Download or read book Photogrammetry Methodology Development for Gossamer Spacecraft Structures written by and published by . This book was released on 2002 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photogrammetry Methodology Development for Gossamer Spacecraft Structures written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-19 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photogrammetry--the science of calculating 3D object coordinates from images--is a flexible and robust approach for measuring the static and dynamic characteristics of future ultra-lightweight and inflatable space structures (a.k.a., Gossamer structures), such as large membrane reflectors, solar sails, and thin-film solar arrays. Shape and dynamic measurements are required to validate new structural modeling techniques and corresponding analytical models for these unconventional systems. This paper summarizes experiences at NASA Langley Research Center over the past three years to develop or adapt photogrammetry methods for the specific problem of measuring Gossamer space structures. Turnkey industrial photogrammetry systems were not considered a cost-effective choice for this basic research effort because of their high purchase and maintenance costs. Instead, this research uses mainly off-the-shelf digital-camera and software technologies that are affordable to most organizations and provide acceptable accuracy. Pappa, Richard S. and Jones, Thomas W. and Black, Jonathan T. and Walford, Alan and Robson, Stuart and Shortis, Mark R. Langley Research Center NASA/TM-2002-211739, L-18200, NAS 1.15:211739, AIAA Paper 2002-1375
Download or read book Photogrammetry and Videogrammetry Methods Development for Solar Sail Structures written by Jonathan Black and published by . This book was released on 2003 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book In Space Structural Validation Plan for a Stretched Lens Solar Array Flight Experiment written by Richard S. Pappa and published by . This book was released on 2001 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dot projection Photogrammetry and Videogrammetry of Gossamer Space Structures written by Richard S. Pappa and published by . This book was released on 2003 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pathfinder Photogrammetry Research for Ultra Lightweight and Inflatable Space Structures written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-04 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: The defining characteristic of ultra-lightweight and inflatable space structures is that they are both very large and very low mass. This makes standard contacting methods of measurement (e.g. attaching accelerometers) impractical because the dynamics of the structure would be changed by the mass of the contacting instrument. Optical measurements are therefore more appropriate. Photogrammetry is a leading candidate for the optical analysis of gossamer structures because it allows for the measurement of a large number of points, is amenable to time sequences, and offers the potential for a high degree of accuracy. The purpose of this thesis is to develop the methodology and determine the effectiveness of a photogrammetry system in measuring ultra-lightweight and inflatable space structures. The results of this thesis will be considered in the design of an automated photogrammetry system for the l6m-diameter vacuum chamber at the NASA Langley Research Center.Giersch, Louis Roy MillerLangley Research CenterPHOTOGRAMMETRY; INFLATABLE SPACE STRUCTURES; OPTICAL MEASUREMENT; STRUCTURAL ANALYSIS; ACCELEROMETERS; MASS; SEQUENCING; VACUUM CHAMBERS
Download or read book Recent Advances in Gossamer Spacecraft written by C. H. Jenkins and published by AIAA (American Institute of Aeronautics & Astronautics). This book was released on 2006 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: The pace of progress in gossamer technology has been strong since the publication of Gossamer Spacecraft: Membrane and Inflatable Structures Technology for Space Applications in 2001. Solar sails are an obvious and public evidence of this trend. But there have been many other advances as well in structures, materials, testing, and systems engineering. Recent Advances in Gossamer Spacecraft focuses on many of these, either as gossamer technology that was not sufficiently represented in the previous volume, or that has had significant growth and activity in the intervening years. The most accurate and up-to-date information has been assembled, reviewed, and presented by an outstanding group of experts.
Download or read book Inspection and Monitoring Techniques for Bridges and Civil Structures written by G Fu and published by Elsevier. This book was released on 2005-09-20 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: The safety, maintenance and repair of bridges and buildings depend on effective inspection and monitoring techniques. These methods need to be able to identify problems often hidden within structures before they become serious. This important collection reviews key techniques and their applications to bridges, buildings and other civil structures. The first group of chapters reviews ways of testing corrosion in concrete components. Given their continuing importance and vulnerability to decay, the next series of chapters describes ways of testing wood components within civil structures. A final group of chapters looks at visual and acoustic techniques and their use to assess bridges in particular. Inspection and monitoring techniques for bridges and civil structures is an invaluable reference for civil engineers involved in safety inspection, maintenance and repair of bridges and civil structures. Reviews key inspection and monitoring techniques and their applications to bridges, building and other civil structures Edited by a leading authority in the field
Download or read book Pathfinder Photogrammetry Research for Ultra Lightweight and Inflatable Space Structures written by Louis Roy Miller Giersch and published by DIANE Publishing. This book was released on 2001 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photogrammetry and Videogrammetry Methods Development for Solar Sail Structures Masters Thesis Awarded by George Washington Univ written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-15 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report discusses the development and application of metrology methods called photogrammetry and videogrammetry that make accurate measurements from photographs. These methods have been adapted for the static and dynamic characterization of gossamer structures, as four specific solar sail applications demonstrate. The applications prove that high-resolution, full-field, non-contact static measurements of solar sails using dot projection photogrammetry are possible as well as full-field, non-contact, dynamic characterization using dot projection videogrammetry. The accuracy of the measurement of the resonant frequencies and operating deflection shapes that were extracted surpassed expectations. While other non-contact measurement methods exist, they are not full-field and require significantly more time to take data. Pappa, Richard S. (Technical Monitor) and Black, Jonathan T. Langley Research Center NCC1-03008; WU 23-629-80-01
Download or read book Photogrammetry and Videogrammetry Methods Development for Solar Sail Structures written by Jonathan Black and published by . This book was released on 2003 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book AIAA Journal written by American Institute of Aeronautics and Astronautics and published by . This book was released on 2004 with total page 954 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structural Dynamics Experimental Activities in Ultra lightweight and Inflatable Space Structures written by Richard S. Pappa and published by . This book was released on 2001 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper reports recently completed structural dynamics experimental activities with new ultra-lightweight and inflatable space structures (a.k.a., "Gossamer" spacecraft) at NASA Langley Research Center, NASA Marshall Space Flight Center, and NASA Goddard Space Flight Center. Nine aspects of this work are covered: 1) inflated, rigidized tubes, 2) active control experiments, 3) photogrammetry, 4) laser vibrometry, 5) modal tests of inflatable structures, 6) in-vacuum modal tests, 7) tensioned membranes, 8) deployment tests, and 9) flight experiment support. Structural dynamics will play a major role in the design and eventually in-space deployment and performance of Grossamer spacecraft. Experimental research and development such as this is required to validate new analysis methods.
Download or read book 40th AIAA Aerospace Sciences Meeting Exhibit written by and published by . This book was released on 2002 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book IR Space Telescopes and Instruments written by John C. Mather and published by . This book was released on 2003 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 22nd AIAA Aerodynamic Measurement Technology and Ground Testing Conference 02 2700 02 2926 written by and published by . This book was released on 2002 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vehicle Accident Analysis and Reconstruction Methods written by Raymond M Brach and published by SAE International. This book was released on 2011-04-12 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: Designed for the experienced practitioner, this new book aims to help reconstruction specialists with problems they may encounter in everyday analysis. The authors demonstrate how to take the physics behind accidents out of the idealized world and into practical situations. Real-world examples are used to illustrate the methods, clarify important concepts, and provide practical applications to those working in the field. Thoroughly revised, this new edition builds on the original exploration of accident analysis, reconstruction, and vehicle design. Enhanced with new material and improved chapters on key topics, an expanded glossary of automotive terms, and a bibliography at the end of the book providing further reading suggestions make this an essential resource reference for engineers involved in litigation, forensic investigation, automotive safety, and crash reconstruction. Police officers, attorneys, and insurance professionals will also find the book to be a definitive resource in reconstructing accident scenes. New Topics: • Event data recorders (EDRs) • Frictional drag coefficients for sliding tires • Railroad grade-crossing collisions • New practical applications of mathematical methods Enhanced Features: • Expanded glossary of automotive terms • Bibliography with further reading suggestions • Improved chapters on tire forces, rollover accidents, crush energy, pedestrian collisions, vehicle dynamic simulation
