Download or read book Materials Needs and R D Strategy for Future Military Aerospace Propulsion Systems written by National Research Council and published by National Academies Press. This book was released on 2011-06-20 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ongoing development of military aerospace platforms requires continuous technology advances in order to provide the nation's war fighters with the desired advantage. Significant advances in the performance and efficiency of jet and rocket propulsion systems are strongly dependent on the development of lighter more durable high-temperature materials. Materials development has been significantly reduced in the United States since the early 1990s, when the Department of Defense (DOD), the military services, and industry had very active materials development activities to underpin the development of new propulsion systems. This resulted in significant improvements in all engine characteristics and established the United States in global propulsion technology. Many of the significant advances in aircraft and rocket propulsion have been enabled by improved materials and, materials manufacturing processes. To improve efficiency further, engine weight must be reduced while preserving thrust. Materials Needs and Research and Development Strategy for Future Military Aerospace Propulsion Systems examines whether current and planned U.S. efforts are sufficient to meet U.S. military needs while keeping the U.S. on the leading edge of propulsion technology. This report considers mechanisms for the timely insertion of materials in propulsion systems and how these mechanisms might be improved, and describes the general elements of research and development strategies to develop materials for future military aerospace propulsion systems. The conclusions and recommendations asserted in this report will enhance the efficiency, level of effort, and impact of DOD materials development activities.

Download or read book Materials Needs and R D Strategy for Future Military Aerospace Propulsion Systems written by National Research Council and published by National Academies Press. This book was released on 2011-07-20 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ongoing development of military aerospace platforms requires continuous technology advances in order to provide the nation's war fighters with the desired advantage. Significant advances in the performance and efficiency of jet and rocket propulsion systems are strongly dependent on the development of lighter more durable high-temperature materials. Materials development has been significantly reduced in the United States since the early 1990s, when the Department of Defense (DOD), the military services, and industry had very active materials development activities to underpin the development of new propulsion systems. This resulted in significant improvements in all engine characteristics and established the United States in global propulsion technology. Many of the significant advances in aircraft and rocket propulsion have been enabled by improved materials and, materials manufacturing processes. To improve efficiency further, engine weight must be reduced while preserving thrust. Materials Needs and Research and Development Strategy for Future Military Aerospace Propulsion Systems examines whether current and planned U.S. efforts are sufficient to meet U.S. military needs while keeping the U.S. on the leading edge of propulsion technology. This report considers mechanisms for the timely insertion of materials in propulsion systems and how these mechanisms might be improved, and describes the general elements of research and development strategies to develop materials for future military aerospace propulsion systems. The conclusions and recommendations asserted in this report will enhance the efficiency, level of effort, and impact of DOD materials development activities.

Download or read book A Review of United States Air Force and Department of Defense Aerospace Propulsion Needs written by National Research Council and published by National Academies Press. This book was released on 2007-01-14 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rocket and air-breathing propulsion systems are the foundation on which planning for future aerospace systems rests. A Review of United States Air Force and Department of Defense Aerospace Propulsion Needs assesses the existing technical base in these areas and examines the future Air Force capabilities the base will be expected to support. This report also defines gaps and recommends where future warfighter capabilities not yet fully defined could be met by current science and technology development plans.

Download or read book The Future of Military Engines written by Andrew P. Hunter and published by Rowman & Littlefield. This book was released on 2021-10-08 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Light Weighting for Defense Aerospace and Transportation written by Amol A. Gokhale and published by Springer Nature. This book was released on 2019-11-27 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers recent developments and current status of various materials, designs, and manufacturing practices which together contribute towards weight reduction of systems used in defense, aerospace, and automotive sectors. The topics covered in the volume range from new manufacturing methods such as additive manufacturing, intermetallics, aluminum-based solutions, near net-shaped processes, ultra-light weight metal foam and honeycomb based sandwich structures, advanced high strength steels, magnesium alloy castings and carbon fiber composites. It also talks about specific manufacturing and characterization techniques, property variability and reliability of light weight components. This volume will be useful to researchers, professionals, and students working in the fields of aerospace, transportation and defense.

Download or read book A Review of United States Air Force and Department of Defense Aerospace Propulsion Needs written by and published by . This book was released on 2006 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because rocket and air-breathing propulsion systems are the foundation on which planning for future aerospace systems rests, the Deputy Assistant Secretary of the Air Force for Science, Technology, and Engineering (SAF/AQR), with support from the Director, Defense Research and Engineering (DDR&E), asked the Air Force Studies Board (AFSB) of the National Research Council (NRC) to review and comment on the planning for propulsion development that is under way at the Department of Defense (DoD) and the commercial technical base for these air-breathing and rocket engines that allow access to space and for in-space propulsion systems (see Box 1-1 for the study's statement of task). This full-spectrum propulsion study assesses the existing technical base in these areas and examines the future Air Force capabilities the base will be expected to support; it also defines gaps and recommends where future warfighter capabilities not yet fully defined could be met by current science and technology (S&T) development plans. The recommendations in this report may shape DoD engine development planning for the next 15 years and, possibly, military capabilities beyond that.

Download or read book A Survey of Emerging Materials for Revolutionary Aerospace Vehicle Structures and Propulsion Systems written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-29 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NASA Strategic Plan identifies the long-term goal of providing safe and affordable space access, orbital transfer, and interplanetary transportation capabilities to enable scientific research, human, and robotic exploration, and the commercial development of space. Numerous scientific and engineering breakthroughs will be required to develop the technology required to achieve this goal. Critical technologies include advanced vehicle primary and secondary structure, radiation protection, propulsion and power systems, fuel storage, electronics and devices, sensors and science instruments, and medical diagnostics and treatment. Advanced materials with revolutionary new capabilities are an essential element of each of these technologies. A survey of emerging materials with applications to aerospace vehicle structures and propulsion systems was conducted to assist in long-term Agency mission planning. The comprehensive survey identified materials already under development that could be available in 5 to 10 years and those that are still in the early research phase and may not be available for another 20 to 30 years. The survey includes typical properties, a description of the material and processing methods, the current development status, and the critical issues that must be overcome to achieve commercial viability.Harris, Charles E. and Shuart, Mark J. and Gray, Hugh R.Glenn Research Center; Langley Research CenterAEROSPACE VEHICLES; SURVEYS; PROPULSION SYSTEM CONFIGURATIONS; RADIATION PROTECTION; THERMAL PROTECTION; SPACE COMMERCIALIZATION; CARBON NANOTUBES; TECHNOLOGY ASSESSMENT

Download or read book Propellant Requirements for Future Aerospace Propulsion Systems written by Tim Edwards and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Examination of the U S Air Force s Aircraft Sustainment Needs in the Future and Its Strategy to Meet Those Needs written by National Research Council and published by National Academies Press. This book was released on 2011-11-17 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ability of the United States Air Force (USAF) to keep its aircraft operating at an acceptable operational tempo, in wartime and in peacetime, has been important to the Air Force since its inception. This is a much larger issue for the Air Force today, having effectively been at war for 20 years, with its aircraft becoming increasingly more expensive to operate and maintain and with military budgets certain to further decrease. The enormously complex Air Force weapon system sustainment enterprise is currently constrained on many sides by laws, policies, regulations and procedures, relationships, and organizational issues emanating from Congress, the Department of Defense (DoD), and the Air Force itself. Against the back-drop of these stark realities, the Air Force requested the National Research Council (NRC) of the National Academies, under the auspices of the Air Force Studies Board to conduct and in-depth assessment of current and future Air Force weapon system sustainment initiatives and recommended future courses of action for consideration by the Air Force. Examination of the U.S. Air Force's Aircraft Sustainment Needs in the Future and Its Strategy to Meet Those Needs addresses the following topics: Assess current sustainment investments, infrastructure, and processes for adequacy in sustaining aging legacy systems and their support equipment. Determine if any modifications in policy are required and, if so, identify them and make recommendations for changes in Air Force regulations, policies, and strategies to accomplish the sustainment goals of the Air Force. Determine if any modifications in technology efforts are required and, if so, identify them and make recommendations regarding the technology efforts that should be pursued because they could make positive impacts on the sustainment of the current and future systems and equipment of the Air Force. Determine if the Air Logistics Centers have the necessary resources (funding, manpower, skill sets, and technologies) and are equipped and organized to sustain legacy systems and equipment and the Air Force of tomorrow. Identify and make recommendations regarding incorporating sustainability into future aircraft designs.

Download or read book Application of Lightweighting Technology to Military Aircraft Vessels and Vehicles written by National Research Council and published by National Academies Press. This book was released on 2012-04-27 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lightweighting is a concept well known to structural designers and engineers in all applications areas, from laptops to bicycles to automobiles to buildings and airplanes. Reducing the weight of structures can provide many advantages, including increased energy efficiency, better design, improved usability, and better coupling with new, multifunctional features. While lightweighting is a challenge in commercial structures, the special demands of military vehicles for survivability, maneuverability and transportability significantly stress the already complex process. Application of Lightweighting Technology to Military Vehicles, Vessels, and Aircraft assesses the current state of lightweighting implementation in land, sea, and air vehicles and recommends ways to improve the use of lightweight materials and solutions. This book considers both lightweight materials and lightweight design; the availability of lightweight materials from domestic manufacturers; and the performance of lightweight materials and their manufacturing technologies. It also considers the "trade space"-that is, the effect that use of lightweight materials or technologies can have on the performance and function of all vehicle systems and components. This book also discusses manufacturing capabilities and affordable manufacturing technology to facilitate lightweighting. Application of Lightweighting Technology to Military Vehicles, Vessels, and Aircraft will be of interest to the military, manufacturers and designers of military equipment, and decision makers.

Download or read book A Survey of Emerging Materials for Revolutionary Aerospace Vehicle Structures and Propulsion Systems written by Charles E. Harris and published by . This book was released on 2002 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Materials for Aerospace Aircraft Propulsion Systems written by and published by . This book was released on 1990-03-01 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 STAR 21 written by National Research Council and published by National Academies Press. This book was released on 1992-02-01 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dramatic political and economic changes throughout the world, coupled with rapid advances in technology, pose an important question for the U.S. Army: What technologies are best suited to defending U.S. interests against tomorrow's military threats? STAR 21 provides an expert analysis of how the Army can prepare itself for the battlefield of the futureâ€"where soldiers will wear "smart" helmets and combat chemical warfare with vaccines produced in days to counter new threats. This book summarizes emerging developments in robotics, "brillant" munitions, medical support, laser sensors, biotechnolgy, novel materials, and other key areas. Taking into account reliability, deployability, and other values that all military systems will need, the volume identifies new systems and emerging technologies that offer the greatest payoff for the Army. The volume addresses a host of important military issues, including the importance of mobile, rapidly deployable forces, the changing role of the helicopter, and how commercial technology may help the Army stay ahead of potential opponents. Alternative Selection, Doubleday's Military Book Club

Download or read book Advanced Materials Processes written by and published by . This book was released on 1994 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Evolution and Impact of Fighter Jet Engines Pioneering Aerospace Technology written by Charles Nehme and published by Charles Nehme. This book was released on with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fighter jet engine is not merely a component of aerial machinery; it embodies the pinnacle of aerospace engineering, where power, precision, and reliability converge. Within its metallic veins pulses the heart of innovation, designed to defy gravity with unparalleled efficiency and grace. From the inception of aviation, the quest for speed and maneuverability has driven engineers to push the boundaries of what is possible. The fighter jet engine stands as a testament to this relentless pursuit, where every component, from turbine blades to combustion chambers, is meticulously crafted to withstand the extremes of flight. At its core, the fighter jet engine harnesses the transformative power of combustion, converting fuel into thrust with an efficiency that defines aerial superiority. With each ignition, it propels its host aircraft into the skies with a roar that resonates through history—a symphony of engineering prowess and human ingenuity. Yet, beyond its technical marvels lies a deeper narrative: the symbiotic relationship between man and machine. Pilots entrust their lives to its performance, relying on its unwavering power to execute split-second maneuvers and engage adversaries in the theater of the sky. In the preface of a fighter jet engine, one finds not only a marvel of modern engineering but a symbol of courage, determination, and the ceaseless pursuit of dominance in the realm where the horizon meets the infinite blue.

Download or read book A Perspective on Future Directions in Aerospace Propulsion System Simulation written by Brent A. Miller and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: