Download or read book On the Libration of a Gravity Gradient Stabilized Spacecraft in an Eccentric Orbit written by Albert J. Fleig (Jr.) and published by . This book was released on 1970 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: General analytical methods for predicting planar and three dimensional attitude motion of a gravity gradient spacecraft in an elliptical orbit are developed. Regions of stability from the linearized planar equation of Mathieu form are plotted versus inertia parameters and orbit eccentricity. Similar plots showing the effects of damping are presented. The planar equation for larger eccentricities is examined with asymptotic expansion methods (KBM) for increased accuracy. An analysis based on the Hamiltonian and using canonical transformations and the method of averaging is applied to the three degree of freedom equations. Thirty-two combinations of resonant eigenfrequencies, indicating both nonlinear and parametric resonances, and including six previously shown by Breakwell and Pringle, are found. Nineteen of these combinations lead to unbounded increases in the amplitude of oscillation of one or more of the spacecraft modes. Eight lead to significant interchanges of energy between modes. The remaining five have little effect.
Download or read book On the Libration of a Gravity Gradient Stabilized Spacecraft in an Eccentric Orbit written by Albert J. Fleig (Jr.) and published by . This book was released on 1970 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On the Libration of a Gravity Gradient Stabilized Spacecraft in an Eccentric Orbit written by Albert Joseph Fleig and published by . This book was released on 1970 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On the Libration of a Gravity Gradient Stabilized Spacecraft in an Eccentric Orbit written by Albert Joseph Fleig (Jr.) and published by . This book was released on 1968 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On the Libration of a Gravity Gradient Stabilized Spacecraft in an Eccentric Orbit written by Albert J. Fleig (Jr.) and published by . This book was released on 1970 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: General analytical methods for predicting planar and three dimensional attitude motion of a gravity gradient spacecraft in an elliptical orbit are developed. Regions of stability from the linearized planar equation of Mathieu form are plotted versus inertia parameters and orbit eccentricity. Similar plots showing the effects of damping are presented. The planar equation for larger eccentricities is examined with asymptotic expansion methods (KBM) for increased accuracy. An analysis based on the Hamiltonian and using canonical transformations and the method of averaging is applied to the three degree of freedom equations. Thirty-two combinations of resonant eigenfrequencies, indicating both nonlinear and parametric resonances, and including six previously shown by Breakwell and Pringle, are found. Nineteen of these combinations lead to unbounded increases in the amplitude of oscillation of one or more of the spacecraft modes. Eight lead to significant interchanges of energy between modes. The remaining five have little effect.
Download or read book On Libration of Gravity Gradient Stabilized Spacecraft in an Eccentric Oribit with List of References written by and published by . This book was released on 1970 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Attitude Reacquisition of a Gravity gradient Control moment gyro Stabilized Spacecraft written by Clark E. Stohl and published by . This book was released on 1970 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Impulsive or time-decaying disturbances of sufficient magnitude will cause a gravitygradient control-moment-gyro stabilized spacecraft to tumble. A procedure for operating a thruster system by ground command to perform reacquisition was functionally designed and evaluated on an analog computer. When the disturbance has ceased, an on-board thruster system is used to aline the total angular momentum vector of the spacecraft in an orientation that allows the control-moment gyros to damp all spacecraft motion into a single axis. For a spacecraft in a Sun-synchronous orbit, a procedure was found to shorten the time for attitude reacquisition by using a solar array for crude attitude information.
Download or read book Advances in Spacecraft Attitude Control written by Timothy Sands and published by BoD – Books on Demand. This book was released on 2020-01-15 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spacecraft attitude maneuvers comply with Euler's moment equations, a set of three nonlinear, coupled differential equations. Nonlinearities complicate the mathematical treatment of the seemingly simple action of rotating, and these complications lead to a robust lineage of research. This book is meant for basic scientifically inclined readers, and commences with a chapter on the basics of spaceflight and leverages this remediation to reveal very advanced topics to new spaceflight enthusiasts. The topics learned from reading this text will prepare students and faculties to investigate interesting spaceflight problems in an era where cube satellites have made such investigations attainable by even small universities. It is the fondest hope of the editor and authors that readers enjoy this book.
Download or read book NASA Technical Report written by and published by . This book was released on 1970 with total page 1012 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1972 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1984 with total page 1278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1971 with total page 1290 pages. Available in PDF, EPUB and Kindle. Book excerpt: February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index.
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on with total page 1386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications Cumulative Index written by United States. Superintendent of Documents and published by . This book was released on 1976 with total page 1466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oil Empire written by Alison Fleig FRANK and published by Harvard University Press. This book was released on 2009-06-30 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: How and why did the promise of oil fail Galicia and the Austrian Empire, which at the beginning of the 20th century ranked third among the world's oil-producing states? Alison Frank traces the interaction of technology, nationalist rhetoric, social tensions, provincial politics, and entrepreneurial vision in shaping the Galician oil industry.
Download or read book Influence of Solar Radiation Pressure on Orbital Eccentricity of a Gravity gradient oriented Lenticular Satellite written by William M. Adams (Jr) and published by . This book was released on 1965 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Orbital Mechanics of Flight Mechanics written by Robert Scott Dunning and published by . This book was released on 1973 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
