Structural Analysis Of Three Space Crane Articulated Truss Joint Concepts
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Structural Analysis Of Three Space Crane Articulated Truss Joint Concepts
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Author : K. Chauncey Wu
language : en
Publisher:
Release Date : 1992
Structural Analysis Of Three Space Crane Articulated Truss Joint Concepts written by K. Chauncey Wu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with categories.
Structurally Adaptive Space Crane Concept For Assembling Space Systems On Orbit
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Author : John T. Dorsey
language : en
Publisher:
Release Date : 1992
Structurally Adaptive Space Crane Concept For Assembling Space Systems On Orbit written by John T. Dorsey and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Trusses categories.
A Space Crane Concept
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-08-10
A Space Crane Concept written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-08-10 with categories.
Future in-space construction and assembly facilities will require the use of space cranes capable of supporting and manipulating large and massive loads. The large size of the space components being considered for construction will require that these cranes have a reach on the order of 100 meters. A space crane constructed from an erectable four-longeron truss beam with 19 5-sq-m truss bays is considered. This concept was selected to be compatible with the Space Station truss. This truss is hinged at three locations along its bottom edge and attached at one end to a rotary joint cantilevered to the assembly depot's main truss structure. The crane's boom sections are rotated by extensible longeron actuators located along the top edge of the beam. To achieve maximum position maneuvering capability for the crane requires that the individual sections be capable of rotating 180 degrees about the hinge point. This can only be accomplished by offsetting the hinges from the longeron axes. Since offset hinges introduce bending moments in the truss members, an analysis of the effect of hinge offsets on the load-carrying capacity of the structure is required. The objective of the static finite element analysis described is to determine the effect of various offset lengths on the overall bending stiffness of the crane and on the maximum stresses. Mikulas, Martin M., Jr. and Davis, Robert C. and Greene, William H. Langley Research Center NASA-TM-101498, NAS 1.15:101498 RTOP 506-43-41-02...
Nasa Technical Memorandum
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Author :
language : en
Publisher:
Release Date : 1992
Nasa Technical Memorandum written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Aeronautics categories.
Monthly Catalog Of United States Government Publications
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Author :
language : en
Publisher:
Release Date :
Monthly Catalog Of United States Government Publications written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with Government publications categories.
Monthly Catalogue United States Public Documents
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Author :
language : en
Publisher:
Release Date : 1992-11
Monthly Catalogue United States Public Documents written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992-11 with Government publications categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1992
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Aeronautics categories.
Robot Manipulators
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Author : Etienne Dombre
language : en
Publisher: John Wiley & Sons
Release Date : 2013-03-01
Robot Manipulators written by Etienne Dombre and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-01 with Technology & Engineering categories.
This book presents the most recent research results on modeling and control of robot manipulators. Chapter 1 gives unified tools to derive direct and inverse geometric, kinematic and dynamic models of serial robots and addresses the issue of identification of the geometric and dynamic parameters of these models. Chapter 2 describes the main features of serial robots, the different architectures and the methods used to obtain direct and inverse geometric, kinematic and dynamic models, paying special attention to singularity analysis. Chapter 3 introduces global and local tools for performance analysis of serial robots. Chapter 4 presents an original optimization technique for point-to-point trajectory generation accounting for robot dynamics. Chapter 5 presents standard control techniques in the joint space and task space for free motion (PID, computed torque, adaptive dynamic control and variable structure control) and constrained motion (compliant force-position control). In Chapter 6, the concept of vision-based control is developed and Chapter 7 is devoted to specific issue of robots with flexible links. Efficient recursive Newton-Euler algorithms for both inverse and direct modeling are presented, as well as control methods ensuring position setting and vibration damping.
Structural Characterization Of A First Generation Articulated Truss Joint For Space Crane Application
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-08-20
Structural Characterization Of A First Generation Articulated Truss Joint For Space Crane Application written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-08-20 with categories.
A first-generation space crane articulated-truss joint was statically and dynamically characterized in a configuration that approximated an operational environment. The articulated-truss joint was integrated into a test-bed for structural characterization. Static characterization was performed by applying known loads and measuring the corresponding deflections to obtain load-deflection curves. Dynamic characterization was performed using modal testing to experimentally determine the first six mode shapes, frequencies, and modal damping values. Static and dynamic characteristics were also determined for a reference truss that served as a characterization baseline. Load-deflection curves and experimental frequency response functions are presented for the reference truss and the articulated-truss joint mounted in the test-bed. The static and dynamic experimental results are compared with analytical predictions obtained from finite element analyses. Load-deflection response is also presented for one of the linear actuators used in the articulated-truss joint. Finally, an assessment is presented for the predictability of the truss hardware used in the reference truss and articulated-truss joint based upon hardware stiffness properties that were previously obtained during the Precision Segmented Reflector (PSR) Technology Development Program. Sutter, Thomas R. and Wu, K. Chauncey and Riutort, Kevin T. and Laufer, Joseph B. and Phelps, James E. Langley Research Center RTOP 506-43-41-02...
Structural Mechanics Division Research And Technology Accomplishments For Cy 1992 And Plans For Cy 1993
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Author :
language : en
Publisher:
Release Date : 1993
Structural Mechanics Division Research And Technology Accomplishments For Cy 1992 And Plans For Cy 1993 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.