Proceedings of the ION National Space Meeting on Space Navigation, Theory and Practice in the Post Apollo Era PDF Download
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Author:
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ISBN:
Category : Astronautics in navigation
Languages : en
Pages : 314
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Author:
Publisher:
ISBN:
Category : Astronautics in navigation
Languages : en
Pages : 314
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Category : Aeronautics
Languages : en
Pages : 1176
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Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 176
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Author: 国立国会図書館 (Japan)
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Category : Science
Languages : en
Pages : 672
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Category : Aerospace engineering
Languages : en
Pages : 172
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Author: Harold A. Hamer
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Category : Approach guidance
Languages : en
Pages : 92
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Book Description
An empirical method has been developed for onboard guidance within the sphere of influence of a celestial body. For guidance maneuvers made at a relatively large distance from the body, only one preselected measurement from a star to the body is required. Although the method is designed to control the magnitude of the periapsis radius (or entry angle), the periapsis position and velocity automatically remain close to the nominal values. For lunar approach, error analysis with an assumed one-sigma error of 10 seconds of arc in the optical angular measurements and a one-sigma velocity-cutoff error of 0.2 m/sec has shown that perilune radius can be controlled to a one-sigma accuracy of from 7 to 13 km, depending on the time the approach guidance is performed.
Author: Jet Propulsion Laboratory (U.S.)
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ISBN:
Category : Space flight
Languages : en
Pages : 262
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Author:
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ISBN:
Category : Science
Languages : en
Pages : 672
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Category : Union catalogs
Languages : en
Pages : 616
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Includes entries for maps and atlases.
Author:
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ISBN:
Category :
Languages : en
Pages : 88
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The Bulletin of the Atomic Scientists is the premier public resource on scientific and technological developments that impact global security. Founded by Manhattan Project Scientists, the Bulletin's iconic "Doomsday Clock" stimulates solutions for a safer world.
