Download or read book A Kane s Dynamics Model for the Active Rack Isolation System written by and published by . This book was released on 2001 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Kane s Dynamics Model for the Active Rack Isolation System written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-29 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many microgravity space science experiments require vibratory acceleration levels unachievable without active isolation. The Boeing Corporation's Active Rack Isolation System (ARIS) employs a novel combination of magnetic actuation and mechanical linkages to address these isolation requirements on the International Space Station (ISS). ARIS provides isolation at the rack (International Standard Payload Rack (ISPR)) level. Effective model-based vibration isolation requires: (1) an appropriate isolation device, (2) an adequate dynamic (i.e., mathematical) model of that isolator, and (3) a suitable, corresponding controller. ARIS provides the ISS response to the first requirement. This paper presents one response to the second, in a state space framework intended to facilitate an optimal-controls approach to the third. The authors use "Kane's Dynamics" to develop a state-space, analytical (algebraic) set of linearized equations of motion for ARIS.Hampton, R. D. and Beech, G. S. and Rao, N. N. S. and Rupert, J. K. and Kim, Y. K.Marshall Space Flight CenterMATHEMATICAL MODELS; MICROGRAVITY; VIBRATION ISOLATORS; SPACEBORNE EXPERIMENTS; ISOLATION; VIBRATION; PAYLOADS; LINKAGES; ISOLATORS; INTERNATIONAL SPACE STATION; EQUATIONS OF MOTION; CONTROLLERS; ALGEBRA; ADVANCED RANGE INSTRUMENTATION SHIP
Download or read book Development of a Simulation Capability for the Space Station Active Rack Isolation System written by and published by . This book was released on 1998 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recapturing a Future for Space Exploration written by National Research Council and published by National Academies Press. This book was released on 2012-01-30 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: More than four decades have passed since a human first set foot on the Moon. Great strides have been made in our understanding of what is required to support an enduring human presence in space, as evidenced by progressively more advanced orbiting human outposts, culminating in the current International Space Station (ISS). However, of the more than 500 humans who have so far ventured into space, most have gone only as far as near-Earth orbit, and none have traveled beyond the orbit of the Moon. Achieving humans' further progress into the solar system had proved far more difficult than imagined in the heady days of the Apollo missions, but the potential rewards remain substantial. During its more than 50-year history, NASA's success in human space exploration has depended on the agency's ability to effectively address a wide range of biomedical, engineering, physical science, and related obstacles-an achievement made possible by NASA's strong and productive commitments to life and physical sciences research for human space exploration, and by its use of human space exploration infrastructures for scientific discovery. The Committee for the Decadal Survey of Biological and Physical Sciences acknowledges the many achievements of NASA, which are all the more remarkable given budgetary challenges and changing directions within the agency. In the past decade, however, a consequence of those challenges has been a life and physical sciences research program that was dramatically reduced in both scale and scope, with the result that the agency is poorly positioned to take full advantage of the scientific opportunities offered by the now fully equipped and staffed ISS laboratory, or to effectively pursue the scientific research needed to support the development of advanced human exploration capabilities. Although its review has left it deeply concerned about the current state of NASA's life and physical sciences research, the Committee for the Decadal Survey on Biological and Physical Sciences in Space is nevertheless convinced that a focused science and engineering program can achieve successes that will bring the space community, the U.S. public, and policymakers to an understanding that we are ready for the next significant phase of human space exploration. The goal of this report is to lay out steps and develop a forward-looking portfolio of research that will provide the basis for recapturing the excitement and value of human spaceflight-thereby enabling the U.S. space program to deliver on new exploration initiatives that serve the nation, excite the public, and place the United States again at the forefront of space exploration for the global good.
Download or read book A High Fidelity Model of the Active Rack Isolation System written by Geoffrey S. Beech and published by . This book was released on 2000 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reference Guide to the International Space Station written by National Aeronautics and Space Administration and published by Government Printing Office. This book was released on 2015-11-18 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this edition, NASA provides an overview of the ISS, describe its research facilities and accommodations, and provide key information to conduct your experiments on this unique orbiting laboratory.
Download or read book A kane s Dynamics Model for the Active Rack Isolation System Part Two written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-29 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many microgravity space-science experiments require vibratory acceleration levels that are unachievable without active isolation. The Boeing Corporation's active rack isolation system (ARIS) employs a novel combination of magnetic actuation and mechanical linkages to address these isolation requirements on the International Space Station. Effective model-based vibration isolation requires: (1) An isolation device, (2) an adequate dynamic; i.e., mathematical, model of that isolator, and (3) a suitable, corresponding controller. This Technical Memorandum documents the validation of that high-fidelity dynamic model of ARIS. The verification of this dynamics model was achieved by utilizing two commercial off-the-shelf (COTS) software tools: Deneb's ENVISION(registered trademark), and Online Dynamics Autolev(trademark). ENVISION is a robotics software package developed for the automotive industry that employs three-dimensional computer-aided design models to facilitate both forward and inverse kinematics analyses. Autolev is a DOS-based interpreter designed, in general, to solve vector-based mathematical problems and specifically to solve dynamics problems using Kane's method. The simplification of this model was achieved using the small-angle theorem for the joint angle of the ARIS actuators. This simplification has a profound effect on the overall complexity of the closed-form solution while yielding a closed-form solution easily employed using COTS control hardware.Beech, G. S. and Hampton, R. D. and Rupert, J. K.Marshall Space Flight CenterDYNAMIC MODELS; INVERSE KINEMATICS; VIBRATION ISOLATORS; COMPUTER PROGRAMS; CONTROLLERS; ROBOTICS; COMMERCIAL OFF-THE-SHELF PRODUCTS; COMPUTER AIDED DESIGN; SPACECRAFT EQUIPMENT; RACKS (FRAMES)
Download or read book Departments of Veterans Affairs and Housing and Urban Development and Independent Agencies Appropriations for 2004 written by United States. Congress. House. Committee on Appropriations. Subcommittee on VA, HUD, and Independent Agencies and published by . This book was released on 2003 with total page 1558 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Departments of Veterans Affairs and Housing and Urban Development and Independent Agencies Appropriations for 2002 written by United States. Congress. House. Committee on Appropriations. Subcommittee on VA, HUD, and Independent Agencies and published by . This book was released on 2002 with total page 1088 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Departments of Veterans Affairs and Housing and Urban Development and Independent Agencies Appropriations for 1999 written by United States. Congress. House. Committee on Appropriations. Subcommittee on VA, HUD, and Independent Agencies and published by . This book was released on 1998 with total page 986 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Kane s Dynamics Model for the Active Rack Isolation System written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-27 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the late 1980s, microgravity researchers began to voice their concern that umbilical-transmitted energy could significantly degrade the acceleration environment of microgravity space science experiments onboard manned spacecraft. Since umbilicals are necessary for many experiments, control designers began to seek ways to compensate for these "indirect" disturbances. Hampton, et al., used the Kane s method to develop a model of the active rack isolation system (ARIS) that includes (1) actuator control forces, (2) direct disturbance forces, and (3) indirect, actuator-transmitted disturbances. Their model does not, however, include the indirect, umbilical-transmitted disturbances. Since the umbilical stiffnesses are not negligible, these indirect disturbances must be included in the model. Until the umbilicals have been appropriately included, the model will be incomplete. This Technical Memorandum presents a nonlinear model of ARIS with umbilicals included. Model verification was achieved by utilizing two commercial-off-the-shelf software tools. Various forces and moments were applied to the model to yield simulated responses of the system. Plots of the simulation results show how various critical points on an ARIS-outfitted international standard payload rack behave under the application of direct disturbances, indirect disturbances, and control forces. Simulations also show system response to a variety of initial conditions.Rupert, J. K. and Hampton, R. D. and Beech, G. S.Marshall Space Flight CenterMICROGRAVITY; SPACEBORNE EXPERIMENTS; ADVANCED RANGE INSTRUMENTATION SHIP; GRAVITATIONAL EFFECTS; MANNED SPACECRAFT; PROVING; ACTUATORS; NONLINEARITY; PAYLOADS; CRITICAL POINT...
Download or read book Space Stations written by Ernst Messerschmid and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 573 pages. Available in PDF, EPUB and Kindle. Book excerpt: Construction has begun on the International Space Station (ISS)the largest and most complex extraterrestrial construction project ever. This book on space stations, and the ISS in particular, describes component technologies, systems integration, and the potential utilization of these stations. Co-authored by Messerschmid, one of the first German astronauts, it addresses students and engineers in space technology, but will interest astronomy and space enthusiasts as well.
Download or read book U S Russian Cooperation in Human Spaceflight Parts I V written by United States. Congress. House. Committee on Science. Subcommittee on Space and Aeronautics and published by . This book was released on 1999 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Creating the International Space Station written by David M. Harland and published by Springer Science & Business Media. This book was released on 2002-02-06 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the most obvious man-made object in the night sky, clearly visible to the naked eye, the International Space Station is of interest to almost everyone. Richly illustrated with around 100 figures this is the first book to describe the technical aspects of its design and construction and details of its day-to-day operation. The text relates the orbital assembly on a flight-by-flight basis, listing all the experiments in NASA's laboratory and explains their objectives. By offering a comprehensive mix of operational work, microgravity, science and future plans, it will satisfy both the space enthusiast, eager for a detailed review of the missions, and the specialist wishing to learn more about this science programme.
Download or read book Commerce Business Daily written by and published by . This book was released on 1997-12-31 with total page 1512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Future Materials Science Research on the International Space Station written by National Research Council and published by National Academies Press. This book was released on 1997-11-27 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Departments of Veterans Affairs and Housing and Urban Development and Independent Agencies Appropriations for 2001 National Aeronautics and Space Administration written by United States. Congress. House. Committee on Appropriations. Subcommittee on VA, HUD, and Independent Agencies and published by . This book was released on 2000 with total page 1060 pages. Available in PDF, EPUB and Kindle. Book excerpt:
