Midcourse and Approach Guidance Requirements for Simplified Onboard Control of Moon-to-earth Trajectories PDF Download
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Author: Harold A. Hamer
Publisher:
ISBN:
Category : Inertial navigation (Aeronautics)
Languages : en
Pages : 68
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Book Description
Author: Harold A. Hamer
Publisher:
ISBN:
Category : Inertial navigation (Aeronautics)
Languages : en
Pages : 68
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 288
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 454
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Author:
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ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 300
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ISBN:
Category : Government publications
Languages : en
Pages : 1274
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Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1408
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Author: Harold A. Hamer
Publisher:
ISBN:
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:
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ISBN:
Category : Astronautics in navigation
Languages : en
Pages : 314
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Author: United States. National Aeronautics and Space Administration Scientific and Technical Information Division
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 966
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Author: United States. National Aeronautics and Space Administration. Scientific and Technical Information Division
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 470
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