Improving The Efficiency Of Engines For Large Nonfighter Aircraft
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Improving The Efficiency Of Engines For Large Nonfighter Aircraft
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 2007-08-30
Improving The Efficiency Of Engines For Large Nonfighter Aircraft written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-08-30 with Technology & Engineering categories.
Because of the important national defense contribution of large, non-fighter aircraft, rapidly increasing fuel costs and increasing dependence on imported oil have triggered significant interest in increased aircraft engine efficiency by the U.S. Air Force. To help address this need, the Air Force asked the National Research Council (NRC) to examine and assess technical options for improving engine efficiency of all large non-fighter aircraft under Air Force command. This report presents a review of current Air Force fuel consumption patterns; an analysis of previous programs designed to replace aircraft engines; an examination of proposed engine modifications; an assessment of the potential impact of alternative fuels and engine science and technology programs, and an analysis of costs and funding requirements.
Improving The Efficiency Of Engines For Large Nonfighter Aircraft
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Author :
language : en
Publisher:
Release Date : 2007
Improving The Efficiency Of Engines For Large Nonfighter Aircraft written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Electronic book categories.
Assessment Of Wingtip Modifications To Increase The Fuel Efficiency Of Air Force Aircraft
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 2007-09-06
Assessment Of Wingtip Modifications To Increase The Fuel Efficiency Of Air Force Aircraft written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-09-06 with Technology & Engineering categories.
The high cost of aviation fuel has resulted in increased attention by Congress and the Air Force on improving military aircraft fuel efficiency. One action considered is modification of the aircraft's wingtip by installing, for example, winglets to reduce drag. While common on commercial aircraft, such modifications have been less so on military aircraft. In an attempt to encourage greater Air Force use in this area, Congress, in H. Rept. 109-452, directed the Air Force to provide a report examining the feasibility of modifying its aircraft with winglets. To assist in this effort, the Air Force asked the NRC to evaluate its aircraft inventory and identify those aircraft that may be good candidates for winglet modifications. This reportâ€"which considers other wingtip modifications in addition to wingletsâ€"presents a review of wingtip modifications; an examination of previous analyses and experience with such modifications; and an assessment of wingtip modifications for various Air Force aircraft and potential investment strategies.
Mayday Over Wichita
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Author : D. W. Carter
language : en
Publisher: Arcadia Publishing
Release Date : 2013-08-20
Mayday Over Wichita written by D. W. Carter and has been published by Arcadia Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-08-20 with History categories.
The little-known story of a major catastrophe in a 1960s African American community: A “commendable, if unsettling, account.” —Richard Kluger, Pulitzer Prize-winning author of Simple Justice On the cold Saturday morning of January 16, 1965, a U.S. Air Force KC-135 tanker carrying thirty-one thousand gallons of jet fuel crashed into a congested African American neighborhood in Wichita, Kansas. When the fire and destruction finally subsided, forty-seven people—mostly African American children—were dead or injured, homes were completely destroyed and numerous families were splintered. As shocking as it may sound, the event was seemingly omitted from the historical record for nearly fifty years. Now, historian D. W. Carter examines the myths and realities of the crash while providing new insights about the horrific four-minute flight that forever changed the history of Kansas. Includes photographs
The Future Of Military Engines
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Author : Andrew P. Hunter
language : en
Publisher: Rowman & Littlefield
Release Date : 2021-10-08
The Future Of Military Engines written by Andrew P. Hunter and has been published by Rowman & Littlefield this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-10-08 with Political Science categories.
CSIS's The Future of Military Engines looks at the state of the U.S. military engine industrial base and the choices confronting policymakers at the Department of Defense (DoD). The military engine industrial base is closely tied to the industrial base for commercial engines. U.S. engine providers use many of the same facilities and largely the same supply chain for military and commercial engines. The ability to leverage commercial supply chains is critical because supply chain quality underlies the performance advantage of U.S. military engines, both for individual aircraft and military aircraft fleets. International competitors such as Russia and China are seeking to overtake the U.S. in engines. However, the current U.S. advantage is sustainable if it is treated as a national priority. Many military aircraft, especially fighters, require engines with important differences from commercial aircraft. They fly different flight profiles and perform different jobs. These differences mean that while DoD can leverage the commercial engine industrial base, it must also make investments to sustain the industrial base’s unique military components. In the next few years, DoD investment in military engines is projected to decrease significantly, particularly for R&D. This presents a challenge as military-unique engineering skills are highly perishable. Four major policy choices confront DoD as it formulates its investment approach to military engines going forward: 1) Priority, 2) Resources, 3) Business Model, and 4) Competition. The DoD is at an inflection point for engine investment, and the time for choosing on these four key policy questions will come in the next few years.
Improving Algorithmic Efficiency Of Aircraft Engine Design For Optimal Mission Performance
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Author : Paul T. Millhouse
language : en
Publisher:
Release Date : 1998-03-01
Improving Algorithmic Efficiency Of Aircraft Engine Design For Optimal Mission Performance written by Paul T. Millhouse and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-03-01 with Airplanes, Military categories.
Automated techniques for selecting jet engines that minimize overall fuel consumption for a given aircraft mission have recently been developed. However, the current techniques lack the efficiency required by Wright Laboratories. Two noted dependencies between turbine engine fan pressure ratio, bypass ratio, high pressure compressor pressure ratio and overall engine mass flow allows for a reduction in the number of independent design variables searched in the optimization process. Additionally, through the use of spatial statistics (specifically kriging estimation), it is possible to significantly reduce the number of time consuming response function evaluations required to obtain an optimal combination of engine parameters. A micro Genetic Algorithm (microGA) is employed to perform the non linear optimization process with these two computation saving techniques. Optimal engine solutions were obtained. in 25 percent of the time required by previous automated search algorithms.
Materials Structures And Manufacturing For Aircraft
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Author : Melih Cemal Kuşhan
language : en
Publisher: Springer Nature
Release Date : 2022-04-25
Materials Structures And Manufacturing For Aircraft written by Melih Cemal Kuşhan and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-04-25 with Technology & Engineering categories.
This book offers a comprehensive look at materials science topics in aerospace, air vehicle structures and manufacturing methods for aerospace products, examining recent trends and new technological developments. Coverage includes additive manufacturing, advanced material removal operations, novel wing systems, design of landing gear, eco-friendly aero-engines, and light alloys, advanced polymers, composite materials and smart materials for structural components. Case studies and coverage of practical applications demonstrate how these technologies are being successfully deployed. Materials, Structures & Manufacturing for Aircraft will appeal to a broad readership in the aviation community, including students, engineers, scientists, and researchers, as a reference source for material science and modern production techniques.
Ultra Efficient Engine Technology Systems Integration And Environmental Assessment
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-06-12
Ultra Efficient Engine Technology Systems Integration And Environmental Assessment written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-12 with categories.
This study documents the design and analysis of four types of advanced technology commercial transport airplane configurations (small, medium large and very large) with an assumed technology readiness date of 2010. These airplane configurations were used as a platform to evaluate the design concept and installed performance of advanced technology engines being developed under the NASA Ultra Efficient Engine Technology (UEET) program. Upon installation of the UEET engines onto the UEET advanced technology airframes, the small and medium airplanes both achieved an additional 16% increase in fuel efficiency when using GE advanced turbofan engines. The large airplane achieved an 18% increase in fuel efficiency when using the P&W geared fan engine. The very large airplane (i.e. BWB), also using P&W geared fan engines, only achieved an additional 16% that was attributed to a non-optimized airplane/engine combination.Daggett, David L. and Geiselhart, Karl A. (Technical Monitor)Langley Research CenterEXHAUST EMISSION; AIRCRAFT ENGINES; TECHNOLOGY ASSESSMENT; ENGINE DESIGN; DESIGN ANALYSIS; TURBOFAN ENGINES; TRANSPORT AIRCRAFT; SYSTEMS INTEGRATION; INSTALLING; COMMERCIAL AIRCRAFT; AIRFRAMES
Nanoelectronics Circuits And Communication Systems
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Author : Vijay Nath
language : en
Publisher: Springer
Release Date : 2018-08-01
Nanoelectronics Circuits And Communication Systems written by Vijay Nath and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-08-01 with Technology & Engineering categories.
This book features selected papers presented at Third International Conference on Nanoelectronics, Circuits and Communication Systems (NCCS 2017). Covering topics such as MEMS and nanoelectronics, wireless communications, optical communication, instrumentation, signal processing, Internet of Things, image processing, bioengineering, green energy, hybrid vehicles, environmental science, weather forecasting, cloud computing, renewable energy, RFID, CMOS sensors, actuators, transducers, telemetry systems, embedded systems, and sensor network applications in mines, it is a valuable resource for young scholars, researchers, and academics.
Recapturing Nasa S Aeronautics Flight Research Capabilities
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 2012-07-27
Recapturing Nasa S Aeronautics Flight Research Capabilities written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-07-27 with Science categories.
In the five decades since NASA was created, the agency has sustained its legacy from the National Advisory Committee on Aeronautics (NACA) in playing a major role in U.S. aeronautics research and has contributed substantially to United States preeminence in civil and military aviation. This preeminence has contributed significantly to the overall economy and balance of trade of the United States through the sales of aircraft throughout the world. NASA's contributions have included advanced flight control systems, de-icing devices, thrust-vectoring systems, wing fuselage drag reduction configurations, aircraft noise reduction, advanced transonic airfoil and winglet designs, and flight systems. Each of these contributions was successfully demonstrated through NASA flight research programs. Equally important, the aircraft industry would not have adopted these and similar advances without NASA flight demonstration on full-scale aircraft flying in an environment identical to that which the aircraft are to operate-in other words, flight research. Flight research is a tool, not a conclusion. It often informs simulation and modeling and wind tunnel testing. Aeronautics research does not follow a linear path from simulation to wind tunnels to flying an aircraft. The loss of flight research capabilities at NASA has therefore hindered the agency's ability to make progress throughout its aeronautics program by removing a primary tool for research. Recapturing NASA's Aeronautics Flight Research Capabilities discusses the motivation for NASA to pursue flight research, addressing the aspects of the committee's task such as identifying the challenges where research program success can be achieved most effectively through flight research. The report contains three case studies chosen to illustrate the state of NASA ARMD. These include the ERA program and the Fundamental Research Program's hypersonics and supersonics projects. Following these case studies, the report describes issues with the NASA ARMD organization and management and offers solutions. In addition, the chapter discusses current impediments to progress, including demonstrating relevancy to stakeholders, leadership, and the lack of focus relative to available resources. Recapturing NASA's Aeronautics Flight Research Capabilities concludes that the type and sophistication of flight research currently being conducted by NASA today is relatively low and that the agency's overall progress in aeronautics is severely constrained by its inability to actually advance its research projects to the flight research stage, a step that is vital to bridging the confidence gap. NASA has spent much effort protecting existing research projects conducted at low levels, but it has not been able to pursue most of these projects to the point where they actually produce anything useful. Without the ability to actually take flight, NASA's aeronautics research cannot progress, cannot make new discoveries, and cannot contribute to U.S. aerospace preeminence.