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Future Air Force Needs for Survivability
A key technical issue for future Air Force systems is to improve their ability to survive. Increased use of stealth technology is proposed by many to be the major element in efforts to enhance survivability for future systems. Others, however, suggest that the high cost and maintenance required of stealth technology make increased speed potentially more productive. To help address this issue, the Air Force asked the NRC to investigate combinations of speed and stealth that would provide U.S. aircraft with a high survival capability in the 2018 period, and to identify changes in R&D plans to enable such aircraft. This report presents a review of stealth technology development; a discussion of possible future missions and threats; an analysis of the technical feasibility for achieving various levels of stealth and different speeds by 2018 and of relevant near-term R&D needs and priorities; and observations about the utility of speed and stealth trade-offs against evolving threats.
Scanning Electron Microscopy, X-Ray Microanalysis, and Analytical Electron Microscopy
During the last four decades remarkable developments have taken place in instrumentation and techniques for characterizing the microstructure and microcomposition of materials. Some of the most important of these instruments involve the use of electron beams because of the wealth of information that can be obtained from the interaction of electron beams with matter. The principal instruments include the scanning electron microscope, electron probe x-ray microanalyzer, and the analytical transmission electron microscope. The training of students to use these instruments and to apply the new techniques that are possible with them is an important function, which. has been carried out by formal ...
Big Data and Analytics for Infectious Disease Research, Operations, and Policy
With the amount of data in the world exploding, big data could generate significant value in the field of infectious disease. The increased use of social media provides an opportunity to improve public health surveillance systems and to develop predictive models. Advances in machine learning and crowdsourcing may also offer the possibility to gather information about disease dynamics, such as contact patterns and the impact of the social environment. New, rapid, point-of-care diagnostics may make it possible to capture not only diagnostic information but also other potentially epidemiologically relevant information in real time. With a wide range of data available for analysis, decision-maki...
Journey's Within
THIS A MY RESEARCHED WORK ON WHAT I HAVE LEARNED ABOUT SECRET SOCIETIES AND THIS NEW WORLD ORDER THAT KEPT POPING UP DURING THE DOCUMENTS I FOUND AND THE VIDEO’S. I POINT OUT THAT THIS NOW IS BEHIDE THE EVENTS OF 9/11 AND MANY OTHER EVENTS SUCH AS THE FIRST ATTACK ON THE WORLD TRADE CENTER BACK IN 1993 AND WACO AND COLUMBINE SCHOOL SHOOTING AND OKLAHOMA ALFRED P. MURRAH BUILDING BOMB ATTACK. IT LOOKS LIKE THESE SECRET SOCIEITES HAVE BEEN AROUND FOR A LONG TIME AND CALLING ALL THE ATTACKS AROUND THE WORLD, NOT JUST THE ONE’S IN THE UNITED STATES. THEY HAVE ALL THE MONEY IN THE WORLD SINCE THEY CONTROL THE INTERNATIONAL BANKERS AND FUND WARS. THE SEEK POWER AND CONTROL OF THE POPULATIONS OF THE WORLD. AND THERE’S MORE DESTRUCTIVE EVENTS THAT THEY HAVE PLANNED FOR THIS 2012 (FEAR-BASED) TRAUMA ATTACK ON AMERICA AGAIN FOR THEY SAY THEY DID’NT KILL ENOUGH PEOPLE ON SEPTEMBER 11TH 2001 READ THE INFORMATION IT’S OUT HERE JUST SEARCH IT OUT ONLINE AND OFFLINE.
High-Performance Bolting Technology for Offshore Oil and Natural Gas Operations
Commercially significant amounts of crude oil and natural gas lie under the continental shelf of the United States. Advances in locating deposits, and improvements in drilling and recovery technology, have made it technically and economically feasible to extract these resources under harsh conditions. But extracting these offshore petroleum resources involves the possibility, however remote, of oil spills, with resulting damage to the ocean and the coastline ecosystems and risks to life and limb of those performing the extraction. The environmental consequences of an oil spill can be more severe underwater than on land because sea currents can quickly disperse the oil over a large area and, thus, cleanup can be problematic. Bolted connections are an integral feature of deep-water well operations. High-Performance Bolting Technology for Offshore Oil and Natural Gas Operations summarizes strategies for improving the reliability of fasteners used in offshore oil exploration equipment, as well as best practices from other industrial sectors. It focuses on critical boltingâ€"bolts, studs, nuts, and fasteners used on critical connections.
Live Fire Testing of the F-22
The Live Fire Test Law mandates realistic survivability and lethality testing of covered systems or programs. A provision of the law permits the Secretary of Defense to waive tests if live fire testing would be "unreasonably expensive and impractical." Though no waiver was requested before the F-22 program entered engineering and manufacturing development, the Defense Department later asked that Congress enact legislation to permit a waiver to be granted retroactively. Rather than enact such legislation, Congress requested a study to explore the pros and cons of full-scale, full-up testing for the F-22 aircraft program. The book discusses the origin of testing requirements, evaluates the practicality, affordability, and cost-benefit of live fire tests, and examines the role of testing, modeling, and data bases in vulnerability assessment.
Bolting Reliability for Offshore Oil and Natural Gas Operations
The Planning Committee on Connector Reliability for Offshore Oil and Natural Gas Operations held the Workshop on Bolting Reliability for Offshore Oil and Natural Gas Operations in Washington, D.C., on April 10-11, 2017. The workshop was designed to advance and develop a comprehensive awareness of the outstanding issues associated with fastener material failures and equipment reliability issues. Speakers and participants were also encouraged to discuss possible paths for ameliorating risks associated with fasteners used for subsea critical equipment in oil and gas operations. This publication summarizes the presentations and discussions from the workshop.
Casting Aluminum Alloys
Casting Aluminum Alloys summarizes research conducted at Moscow Institute of Steel and Alloy during many decades in part together with Alcoa Inc. The research covered areas of the structure, properties, thermal resistance, corrosion and fatigue of aluminum alloys in industrial manufacturing. - Emphasis on interconnection among phase equilibria, thermodynamics and microstructure of alloys - Systematic overview of all phase diagrams with Al that are important for the development of casting aluminium alloys - Diagrams ("processing windows") of important technological properties such as castability, molten metal fluidity, tendency to hot pre-solidification cracking, porosity - Mathematical models for alloy mechanical properties facilitating the down-selection of best prospect candidates for new alloy development - New principles of design of eutectic casting aluminium alloys - Examples of successful novel casting alloy development, including alloys for high-strength applications, alloys with transition metals, and novel alloys utilizing aluminium scrap
