A Review of Engine Seal Performance and Requirements for Current and Future Army Engine Platforms

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Publisher : Independently Published
ISBN 13 : 9781793900982
Total Pages : 26 pages
Book Rating : 4.9/5 (9 download)

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Book Synopsis A Review of Engine Seal Performance and Requirements for Current and Future Army Engine Platforms by : National Aeronautics and Space Adm Nasa

Download or read book A Review of Engine Seal Performance and Requirements for Current and Future Army Engine Platforms written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2019-01-13 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sand ingestion continues to impact combat ground and air vehicles in military operations in the Middle East. The T-700 engine used in Apache and Blackhawk helicopters has been subjected to increased overhauls due to sand and dust ingestion during desert operations. Engine component wear includes compressor and turbine blades/vanes resulting in decreased engine power and efficiency. Engine labyrinth seals have also been subjected to sand and dust erosion resulting in tooth tip wear, increased clearances, and loss in efficiency. For the current investigation, a brief overview is given of the history of the T-700 engine development with respect to sand and dust ingestion requirements. The operational condition of labyrinth seals taken out of service from 4 different locations of the T-700 engine during engine overhauls are examined. Collaborative efforts between the Army and NASA to improve turbine engine seal leakage and life capability are currently focused on noncontacting, low leakage, compliant designs. These new concepts should be evaluated for their tolerance to sand laden air. Future R&D efforts to improve seal erosion resistance and operation in desert environments are recommended Delgado, Irebert R. and Proctor, Margaret P. Glenn Research Center WBS 561581.02.08.03.15.02

A Review of Engine Seal Performance and Requirements for Current and Future Army Engine Platforms

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Author :
Publisher : BiblioGov
ISBN 13 : 9781289148669
Total Pages : 28 pages
Book Rating : 4.1/5 (486 download)

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Book Synopsis A Review of Engine Seal Performance and Requirements for Current and Future Army Engine Platforms by : Nasa Technical Reports Server (Ntrs)

Download or read book A Review of Engine Seal Performance and Requirements for Current and Future Army Engine Platforms written by Nasa Technical Reports Server (Ntrs) and published by BiblioGov. This book was released on 2013-07-01 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NASA Technical Reports Server (NTRS) houses half a million publications that are a valuable means of information to researchers, teachers, students, and the general public. These documents are all aerospace related with much scientific and technical information created or funded by NASA. Some types of documents include conference papers, research reports, meeting papers, journal articles and more. This is one of those documents.

Lubricating Oil, Automotive Engine, API Service SM for Military Administrative Service

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Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (137 download)

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Book Synopsis Lubricating Oil, Automotive Engine, API Service SM for Military Administrative Service by : Fuels and Lubricants TC 1 Engine Lubrication

Download or read book Lubricating Oil, Automotive Engine, API Service SM for Military Administrative Service written by Fuels and Lubricants TC 1 Engine Lubrication and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE Standard describes lubricating oils meeting the physical, chemical, and performance requirements of the American Petroluem Institute (API) SM category and the International Lubricant Standardization and Approval Committee (ILSAC) GF-4 standard. These oils are suitable for the lubrication of spark-ignition engines (gasoline engines). This document supersedes the military's Commercial Item Description (CID) A-A-52039.The conversion of the commercial item descriptions (CID) AA-52309 to SAE J2362 in November 1998 was done as an effort to align military needs with commercial manufacturers requirements and suppliers products. It is our belief that the API Engine Oil Licensing and Certification System (EOLCS), the American Chemistry Council (ACC) Petroleum Additives Product Approval Code of Practice, and the International Lubricant Standardization and Approval Committee (ILSAC) provide a robust framework of requirements and oversight to allow the Department of Defense to purchase these products directly, with the understanding that only products with a formal API license and meeting the most current ILSAC requirements will be procured.

Toward an Improved Hypersonic Engine Seal

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Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781721590599
Total Pages : 38 pages
Book Rating : 4.5/5 (95 download)

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Book Synopsis Toward an Improved Hypersonic Engine Seal by : National Aeronautics and Space Administration (NASA)

Download or read book Toward an Improved Hypersonic Engine Seal written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-20 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: High temperature, dynamic seals are required in advanced engines to seal the perimeters of movable engine ramps for efficient, safe operation in high heat flux environments at temperatures from 2000 to 2500 F. Current seal designs do not meet the demanding requirements for future engines, so NASA s Glenn Research Center (GRC) is developing advanced seals to overcome these shortfalls. Two seal designs and two types of seal preloading devices were evaluated in a series of compression tests at room temperature and 2000 F and flow tests at room temperature. Both seals lost resiliency with repeated load cycling at room temperature and 2000 F, but seals with braided cores were significantly more flexible than those with cores composed of uniaxial ceramic fibers. Flow rates for the seals with cores of uniaxial fibers were lower than those for the seals with braided cores. Canted coil springs and silicon nitride compression springs showed promise conceptually as potential seal preloading devices to help maintain seal resiliency. Dunlap, Patrick H., Jr. and Steinetz, Bruce M. and DeMange,Jeffrey J. and Taylor, Shawn C. Glenn Research Center NASA/TM-2003-212531, E-14093, NAS 1.15:212531, AIAA Paper 2003-4834

Brush Seal Performance and Durability Issues Based on T-700 Engine Test Results

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Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781725195141
Total Pages : 34 pages
Book Rating : 4.1/5 (951 download)

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Book Synopsis Brush Seal Performance and Durability Issues Based on T-700 Engine Test Results by : National Aeronautics and Space Administration (NASA)

Download or read book Brush Seal Performance and Durability Issues Based on T-700 Engine Test Results written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-16 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The integrity and performance of brush seals have been established. Severe bench and engine tests have shown high initial wear or run-in rates, material smearing at the interface, and bristle and rub-runner wear, but the brush seals did not fail. Short-duration (46 hr) experimental T-700 engine testing of the compressor discharge seal established over 1-percent engine performance gain (brush versus labyrinth). Long-term gains were established only as leakage comparisons, with the brush at least 20 percent better at controlling leakage. Long-term materials issues, such as wear and ultimately seal life, remain to be resolved. Future needs are cited for materials and analysis tools that account for heat generation, thermomechanical behavior, and tribological pairing to enable original equipment manufacturers to design high-temperature, high-surface-speed seals with confidence. Hendricks, R. C. Glenn Research Center NASA-TM-106502, E-8520, NAS 1.15:106502 RTOP 232-01-04...

Scientific and Technical Aerospace Reports

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Publisher :
ISBN 13 :
Total Pages : 704 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Guide to Technical Documents

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Publisher :
ISBN 13 :
Total Pages : 374 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Guide to Technical Documents by : Naval Civil Engineering Laboratory (Port Hueneme, Calif.)

Download or read book Guide to Technical Documents written by Naval Civil Engineering Laboratory (Port Hueneme, Calif.) and published by . This book was released on 1974 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The 71F Advantage

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Publisher : NDU Press
ISBN 13 : 1907521658
Total Pages : 529 pages
Book Rating : 4.9/5 (75 download)

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Book Synopsis The 71F Advantage by : National Defense University Press

Download or read book The 71F Advantage written by National Defense University Press and published by NDU Press. This book was released on 2010-09 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes a foreword by Major General David A. Rubenstein. From the editor: "71F, or "71 Foxtrot," is the AOC (area of concentration) code assigned by the U.S. Army to the specialty of Research Psychology. Qualifying as an Army research psychologist requires, first of all, a Ph.D. from a research (not clinical) intensive graduate psychology program. Due to their advanced education, research psychologists receive a direct commission as Army officers in the Medical Service Corps at the rank of captain. In terms of numbers, the 71F AOC is a small one, with only 25 to 30 officers serving in any given year. However, the 71F impact is much bigger than this small cadre suggests. Army research psychologists apply their extensive training and expertise in the science of psychology and social behavior toward understanding, preserving, and enhancing the health, well being, morale, and performance of Soldiers and military families. As is clear throughout the pages of this book, they do this in many ways and in many areas, but always with a scientific approach. This is the 71F advantage: applying the science of psychology to understand the human dimension, and developing programs, policies, and products to benefit the person in military operations. This book grew out of the April 2008 biennial conference of U.S. Army Research Psychologists, held in Bethesda, Maryland. This meeting was to be my last as Consultant to the Surgeon General for Research Psychology, and I thought it would be a good idea to publish proceedings, which had not been done before. As Consultant, I'd often wished for such a document to help explain to people what it is that Army Research Psychologists "do for a living." In addition to our core group of 71Fs, at the Bethesda 2008 meeting we had several brand-new members, and a number of distinguished retirees, the "grey-beards" of the 71F clan. Together with longtime 71F colleagues Ross Pastel and Mark Vaitkus, I also saw an unusual opportunity to capture some of the history of the Army Research Psychology specialty while providing a representative sample of current 71F research and activities. It seemed to us especially important to do this at a time when the operational demands on the Army and the total force were reaching unprecedented levels, with no sign of easing, and with the Army in turn relying more heavily on research psychology to inform its programs for protecting the health, well being, and performance of Soldiers and their families."

Commerce Business Daily

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Publisher :
ISBN 13 :
Total Pages : 1844 pages
Book Rating : 4.:/5 (334 download)

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Book Synopsis Commerce Business Daily by :

Download or read book Commerce Business Daily written by and published by . This book was released on 1998-03 with total page 1844 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Popular Science

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Publisher :
ISBN 13 :
Total Pages : 148 pages
Book Rating : 4./5 ( download)

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Book Synopsis Popular Science by :

Download or read book Popular Science written by and published by . This book was released on 2002-12 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Popular Science gives our readers the information and tools to improve their technology and their world. The core belief that Popular Science and our readers share: The future is going to be better, and science and technology are the driving forces that will help make it better.

NASA Scientific and Technical Publications

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Publisher :
ISBN 13 :
Total Pages : 178 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis NASA Scientific and Technical Publications by :

Download or read book NASA Scientific and Technical Publications written by and published by . This book was released on 1991 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Bulletin of the Atomic Scientists

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ISBN 13 :
Total Pages : 104 pages
Book Rating : 4./5 ( download)

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Book Synopsis Bulletin of the Atomic Scientists by :

Download or read book Bulletin of the Atomic Scientists written by and published by . This book was released on 1970-12 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bulletin of the Atomic Scientists is the premier public resource on scientific and technological developments that impact global security. Founded by Manhattan Project Scientists, the Bulletin's iconic "Doomsday Clock" stimulates solutions for a safer world.

The Naval Aviation Maintenance Program (NAMP).: Maintenance data systems

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Publisher :
ISBN 13 :
Total Pages : 828 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis The Naval Aviation Maintenance Program (NAMP).: Maintenance data systems by : United States. Office of the Chief of Naval Operations

Download or read book The Naval Aviation Maintenance Program (NAMP).: Maintenance data systems written by United States. Office of the Chief of Naval Operations and published by . This book was released on 1990 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Department of Defense Dictionary of Military and Associated Terms

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Publisher :
ISBN 13 :
Total Pages : 392 pages
Book Rating : 4.3/5 (243 download)

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Book Synopsis Department of Defense Dictionary of Military and Associated Terms by : United States. Joint Chiefs of Staff

Download or read book Department of Defense Dictionary of Military and Associated Terms written by United States. Joint Chiefs of Staff and published by . This book was released on 1979 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Backpacker

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ISBN 13 :
Total Pages : 206 pages
Book Rating : 4./5 ( download)

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Book Synopsis Backpacker by :

Download or read book Backpacker written by and published by . This book was released on 2001-03 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Backpacker brings the outdoors straight to the reader's doorstep, inspiring and enabling them to go more places and enjoy nature more often. The authority on active adventure, Backpacker is the world's first GPS-enabled magazine, and the only magazine whose editors personally test the hiking trails, camping gear, and survival tips they publish. Backpacker's Editors' Choice Awards, an industry honor recognizing design, feature and product innovation, has become the gold standard against which all other outdoor-industry awards are measured.

International Aerospace Abstracts

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Publisher :
ISBN 13 :
Total Pages : 514 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis International Aerospace Abstracts by :

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1997 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Popular Science

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Publisher :
ISBN 13 :
Total Pages : 182 pages
Book Rating : 4./5 ( download)

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Book Synopsis Popular Science by :

Download or read book Popular Science written by and published by . This book was released on 2004-12 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Popular Science gives our readers the information and tools to improve their technology and their world. The core belief that Popular Science and our readers share: The future is going to be better, and science and technology are the driving forces that will help make it better.