Midcourse and Approach Guidance Requirements for Simplified Onboard Control of Moon-to-earth Trajectories

Midcourse and Approach Guidance Requirements for Simplified Onboard Control of Moon-to-earth Trajectories PDF Author: Harold A. Hamer
Publisher:
ISBN:
Category : Inertial navigation (Aeronautics)
Languages : en
Pages : 68

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Midcourse and Approach Guidance Requirements for Simplified Onboard Control of Moon-to-earth Trajectories

Midcourse and Approach Guidance Requirements for Simplified Onboard Control of Moon-to-earth Trajectories PDF Author: Harold A. Hamer
Publisher:
ISBN:
Category : Inertial navigation (Aeronautics)
Languages : en
Pages : 68

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Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 288

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NASA Technical Note

NASA Technical Note PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 454

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Applied Mechanics Reviews

Applied Mechanics Reviews PDF Author:
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ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 300

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Monthly Catalog of United States Government Publications

Monthly Catalog of United States Government Publications PDF Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1274

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Monthly Catalog of United States Government Publications, Cumulative Index

Monthly Catalog of United States Government Publications, Cumulative Index PDF Author: United States. Superintendent of Documents
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ISBN:
Category : United States
Languages : en
Pages : 1408

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An Approach Guidance Method Using a Single Onboard Optical Measurement

An Approach Guidance Method Using a Single Onboard Optical Measurement PDF Author: Harold A. Hamer
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ISBN:
Category : Approach guidance
Languages : en
Pages : 92

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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.

Proceedings of the ION National Space Meeting on Space Navigation, Theory and Practice in the Post Apollo Era

Proceedings of the ION National Space Meeting on Space Navigation, Theory and Practice in the Post Apollo Era PDF Author:
Publisher:
ISBN:
Category : Astronautics in navigation
Languages : en
Pages : 314

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NASA Scientific and Technical Reports

NASA Scientific and Technical Reports PDF 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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A Selected Listing of NASA Scientific and Technical Reports

A Selected Listing of NASA Scientific and Technical Reports PDF 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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