Download or read book Spin Dynamics of Manned Space Stations written by Peter R. Kurzhals and published by . This book was released on 1963 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spin Dynamics of Manned Space Stations with List of References written by and published by . This book was released on 1963 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spin Dynamics of Manned Space Stations written by Peter R. Kurzhals and published by . This book was released on 1963 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation of the spin dynamics of manned space stations has been conducted. The rigid-body equations of motion for arbitrary rotating stations were outlined and programmed on an electronic data processing system. Docking impacts, attitude-system torques, mass unbalances, and transient crew motions were simulated in these equations, and a fourth-order Runge-Kutta integration procedure was used to determine the resultant station motion. A toroidal configuration spinning about the axis of maximum moment of inertia was selected for the computer study, and results are presented in nondimensional form. The results are given as the traces of the station axis of symmetry in fixed space and as the time histories of the nondimensional angular velocities and attitudes of the station. This representation provides a simple physical picture of the station motion and of the time variation of the primary motion coordinates. The results of this analysis indicated that the applied moments, mass unbalances, and crew motions produced undamped station wobbling, which to the crew would appear as a continuous rolling motion of the station floor. Since undamped rolling motions produced by the disturbances, when coupled with the station rotation, could possibly lead to nausea and disorientation of the crew, a means of damping these motions is desirable. For this study two damping systems were considered, a gyroscopic wobble damper and a proportional jet damper. These systems, in general, were able to minimize the effects of the station wobble on the crew by reducing the apparent rolling motions to a small tilt of the station floor. The gyroscopic damping system was more efficient than the proportional jet system for small wobble angles, but the jet system was more effective than the gyroscopic system for the large wobble angles.

Download or read book Spin Dynamics of Manned Space Stations written by Peter R. Kurzhals and published by . This book was released on 1963 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation of the spin dynamics of manned space stations has been conducted. The rigid-body equations of motion for arbitrary rotating stations were outlined and programmed on an electronic data processing system. Docking impacts, attitude-system torques, mass unbalances, and transient crew motions were simulated in these equations, and a fourth-order Runge-Kutta integration procedure was used to determine the resultant station motion. A toroidal configuration spinning about the axis of maximum moment of inertia was selected for the computer study, and results are presented in nondimensional form. The results are given as the traces of the station axis of symmetry in fixed space and as the time histories of the nondimensional angular velocities and attitudes of the station. This representation provides a simple physical picture of the station motion and of the time variation of the primary motion coordinates. The results of this analysis indicated that the applied moments, mass unbalances, and crew motions produced undamped station wobbling, which to the crew would appear as a continuous rolling motion of the station floor. Since undamped rolling motions produced by the disturbances, when coupled with the station rotation, could possibly lead to nausea and disorientation of the crew, a means of damping these motions is desirable. For this study two damping systems were considered, a gyroscopic wobble damper and a proportional jet damper. These systems, in general, were able to minimize the effects of the station wobble on the crew by reducing the apparent rolling motions to a small tilt of the station floor. The gyroscopic damping system was more efficient than the proportional jet system for small wobble angles, but the jet system was more effective than the gyroscopic system for the large wobble angles.

Download or read book Spin Dynamics of Space Stations Under Transient and Steady state Excitations and Stabilizing Responses written by Peter Ralph Kurzhals and published by . This book was released on 1962 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Scientific and Technical Reports written by United States. National Aeronautics and Space Administration Scientific and Technical Information Division and published by . This book was released on 1965 with total page 1152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Selected Listing of NASA Scientific and Technical Reports for written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Division and published by . This book was released on 1964 with total page 1156 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Technical Report written by and published by . This book was released on 1967 with total page 734 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 1964 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Government Research Reports written by and published by . This book was released on 1964 with total page 1076 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Technical Note written by and published by . This book was released on 1968 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Peaceful Uses of Automation in Outer Space written by John A. Aseltine and published by Springer. This book was released on 2013-11-27 with total page 581 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book STAR written by and published by . This book was released on 1973 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Publications Announcements with Indexes written by United States. National Aeronautics and Space Administration and published by . This book was released on 1962 with total page 1318 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Report on the Research and Technological Problems Od Manned Rotating Spacecraft written by Langley Research Center Staff and published by . This book was released on 1962 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Free Vibration of a Rotating Beam connected Space Station written by James LaMar Milner and published by . This book was released on 1968 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optimization of Manned Orbital Satellite Vehicle Design with Respect to Artificial Gravity written by Benjamin J. Loret and published by . This book was released on 1961 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: A design envelope is established as the result of a human factors analysis of the artificial gravity environment peculiar to rotating space vehicles. The envelope is prescribed by: an upper limit on vehicle angular velocity of 0.4 radian/second to minimize the occurrence of ''canal sickness''; a basic upper limit on artificial gravity of 1 g; and a basic lower limit on artificial gravity of 0.2 g as the lowest value of g at which man can walk unaided. Both g-limits are modified to compensate for Coriolis forces which cause variation in g-level for tangential walking inside the rotating vehicle. An upper limit on vehicle radius of 180 feet is established on the basis of engineering practicality. The optimum vehicle configuration is established as a Modified Axially Expanded Dumbbell, characterized by a single, cylindrical, living-working compartment oriented parallel to the spin axis, counterbalanced by other vehicle components. The configuration is illustrated in the conceptual Pseudo-Geogravitational Vehicle, which has a radius of 180 feet a d an operational angular velocity of 0.4 radian/second to produce 0.9 g in th livi g-working compartment. (Author)