Download or read book Development of a Sealing Concept for Off road Vehicle Axles written by Rolf Vogt and published by . This book was released on 1993 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research and Development of Design Concepts for Sealing Applications in Aerospace Vehicle Cabins written by Joseph S. Islinger and published by . This book was released on 1962 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Near absolute sealing techniques are described for small openings, such as for electrical conductors, and hatches in the walls of flight vehicle cabins. The need for absolute sealing stems from the requirement of a habitable environment in such vehicles for as long as one year under differential pressure and temperature extremes from -100 to +500 F. Considerations underlying selection of suitable seal materials for resistance to space environment are discussed. The mechanical design and material factors are also discussed. Investigations concerned with effect of elastomer permeability upon seal behavior and with techniques for sealing electrical wires and cables are described. Concepts for the four sealing applications considered are described. Recommendations are made regarding actual sealing concepts. (Author).
Download or read book Dynamic Sealing Systems for Commercial Vehicles written by James D. Symons and published by . This book was released on 1984 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Simulation of the Noise Transmission through Automotive Door Seals written by Andreas Hazir and published by Springer. This book was released on 2016-05-20 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Andreas Hazir is investigating the door seal contribution to the interior noise level of production vehicles. These investigations contain experimental contribution analyses of real production vehicles and of academic test cases as well as the development of a simulation methodology for noise transmission through sealing systems and side windows. The simulations are realized by coupling transient computational aeroacoustics of the exterior flow to nonlinear finite element simulations of the structural transmission. By introducing a linear transmission model, the setup and computational costs of the seal noise transmission are significantly reduced, resulting in the feasibility of numerical contribution analyses of real production vehicles.
Download or read book Seals and Sealing Handbook written by Robert K. Flitney and published by Elsevier. This book was released on 2014-06-13 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seals and Sealing Handbook, Sixth Edition provides comprehensive coverage of sealing technology, bringing together information on all aspects of this area to enable you to make the right sealing choice. This includes detailed coverage on the seals applicable to static, rotary and reciprocating applications, the best materials to use in your sealing systems, and the legislature and regulations that may impact your sealing choices.Updated in line with current trends this updated reference provides the theory necessary for you to select the most appropriate seals for the job and with its 'Failure Guide', the factors to consider should anything go wrong. Building on the practical, stepped approach of its predecessor, Seals and Sealing Handbook, 6th Edition remains an essential reference for any engineer or designer who uses seals in their work. - A comprehensive reference covering a broad range of seal types for all situations, to ensure that you are able to select the most appropriate seal for any given task - Includes supporting case studies and a unique 'Failure Guide' to help you troubleshoot if things go wrong - New edition includes the most up-to-date information on sealing technology, making it an essential reference for anyone who uses seals in their work
Download or read book Design Study of Wafer Seals for Future Hypersonic Vehicles written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-24 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Future hypersonic vehicles require high temperature, dynamic seals in advanced hypersonic engines and on the vehicle airframe to seal the perimeters of movable panels, flaps, and doors. Current seals do not meet the demanding requirements of these applications, so NASA Glenn Research Center is developing improved designs to overcome these shortfalls. An advanced ceramic wafer seal design has shown promise in meeting these needs. Results from a design of experiments study performed on this seal revealed that several installation variables played a role in determining the amount of leakage past the seals. Lower leakage rates were achieved by using a tighter groove width around the seals, a higher seal preload, a tighter wafer height tolerance, and a looser groove length. During flow testing, a seal activating pressure acting behind the wafers combined with simulated vibrations to seat the seals more effectively against the sealing surface and produce lower leakage rates. A seal geometry study revealed comparable leakage for full-scale wafers with 0.125 and 0.25 in. thicknesses. For applications in which lower part counts are desired, fewer 0.25-in.-thick wafers may be able to be used in place of 0.125-in.-thick wafers while achieving similar performance. Tests performed on wafers with a rounded edge (0.5 in. radius) in contact with the sealing surface resulted in flow rates twice as high as those for wafers with a flat edge. Half-size wafers had leakage rates approximately three times higher than those for full-size wafers. Dunlap, Patrick H. and Finkbeiner, Joshua R. and Steinetz, Bruce M. and DeMange, Jeffrey J. Glenn Research Center NASA/TM-2005-213858, E-15228, AIAA Paper 2005-4153
Download or read book Seal Materials for Arctic Surface Effect Vehicles written by Peter Lassovszky and published by . This book was released on 1972 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This survey presents the results of a study conducted to determine the availability of seal materials suitable for machinery systems aboard surface effect vehicles operating in the Arctic. This report includes the examination of the performance capabilities of existing seal materials adapted to low temperature use based on work and experience previously reported. The information was obtained by consulting and reviewing available literature. There are several materials available commercially which are being utilized as seals in cold temperature environments. These seals are made up of elastomers, metals, and nonmetals, or the combination of these materials. An examination of the properties of these materials indicates that selection of a proper sealing element is based upon its ability to withstand physical stresses and chemical attack. Because of the wide range of variables involved, selection of the proper seal for a particular Arctic surface effect vehicle application will, in all probability, require a specific design"--Leaf iii.
Download or read book Advanced Control Surface Seal Development for Future Space Vehicles written by J. J. Demange and published by BiblioGov. This book was released on 2013-06 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: NASA s Glenn Research Center (GRC) has been developing advanced high temperature structural seals since the late 1980's and is currently developing seals for future space vehicles as part of the Next Generation Launch Technology (NGLT) program. This includes control surface seals that seal the edges and hinge lines of movable flaps and elevons on future reentry vehicles. In these applications, the seals must operate at temperatures above 2000 F in an oxidizing environment, limit hot gas leakage to protect underlying structures, endure high temperature scrubbing against rough surfaces, and remain flexible and resilient enough to stay in contact with sealing surfaces for multiple heating and loading cycles. For this study, three seal designs were compared against the baseline spring tube seal through a series of compression tests at room temperature and 2000 F and flow tests at room temperature. In addition, canted coil springs were tested as preloaders behind the seals at room temperature to assess their potential for improving resiliency. Addition of these preloader elements resulted in significant increases in resiliency compared to the seals by themselves and surpassed the performance of the baseline seal at room temperature. Flow tests demonstrated that the seal candidates with engineered cores had lower leakage rates than the baseline spring tube design. However, when the seals were placed on the preloader elements, the flow rates were higher as the seals were not compressed as much and therefore were not able to fill the groove as well. High temperature tests were also conducted to asses the compatibility of seal fabrics against ceramic matrix composite (CMC) panels anticipated for use in next generation launch vehicles. These evaluations demonstrated potential bonding issues between the Nextel fabrics and CMC candidates.
Download or read book Skirts and Seals for Surface Effects Vehicles written by National Research Council (U.S.). Committee on Skirts and Seals for Surface Effect Vehicles and published by . This book was released on 1978 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Skirts and Seals for Surface Effect Vehicles written by National Research Council (U.S.). Committee on Skirts and Seals for Surface Effect Vehicles and published by . This book was released on 1978 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design Study of Wafer Seals for Future Hypersonic Vehicles written by and published by . This book was released on 2005 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Self sealing Structures for Space Vehicle Application written by Philip J. D'Anna and published by . This book was released on 1966 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evolution of Conventional Shock Absorber Sealing System Used in Vehicle Suspension written by Lorenc̦o A. Oriecho (Jr.) and published by . This book was released on 1994 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of a Vehicle Orientation and Control System for Automated Crack Sealing Machinery written by Jonathan Njuguna Wanjiru and published by . This book was released on 1995 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Edgar Car Lock and Seal Company Iola Kansas written by Edgar Car Lock and Seal Company and published by . This book was released on 1904 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Establishment of Roof Rail Sealing Parameters for Automobile Bodies written by J. H. Senteney and published by . This book was released on 1970 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Skirts and Seals for Surface Effect Vehicles written by NATIONAL MATERIALS ADVISORY BOARD (NAS-NAE) WASHINGTON D C. and published by . This book was released on 1978 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface Effect Vehicles (SEV's) with weights up to 200 tons capable of speeds to 80 knots over water and land are in service. Considerably larger vehicles are under development. However, the life of the fabric-reinforced, elastomer-coated skirt/seal systems on current vehicles is short; it is anticipated that even shorter skirt lives will be encountered on the larger, higher speed vehicles under development, limiting the military potential and commercial practicality of the SEV mode of transportation. The skirts are subjected to a salt water, sand, marsh, or ice environment coupled with the dynamic loading induced by high speed operation. Their failure is a very complex, interdisciplinary problem that is not completely understood. Three major modes of failure are evident: delamination; abrasion; and tearing. These may occur separately or in combination, depending on: vehicle size and design; vehicle mission; skirt and seal design; and skirt and seal material. The current status of the development of skirts and seals is reviewed. Modes of failure, loading conditions, and effects of environments, materials selection, methods of manufacture, system fabrication, and test methods are discussed. A series of recommendations is made that, if followed, should lead to the development of more durable skirts and seals.
