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Philip J. Haley - One of the best experts on this subject based on the ideXlab platform.

  • Progress on the Advanced Turbine Technology Applications Project (ATTAP), and Automotive Gas Turbine Outlook
    Volume 2: Aircraft Engine; Marine; Microturbines and Small Turbomachinery, 1992
    Co-Authors: Philip J. Haley
    Abstract:

    Of the four key technology areas attendant to the automotive gas Turbine (ACT), structural ceramic components are the prime focus of the Department of Energy (DOE)-sponsored, NASA-managed ATTAP. The General Motors (GM) ATTAP team first focused on the ceramic Gasifier Turbine rotor, and in 1990 achieved full design temperature (2500°F TIT) at 100%N1 (Gasifier speed). Four generations of axial-rotor design have led to such success, which also includes demonstrated resistance to foreign object impact; functionality after impact and minor damage; survivability in high-speed tip rub; and a 1000-hour durability demonstration. The ceramic Gasifier Turbine static structure, comprising scroll and vaneset (plus other support components), has also been successfully demonstrated at full (2500°F) design conditions, including successful completion of a 100-hour durability test of an all-ceramic Gasifier stage. This major contractual milestone was completed during 1991. These successes represent fundamental technology progress, not only in the GM designs, but in the materials and processes implemented by the Kyocera Corporation, Norton/TRW Ceramics, and GTE Labs.Heat management (regenerator system and thermal insulation) and combustion are other key AGT technologies. Ceramic regenerator disk efforts with Corning focus on developing extrusion technology in concert with evaluation of four ceramic material systems, to provide a disk with the requisite geometry, strength, survivability, and cost characteristics. Insulation activities with Manville target developing a ceramic refractory fiber-based system, which is wet injection molded directly in-place, and has the required thermal, adhesion, durability, and erosion properties. During 1991 a Turbine engine component was successfully injection molded with this system. Some ATTAP effort has been directed toward design of a prevaporizing/premixing combustor to meet the California 0.2 gm/mile NOx standard.Copyright © 1992 by ASME

S. G. Berenyi - One of the best experts on this subject based on the ideXlab platform.

  • Progress on the Advanced Turbine Technology Applications Project (ATTAP)
    Volume 2: Aircraft Engine; Marine; Microturbines and Small Turbomachinery, 1994
    Co-Authors: S. G. Berenyi
    Abstract:

    This technology project, sponsored by the U.S. Department of Energy, is intended to advance the technological readiness of the ceramic automotive gas Turbine engine. Of the several technologies requiring development before such an engine becomes a commercial reality, structural ceramic components represent the greatest technical challenge, and are the prime project focus. The ATTAP aims at developing and demonstrating such ceramic components that have a potential for: (1) competitive automotive engine life cycle cost and (2) operating for 3500 hr in a Turbine engine environment at Turbine inlet temperatures up to 1371°C (2500°F).Allison is addressing the ATTAP goal using internal technical resources, an extensive technology and data base from General Motors (GM), technical resources from several subcontracted domestic ceramic suppliers, and supporting technology developments from Oak Ridge and other federal programs.The development activities have resulted in the fabrication and delivery of numerous ceramic engine components, which have been characterized through laboratory evaluation, cold spin testing, hot rig testing, and finally through engine testing as appropriate. These component deliveries are the result of the ATTAP design/process development/fabrication/characterization/test cycles.Ceramic components and materials have been characterized in an on-going program using nondestructive and destructive techniques. So far in ATTAP, significant advancements include:• evolution of a correlated design procedure for monolithic ceramic components• evolution of materials and processes to meet the demanding design and operational requirements of high temperature Turbines• demonstration of ceramic component viability through thousands of hours of both steady-slate and transient testing while operating at up to full design speed, and at Turbine inlet temperatures up to 1371°C (2500°F)• completion of hundreds of hours of durability cyclic testing utilizing several “all ceramic” Gasifier Turbine assemblies• demonstration of ceramic rotor survivability under conditions of extreme foreign object ingestion, high speed Turbine tip rub, severe start-up transients, and a very demanding durability cycleIn addition to the ceramic component technology, progress has been made in the areas of low emission combustion technology and regenerator design and development.Copyright © 1994 by ASME

Nasa - One of the best experts on this subject based on the ideXlab platform.

  • Advanced Turbine Technology Applications Project (ATTAP)
    2013
    Co-Authors: Nasa
    Abstract:

    ATTAP activities during the past year were highlighted by an extensive materials assessment, execution of a reference powertrain design, test-bed engine design and development, ceramic component design, materials and component characterization, ceramic component process development and fabrication, component rig design and fabrication, test-bed engine fabrication, and hot Gasifier rig and engine testing. Materials assessment activities entailed engine environment evaluation of domestically supplied radial Gasifier Turbine rotors that were available at the conclusion of the Advanced Gas Turbine (AGT) Technology Development Project as well as an extensive survey of both domestic and foreign ceramic suppliers and Government laboratories performing ceramic materials research applicable to advanced heat engines. A reference powertrain design was executed to reflect the selection of the AGT-5 as the ceramic component test-bed engine for the ATTAP. Test-bed engine development activity focused on upgrading the AGT-5 from a 1038 C (1900 F) metal engine to a durable 1371 C (2500 F) structural ceramic component test-bed engine. Ceramic component design activities included the combustor, Gasifier Turbine static structure, and Gasifier Turbine rotor. The materials and component characterization efforts have included the testing and evaluation of several candidate ceramic materials and components being developed for use in the ATTAP. Ceramic component process development and fabrication activities were initiated for the Gasifier Turbine rotor, Gasifier Turbine vanes, Gasifier Turbine scroll, extruded regenerator disks, and thermal insulation. Component rig development activities included combustor, hot Gasifier, and regenerator rigs. Test-bed engine fabrication activities consisted of the fabrication of an all-new AGT-5 durability test-bed engine and support of all engine test activities through instrumentation/build/repair. Hot Gasifier rig and test-bed engine testing activities were performed.

Cnpc Lube - One of the best experts on this subject based on the ideXlab platform.

  • Research & Applications of A Gas Turbine Oil
    Petroleum Products Application Research, 2003
    Co-Authors: Cnpc Lube
    Abstract:

    The research process of a Gasifier Turbine oil of excellent abrasion resistance and anti - oxidation property under elevated temperature, which is suitable for the whole gas (flue gas) Turbine package, is introduced in this paper as well as its application in Yanshan Petrochemical Corp and Dalian Petrochemical Corp.

Meherwan P. Boyce - One of the best experts on this subject based on the ideXlab platform.

  • 4 – Performance and Mechanical Standards
    Gas Turbine Engineering Handbook, 2012
    Co-Authors: Meherwan P. Boyce
    Abstract:

    Publisher Summary The American Society of Mechanical Engineers (ASME) performance test codes have been written to ensure that tests are conducted in a manner that guarantees that all Turbines are tested under the same set of rules and conditions to ensure that the test results can be compared in a judicious manner. The gas Turbine is used in many applications, and in most parts, the application determines the type of gas Turbine that is best suited. The sole job of the Gasifier Turbine section is to drive the gas Turbine compressor. This section has one or two shafts. The two-shaft Gasifier section usually exists in the new high-pressure type gas Turbine, where the compressor produces a very high pressure ratio, and has two different sections. Critical speeds correspond to the natural frequencies of the gears and the rotor bearings support system. A determination of the critical speed is made by knowing the natural frequency of the system and the forcing function.