point for five years.
Author: Paul D. Spudis
Publisher: Smithsonian Institution
ISBN: 1588345033
Category : Science
Languages : en
Pages : 254
Get Book Here
Book Description
While the Moon was once thought to hold the key to space exploration, in recent decades, the U.S. has largely turned its sights toward Mars and other celestial bodies instead. In The Value of the Moon, lunar scientist Paul Spudis argues that the U.S. can and should return to the moon in order to remain a world leader in space utilization and development and a participant in and beneficiary of a new lunar economy. Spudis explores three reasons for returning to the Moon: it is close, it is interesting, and it is useful. The proximity of the Moon not only allows for frequent launches, but also control of any machinery we place there. It is interesting because recorded deep on its surface and in its craters is the preserved history of the moon, the sun, and indeed the entire galaxy. And finally, the moon is useful because it is rich with materials and energy. The moon, Spudis argues, is a logical base for further space exploration and even a possible future home for us all. Throughout his work, Spudis incorporates details about man's fascination with the moon and its place in our shared history. He also explores its religious, cultural, and scientific resonance and assesses its role in the future of spaceflight and our national security and prosperity.
Author: Michael Dumiak
Publisher: Black Dog Press
ISBN: 9781910433591
Category : Art
Languages : en
Pages : 192
Get Book Here
Book Description
Woods and The Sea: Estonian Design and the Virtual Frontier' explores how Estonian designers have found ways to stoke creative spirit and forge distinctive goods, by their sense of place and historical interests. As a small nation on the Baltic coast, Estonia has acted as a port between Eastern Europe and Russia. In a small and often turbulent environment, its designers engage every aspect of Estonian culture, from stern Soviet orthodoxy to whirlwind globalisation, to a wired and forward-thinking social nature, to the constants of seaside life, and to mushroom hunting in the deep woods. 'Woods and The Sea' presents the stories and personalities of Estonian design and its distinctive style by taking the reader to its sources. 'Woods and the Sea' is structured in three parts; a long-form narrative portrait of Estonian designers, and the development of a distinct style, followed by essays exploring the history of Estonian design, and finally the current situation and future prospects of Estonian design.
