Download or read book Investigation of Liquid Sloshing in Spin stabilized Satellites written by Joseph Russell Baumgarten and published by . This book was released on 1985 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of Liquid Sloshing in Spin stabilized Satellites written by J. R. Baumgarten and published by . This book was released on 1989 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of Liquid Sloshing in Spin Stabilized Satellites written by and published by . This book was released on 1993 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several spin-stabilized communication satellites with liquid stores on board have exhibited unstable nutational motion. Liquid sloshing is suspected as the cause of this undesirable behavior. During an initial three year grant period, a test rig was built and instrumented, a rigid body computer model was developed using a pendulum analogy to simulate the sloshing liquid, and computational fluid dynamic (CFD) methods were used to develop a primitive variable numerical algorithm to describe two and three dimensional liquid sloshing. During the current three year grant period, the test rig and rigid body computer model have been used to study the effect of various physical parameter values on the motion, and stability conditions have been determined. The structural mathematical model has been improved by introduction of finite element techniques to account for elastic deformation of the test rig, and an implicit-explicit numerical approach has been implemented to solve the coupled, nonlinear equations of motion.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1993 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nutation in the Spinning Synchronized Position Hold Engage Reorient Experimental Satellites Spacecraft and Fluid Slosh written by Caley Ann Burke and published by . This book was released on 2010 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spacecraft today are often spin-stabilized during a portion their launch or mission. Though the basics of spin stabilization are well understood, there remains uncertainty in predicting the likelihood of rapid nutation growth due to onboard liquids. Solely analytical methods of prediction are mainly unsuccessful and physical tests to gather slosh data have only been done for a few specific spacecraft. Data from past spacecraft is subject to a number complex physical factors and anomalies during the launch or mission. This study verifies a ground based method to test fluid tanks horizontally and obtain the first fundamental frequency of the tank. Horizontal tanks have the gravitational acceleration vector applied in the same direction as the acceleration experienced by an offset tank on a spinning spacecraft. The study also performs tests on the Synchronized Position-Hold, Engage, Reorient Experimental Satellites (SPHERES) satellites to characterize their nutation. In the tests, the satellite is spun about a single axis and then allowed to drift. Each principal axis is tested by at least one test. Two configurations of the satellite are tested: the satellite by itself and the satellite with an additional rigid mass attached to alter the inertia matrix of the system. These two efforts can be combined in the future to perform spinning slosh testing on the SPHERES satellites, with knowledge of the frequency of the fluid tanks. The potential for the SPHERES Testbed to add to the generic fluid slosh data is due to it having a relatively simple spacecraft system capable of both software and hardware modifications and being located in the visually observable microgravity environment of the International Space Station (ISS).

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1993 with total page 1400 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Large Space Structures Systems in the Space Station Era written by and published by . This book was released on 1991 with total page 1042 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hearings written by United States. Congress. House and published by . This book was released on 1965 with total page 2074 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 1966 NASA Authorization written by United States. Congress. House. Committee on Science and Astronautics and published by . This book was released on 1965 with total page 2006 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hearings written by United States. Congress. House. Committee on Science and Astronautics and published by . This book was released on 1965 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hearings Reports and Prints of the House Committee on Science and Astronautics written by United States. Congress. House. Committee on Science and Astronautics and published by . This book was released on 1966 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index written by and published by . This book was released on 1993 with total page 1448 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dynamics and Control of Spin stabilized Spacecraft with Sloshing Fluid Stores written by Daniel Eugene Hill and published by . This book was released on 1985 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spacecraft Dynamics and Control written by Marcel J. Sidi and published by Cambridge University Press. This book was released on 2000-07-03 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: Satellites are used increasingly in telecommunications, scientific research, surveillance, and meteorology, and these satellites rely heavily on the effectiveness of complex onboard control systems. This 1997 book explains the basic theory of spacecraft dynamics and control and the practical aspects of controlling a satellite. The emphasis throughout is on analyzing and solving real-world engineering problems. For example, the author discusses orbital and rotational dynamics of spacecraft under a variety of environmental conditions, along with the realistic constraints imposed by available hardware. Among the topics covered are orbital dynamics, attitude dynamics, gravity gradient stabilization, single and dual spin stabilization, attitude maneuvers, attitude stabilization, and structural dynamics and liquid sloshing.

Download or read book Government wide Index to Federal Research Development Reports written by and published by . This book was released on 1965-07 with total page 760 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 1993 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Library Information Sciences written by and published by . This book was released on 1986 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: