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A System For Passive Gravity Gradient Stabiliza Tion Of Earth Satellites
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Book Synopsis A System for Passive Gravity-gradient Stabiliza Tion of Earth Satellites by : Robert E. Fischell
Download or read book A System for Passive Gravity-gradient Stabiliza Tion of Earth Satellites written by Robert E. Fischell and published by . This book was released on 1963 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: The satellite 1963 22A was successfully captured into a condition of passive, gravity-gradient stabilization. All elements of the stabilization system, including magnetic dispin, magnetic orientation devices, the extendible boom, the damping spring, and the attitude detection system performed satisfactorily. An unexpected high frequency oscillation of the boom and satellite system was observed which was most probably a dynamic effect resulting from thermal bending. This has caused the satellite to stabilize with a maximum deviation off the vertical of approximately 10 degrees. The objective of the gravity-gradient stabilization for the 22A satellite was to have the antennas directed downward within 20 degrees of the local vertical at all times. This objective has been successfully accomplished by the satellite's passive gravity-gradient attitude stabilization system. (Author).
Book Synopsis Symposium on Passive Gravity-Gradient Stabilization, Ames Research Center, Moffett Field, California, May 10-11, 1965 by :
Download or read book Symposium on Passive Gravity-Gradient Stabilization, Ames Research Center, Moffett Field, California, May 10-11, 1965 written by and published by . This book was released on 1966 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Orbital Results from Gravity-gradient Stabilized Satellites by : Frederick F. Mobley
Download or read book Orbital Results from Gravity-gradient Stabilized Satellites written by Frederick F. Mobley and published by . This book was released on 1966 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: The possibility of using the earth's gravity field for vertical stabilization of near-earth satellites has intrigued theoreticians for many years. The very small stabilizing torque available and the lack of a natural damping mechanism have been recognized as the major problems. The satellite 1963-22A, launched in June 1963, was the first orbiting vehicle to achieve passive gravity-gradient stabilization. A 100-foot extendible boom was used to develop gravity-gradient stabilizing torque. A combination of a lossy spring and magnetic hysteresis rods provided damping. By June 1964 four other satellites had achieved gravity-gradient stabilization. The satellite 1964-26A was similar to 1963-22A except that good damping was achieved with magnetic hysteresis rods alone. The discovery that several slender rods of magnetic material, weighing only 0.6 pounds and entirely passive, would damp gravity-gradient librations by interaction with the earth's magnetic field was a major advance in space technology. The accuracy of vertical stabilization has typically been better than 10 degrees. (Author).
Book Synopsis Gravity Gradient Stabilization by : Robert E. Roberson
Download or read book Gravity Gradient Stabilization written by Robert E. Roberson and published by . This book was released on 1965 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Torques and Attitude Sensing in Earth Satellites by : S. Fred Singer
Download or read book Torques and Attitude Sensing in Earth Satellites written by S. Fred Singer and published by Elsevier. This book was released on 2012-12-02 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: Applied Mathematics and Mechanics, Volume 7: Torques and Attitude Sensing in Earth Satellites focuses on the possible torques that can affect the angular momentum of an Earth satellite. This book provides an understanding of the environment in which a satellite operates. Organized into 16 chapters, this volume starts with an overview of the application of force-free motion to space programs. This text then discusses the torque effects of a gravitational field, particularly with its gradient. Other chapters consider a particular method of gravity-gradient stabilization that utilizes a passive device to damp librations and thereby attain a vertical orientation. This book discusses as well the effects of the geomagnetic field on the angular motion of a satellite. The reader is also introduced to the method of magnetic attitude control employed in the Tiros satellite. The final chapter deals with the problem of horizon sensing, which is important for satellites requiring Earth stabilization. Astrophysicists will find this book useful.
Book Synopsis Estimation and Prediction of the Attitude of a Passive Gravity-stabilized Satellite by : Bruce E. Tinling
Download or read book Estimation and Prediction of the Attitude of a Passive Gravity-stabilized Satellite written by Bruce E. Tinling and published by . This book was released on 1969 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Method for predicting attitude of passive gravity stabilized satellite.
Book Synopsis Passive Aerodynamic Attitude Stabilization of Near Earth Satellites by : D. M. Schrello
Download or read book Passive Aerodynamic Attitude Stabilization of Near Earth Satellites written by D. M. Schrello and published by . This book was released on 1961 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stabilization System Analysis and Performance of the Geos-A Gravity-gradient Satellite (Explorer XXIX) by : V. L. Pisacanne
Download or read book Stabilization System Analysis and Performance of the Geos-A Gravity-gradient Satellite (Explorer XXIX) written by V. L. Pisacanne and published by . This book was released on 1967 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Perturbations of a Gravity Gradient Stabilization System by : Richard Henry Frick
Download or read book Perturbations of a Gravity Gradient Stabilization System written by Richard Henry Frick and published by . This book was released on 1965 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: Satellite attitude stabilization systems utilizing the gradient of the earth's gravitational field have the advantage of being completely passive (i.e., no power is required). However, the stabilizing moments developed are extremely small and as a result such systems are subject to attitude perturbations from sources which would ordinarily be neglected in the evaluation of an active stabilization system. This memorandum investigates certain of these sources of attitude perturbation including micro-meteoroid impact, solar radiation pressure, stationkeeping propulsion, orbital eccentricity, and on-board rotating machinery. In the analysis, formulas are developed which determine the magnitude of the pitch, roll and yaw perturbations resulting from each of the above sources. Application of these results to an assumed vehicle configuration shows that the resulting attitude perturbations can be of the order of several degrees. While these perturbations do not necessarily rule out gravity gradient stabilization, their magnitudes for a given vehicle configuration should be considered for their compatibility with the mission requirements. (Author).
Book Synopsis Passive Gravity-gradient Libration Dampers: Space Vehicle Design Criteria (guidance and Control) by :
Download or read book Passive Gravity-gradient Libration Dampers: Space Vehicle Design Criteria (guidance and Control) written by and published by . This book was released on 1971 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis of a Passive Gravity Gradient Satellite Attitude Control System by : Roza Hashemian
Download or read book Analysis of a Passive Gravity Gradient Satellite Attitude Control System written by Roza Hashemian and published by . This book was released on 1965 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Symposium on Passive Gravity-Gradient Stabilization by :
Download or read book Symposium on Passive Gravity-Gradient Stabilization written by and published by . This book was released on 1966 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stabilization System Analysis and Performance of the GEOS-A Gravity-gradient Satellite /Explorer XXIX/ by :
Download or read book Stabilization System Analysis and Performance of the GEOS-A Gravity-gradient Satellite /Explorer XXIX/ written by and published by . This book was released on 1967 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Generalized Approach to Gravity-gradient Stabilization of Gyrostat Satellites by : Richard W. Longman
Download or read book A Generalized Approach to Gravity-gradient Stabilization of Gyrostat Satellites written by Richard W. Longman and published by . This book was released on 1969 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Model Problem on the Response Speed and Accuracy of a Satellite Gravity-Gradient Stabilization System by : K. V. Lukanin
Download or read book Model Problem on the Response Speed and Accuracy of a Satellite Gravity-Gradient Stabilization System written by K. V. Lukanin and published by . This book was released on 1971 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report investigates the attitude performance of an earth orbiting gravity-gradient spacecraft. First the transient response is determined for a system which has damping about one to three orthogonal axes and is in a circular orbit. The characteristic equation is utilized to find optimal values of the spacecraft's adjustable parameters. The transient response is also studied for the separate conditions of eccentric orbit, addition of a constant speed flywheel, and addition of torques due to atmospheric drag. Finally, improvement of the steady state pointing accuracy is considered. (Author).
Book Synopsis A Numerical Analysis of Passive Attitude Stabilization Using a Tethered Balloon on a Gravity Gradient Satellite by : Ernest Matias Maramba
Download or read book A Numerical Analysis of Passive Attitude Stabilization Using a Tethered Balloon on a Gravity Gradient Satellite written by Ernest Matias Maramba and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Passive Eddy Current Damping of a Gravity Gradient Stabilized Satellite by : Jack B. Powell
Download or read book Passive Eddy Current Damping of a Gravity Gradient Stabilized Satellite written by Jack B. Powell and published by . This book was released on 1970 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
