Download or read book Fuel Cell Airframe Integration Study for Short Range Aircraft Volume 1 Aircraft Propulsion and Subsystems Integration Evaluation written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-31 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study is to define the functionality and evaluate the propulsion and power system benefits derived from a Solid Oxide Fuel Cell (SOFC) based Auxiliary Power Unit (APU) for a future short range commercial aircraft, and to define the technology gaps to enable such a system. United Technologies Corporation (UTC) Integrated Total Aircraft Power System (ITAPS) methodologies were used to evaluate a baseline aircraft and several SOFC architectures. The technology benefits were captured as reductions of the mission fuel burn, life cycle cost, noise and emissions. As a result of the study, it was recognized that system integration is critical to maximize benefits from the SOFC APU for aircraft application. The mission fuel burn savings for the two SOFC architectures ranged from 4.7 percent for a system with high integration to 6.7 percent for a highly integrated system with certain technological risks. The SOFC APU itself produced zero emissions. The reduction in engine fuel burn achieved with the SOFC systems also resulted in reduced emissions from the engines for both ground operations and in flight. The noise level of the baseline APU with a silencer is 78 dBA, while the SOFC APU produced a lower noise level. It is concluded that a high specific power SOFC system is needed to achieve the benefits identified in this study. Additional areas requiring further development are the processing of the fuel to remove sulfur, either on board or on the ground, and extending the heat sink capability of the fuel to allow greater waste heat recovery, resolve the transient electrical system integration issues, and identification of the impact of the location of the SOFC and its size on the aircraft.Gummalla, Mallika and Pandy, Arun and Braun, Robert and Carriere, Thierry and Yamanis, Jean and Vanderspurt, Thomas and Hardin, Larry and Welch, RickGlenn Research CenterSOLID OXIDE FUEL CELLS; AUXILIARY POWER SOURCES; WASTE ENERGY UTILIZATION; SYSTEMS INTEGRATION; WASTE

Download or read book Fuel Cell Airframe Integration Study for Short Range Aircraft written by Mallika Gummalla and published by BiblioGov. This book was released on 2013-07 with total page 38 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.

Download or read book Fuel Cell Science and Engineering 2 Volume Set written by Detlef Stolten and published by John Wiley & Sons. This book was released on 2012-05-21 with total page 1298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fuel cells are expected to play a major role in the future power supply that will transform to renewable, decentralized and fluctuating primary energies. At the same time the share of electric power will continually increase at the expense of thermal and mechanical energy not just in transportation, but also in households. Hydrogen as a perfect fuel for fuel cells and an outstanding and efficient means of bulk storage for renewable energy will spearhead this development together with fuel cells. Moreover, small fuel cells hold great potential for portable devices such as gadgets and medical applications such as pacemakers. This handbook will explore specific fuel cells within and beyond the mainstream development and focuses on materials and production processes for both SOFC and lowtemperature fuel cells, analytics and diagnostics for fuel cells, modeling and simulation as well as balance of plant design and components. As fuel cells are getting increasingly sophisticated and industrially developed the issues of quality assurance and methodology of development are included in this handbook. The contributions to this book come from an international panel of experts from academia, industry, institutions and government. This handbook is oriented toward people looking for detailed information on specific fuel cell types, their materials, production processes, modeling and analytics. Overview information on the contrary on mainstream fuel cells and applications are provided in the book 'Hydrogen and Fuel Cells', published in 2010.

Download or read book Solid Oxide Fuel Cell Apu Feasibility Study for a Long Range Commercial Aircraft Using Utc Itaps Approach Volume 1 Aircraft Propulsion and Subsystems Integration Evaluation written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-11 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this contract effort was to define the functionality and evaluate the propulsion and power system benefits derived from a Solid Oxide Fuel Cell (SOFC) based Auxiliary Power Unit (APU) for a future long range commercial aircraft, and to define the technology gaps to enable such a system. The study employed technologies commensurate with Entry into Service (EIS) in 2015. United Technologies Corporation (UTC) Integrated Total Aircraft Power System (ITAPS) methodologies were used to evaluate system concepts to a conceptual level of fidelity. The technology benefits were captured as reductions of the mission fuel burn and emissions. The baseline aircraft considered was the Boeing 777-200ER airframe with more electric subsystems, Ultra Efficient Engine Technology (UEET) engines, and an advanced APU with ceramics for increased efficiency. In addition to the baseline architecture, four architectures using an SOFC system to replace the conventional APU were investigated. The mission fuel burn savings for Architecture-A, which has minimal system integration, is 0.16 percent. Architecture-B and Architecture-C employ greater system integration and obtain fuel burn benefits of 0.44 and 0.70 percent, respectively. Architecture-D represents the highest level of integration and obtains a benefit of 0.77 percent.Srinivasan, Hari and Yamanis, Jean and Welch, Rick and Tulyani, Sonia and Hardin, LarryGlenn Research CenterAUXILIARY POWER SOURCES; SOLID OXIDE FUEL CELLS; BOEING 777 AIRCRAFT; CERAMICS; AIRFRAMES; SYSTEMS INTEGRATION; PROPULSION; FEASIBILITY

Download or read book Innovations in Fuel Cell Technologies written by Robert Steinberger-Wilckens and published by Royal Society of Chemistry. This book was released on 2010 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the state-of-the-art in fuel cells (low and high temperature) across all the types applied in the field today and assesses current trends in development.

Download or read book Commercial Aircraft Propulsion and Energy Systems Research written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2016-08-09 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary human activities that release carbon dioxide (CO2) into the atmosphere are the combustion of fossil fuels (coal, natural gas, and oil) to generate electricity, the provision of energy for transportation, and as a consequence of some industrial processes. Although aviation CO2 emissions only make up approximately 2.0 to 2.5 percent of total global annual CO2 emissions, research to reduce CO2 emissions is urgent because (1) such reductions may be legislated even as commercial air travel grows, (2) because it takes new technology a long time to propagate into and through the aviation fleet, and (3) because of the ongoing impact of global CO2 emissions. Commercial Aircraft Propulsion and Energy Systems Research develops a national research agenda for reducing CO2 emissions from commercial aviation. This report focuses on propulsion and energy technologies for reducing carbon emissions from large, commercial aircraftâ€" single-aisle and twin-aisle aircraft that carry 100 or more passengersâ€"because such aircraft account for more than 90 percent of global emissions from commercial aircraft. Moreover, while smaller aircraft also emit CO2, they make only a minor contribution to global emissions, and many technologies that reduce CO2 emissions for large aircraft also apply to smaller aircraft. As commercial aviation continues to grow in terms of revenue-passenger miles and cargo ton miles, CO2 emissions are expected to increase. To reduce the contribution of aviation to climate change, it is essential to improve the effectiveness of ongoing efforts to reduce emissions and initiate research into new approaches.

Download or read book IEK 3 Report 2011 Climate Relevant Energy Research written by and published by Forschungszentrum Jülich. This book was released on 2012 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Solid Oxide Fuel Cell Apu Feasibility Study for a Long Range Commercial Aircraft Using Utc Itaps Approach written by Hari Srinivasan and published by BiblioGov. This book was released on 2013-07 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this contract effort was to define the functionality and evaluate the propulsion and power system benefits derived from a Solid Oxide Fuel Cell (SOFC) based Auxiliary Power Unit (APU) for a future long range commercial aircraft, and to define the technology gaps to enable such a system. The study employed technologies commensurate with Entry into Service (EIS) in 2015. United Technologies Corporation (UTC) Integrated Total Aircraft Power System (ITAPS) methodologies were used to evaluate system concepts to a conceptual level of fidelity. The technology benefits were captured as reductions of the mission fuel burn and emissions. The baseline aircraft considered was the Boeing 777-200ER airframe with more electric subsystems, Ultra Efficient Engine Technology (UEET) engines, and an advanced APU with ceramics for increased efficiency. In addition to the baseline architecture, four architectures using an SOFC system to replace the conventional APU were investigated. The mission fuel burn savings for Architecture-A, which has minimal system integration, is 0.16 percent. Architecture-B and Architecture-C employ greater system integration and obtain fuel burn benefits of 0.44 and 0.70 percent, respectively. Architecture-D represents the highest level of integration and obtains a benefit of 0.77 percent.

Download or read book Engine airframe Integration Short haul Aircraft written by S. N. B. Murthy and published by . This book was released on 1978* with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Engine airframe Integration written by S. N. B. Murthy and published by . This book was released on 1977* with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1983 with total page 1368 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Workshop on Engine Airframe Integration Short Haul Aircraft Held at the Naval Academy Annapolis Maryland on May 11 12 1977 written by S. N. B. Murthy and published by . This book was released on 1977 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: The principal concerns in the development of air-breathing propulsion, it is generally agreed, are fuel availability, engine-airframe-control integration, life-cycle reliability and environmental problems. In several respects integration presents the most challenging problems from the point of view of future airplanes, especially those in which multi-mission capability, maneuverability and special flight characteristics are demanded. Within the framework of military aircraft technology, short-haul carriers with V/STOL capability constitute one of the important classes of airplanes requiring urgent development. Integration problems are especially severe in this class of airplanes, and the solution of those problems largely determines the success of the airplanes to meet the projected mission objectives. This Workshop was devoted to a discussion of the current status, the scope for developments and the needs in research in the general area of integration problems in short-haul, V/STOL problems. The Workshop was attended by about 63 persons who came from various institutions such as universities, industries, government laboratories and research funding agencies.

Download or read book Short Course on Engine airframe Integration written by S. N. B. Murthy and published by . This book was released on 199? with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Concept Study of a Fuel Cell Propulsion System and Integration Into a Light Sports Aircraft written by Shih-Yi Yu and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advanced General Aviation Comparative Engine airframe Integration Study written by George L. Huggins and published by . This book was released on 1981 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Propulsion Investigation for Zero and Near Zero Emissions Aircraft written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2019-01-13 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: As world emissions are further scrutinized to identify areas for improvement, aviation s contribution to the problem can no longer be ignored. Previous studies for zero or near-zero emissions aircraft suggest aircraft and propulsion system sizes that would perform propulsion system and subsystems layout and propellant tankage analyses to verify the weight-scaling relationships. These efforts could be used to identify and guide subsequent work on systems and subsystems to achieve viable aircraft system emissions goals. Previous work quickly focused these efforts on propulsion systems for 70- and 100-passenger aircraft. Propulsion systems modeled included hydrogen-fueled gas turbines and fuel cells; some preliminary estimates combined these two systems. Hydrogen gas-turbine engines, with advanced combustor technology, could realize significant reductions in nitrogen emissions. Hydrogen fuel cell propulsion systems were further laid out, and more detailed analysis identified systems needed and weight goals for a viable overall system weight. Results show significant, necessary reductions in overall weight, predominantly on the fuel cell stack, and power management and distribution subsystems to achieve reasonable overall aircraft sizes and weights. Preliminary conceptual analyses for a combination of gas-turbine and fuel cell systems were also performed, and further studies were recommended. Using gas-turbine engines combined with fuel cell systems can reduce the fuel cell propulsion system weight, but at higher fuel usage than using the fuel cell only. Snyder, Christopher A. and Berton, Jeffrey J. and Brown, Gerald v. and Dolce, James L. and Dravid, Marayan V. and Eichenberg, Dennis J. and Freeh, Joshua E. and Gallo, Christopher A. and Jones, Scott M. and Kundu, Krishna P. and Marek, Cecil J. and Millis, Marc G. and Murthy, Pappu L. and Roach, Timothy M. and Smith, Timothy D. and Stefko, George L. and Sullivan, Roy M. and Tornabene, Robert T. and Geiselhat, Karl A. an

Download or read book Review and Evaluation of the Air Force Hypersonic Technology Program written by National Research Council and published by National Academies Press. This book was released on 1998-09-05 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was undertaken in response to a request by the U.S. Air Force that the National Research Council (NRC) examine whether the technologies that underlie the concept of a hypersonic, air-launched, air-breathing, hydrocarbon-fueled missile with speeds up to Mach 81 can be demonstrated in time to be initially operational by 2015. To conduct the study, the NRC appointed the Committee on Review and Evaluation of the Air Force Hypersonic Technology Program, under the auspices of the Air Force Science and Technology Board.