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Author: H. A. Lieske
Publisher:
ISBN:
Category :
Languages : en
Pages : 968
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Book Description
Author: H. A. Lieske
Publisher:
ISBN:
Category :
Languages : en
Pages : 968
Get Book Here
Book Description
Author: A. PETTY
Publisher:
ISBN:
Category :
Languages : en
Pages : 1
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Book Description
A description of several related IBM-7090 Fortran computer programs is presented to provide a fast, accurate, and systematic procedure for determining initial conditions to the differential equations of motion from tracking data, lunar and interplanetary trajectories in n-body space, and satellite ephemeris compilations. (Author).
Author: Jeffrey S. Parker
Publisher: John Wiley & Sons
ISBN: 1118855310
Category : Technology & Engineering
Languages : en
Pages : 452
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Book Description
Based on years of research conducted at the NASA Jet Propulsion Laboratory, Low-Energy Lunar Trajectory Design provides high-level information to mission managers and detailed information to mission designers about low-energy transfers between Earth and the moon. The book answers high-level questions about the availability and performance of such transfers in any given month and year. Low-energy lunar transfers are compared with various other types of transfers, and placed within the context of historical missions. Using this book, designers may reconstruct any transfer described therein, as well as design similar transfers with particular design parameters. An Appendix, “Locating the Lagrange Points,” and a useful list of terms and constants completes this technical reference. Surveys thousands of possible trajectories that may be used to transfer spacecraft between Earth and the moon, including transfers to lunar libration orbits, low lunar orbits, and the lunar surface Provides information about the methods, models, and tools used to design low-energy lunar transfers Includes discussion about the variations of these transfers from one month to the next, and the important operational aspects of implementing a low-energy lunar transfer Additional discussions address navigation, station-keeping, and spacecraft systems issues
Author: H. A. Lieske
Publisher:
ISBN:
Category : Space flight to the moon
Languages : en
Pages : 1
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Book Description
Results are presented of a study of free-flight earth-moon trajectories, which describe the two-dimensional ballistic motion of a vehicle from a standard initial altitude above the earth to impact on the surface of the moon. Trajectories originating at various positions relative to the initial position of the moon are studied to cover the complete spectrum, including retrograde launching. A design transit trajectory is chosen to examine the effect of small variations of initial parameters on the location of the lunar impact point for use in error studies. A hit band of transit trajectories that lead to impact on the moon is computed by varying initial conditions in the vicinity of the design point. Transit trajectories in the vicinity of the design point that miss the moon are studied for use in establishing artificial satellites of the moon. (Author).
Author: Robin Biesbroek
Publisher: Springer
ISBN: 3319269836
Category : Technology & Engineering
Languages : en
Pages : 234
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Book Description
This book provides readers with a clear description of the types of lunar and interplanetary trajectories, and how they influence satellite-system design. The description follows an engineering rather than a mathematical approach and includes many examples of lunar trajectories, based on real missions. It helps readers gain an understanding of the driving subsystems of interplanetary and lunar satellites. The tables and graphs showing features of trajectories make the book easy to understand.
Author: Harold A. Hamer
Publisher:
ISBN:
Category : Artificial satellites
Languages : en
Pages : 64
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Book Description
Author: Edward Belbruno
Publisher: Princeton University Press
ISBN: 1400849195
Category : Science
Languages : en
Pages : 172
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Book Description
When a leaf falls on a windy day, it drifts and tumbles, tossed every which way on the breeze. This is chaos in action. In Fly Me to the Moon, Edward Belbruno shows how to harness the same principle for low-fuel space travel--or, as he puts it, "surfing the gravitational field." Belbruno devised one of the most exciting concepts now being used in space flight, that of swinging through the cosmos on the subtle fluctuations of the planets' gravitational pulls. His idea was met with skepticism until 1991, when he used it to get a stray Japanese satellite back on course to the Moon. The successful rescue represented the first application of chaos to space travel and ushered in an emerging new field. Part memoir, part scientific adventure story, Fly Me to the Moon gives a gripping insider's account of that mission and of Belbruno's personal struggles with the science establishment. Along the way, Belbruno introduces readers to recent breathtaking advances in American space exploration. He discusses ways to capture and redirect asteroids; presents new research on the origin of the Moon; weighs in on discoveries like 2003 UB313 (now named Eris), a dwarf planet detected in the far outer reaches of our solar system--and much more. Grounded in Belbruno's own rigorous theoretical research but written for a general audience, Fly Me to the Moon is for anybody who has ever felt moved by the spirit of discovery.
Author: A. PETTY
Publisher:
ISBN:
Category :
Languages : en
Pages : 1
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Book Description
A summary is given of technical accomplishments pertaining to three relatively closely connected areas: (1) design of a fast, accurate, and efficient computer program for computation of lunar trajectories; (2) an application of the resulting computer program to an error analysis of specific lunar trajectories and to the determination of some actual trajectories (as an example the trajectory of LUNIK III is considered in detail); and (3) tracking program (determination of initial conditions to be used in the equations of motion). (Author).
Author: A. B. Mickelwait
Publisher:
ISBN:
Category :
Languages : en
Pages : 65
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Book Description
The purpose of this paper is to present theoretical calculations of lunar trajectories from the point of view of the guidance problem. Section 1 contains the conventional two-dimensional analysis with the usual decomposition of the actual N-body problem, the earth, moon, vehicle, sun, etc., into the more tractable succession of two-body pro blems. The analytic statement of the required accuracy to impact on the moon's surface is then determined and compared with the actual accuracy needed. Section 2 examines the effect on the necessary guidance accuracy of launching out of the plane of the moon. This three-dimensional analysis indicates that the velocity accuracy requirements increase sharply as the plane of the trajectory is inclined with respect to the plane of the moon, and also that the accuracy requirements vary greatly for different launch times, both for given times of the day and given days of the month. Methods for analytically determining appropriate launch times and azimuths are also given. Section 3 is a brief application of the ideas presented above to some of the special problems posed by attempting to establish a lunar satellite.
Author:
Publisher:
ISBN:
Category : Moon
Languages : en
Pages : 534
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Book Description
