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NASA Tech Briefs
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Facing the Heat Barrier
Hypersonics is the study of flight at speeds where aerodynamic heating dominates the physics of the problem. Typically this is Mach 5 and higher. Hypersonics is an engineering science with close links to supersonics and engine design. Within this field, many of the most important results have been experimental. The principal facilities have been wind tunnels and related devices, which have produced flows with speeds up to orbital velocity. Why is it important? Hypersonics has had two major applications. The first has been to provide thermal protection during atmospheric entry. Success in this enterprise has supported ballistic-missile nose cones, has returned strategic reconnaissance photos ...
NASA SP.
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Shock Tubes and Waves
Proceedings from a symposium on shock tubes and waves held July 6-9, 1981.
The Black Horse Pike
The Black Horse Pike, like many roads in southern New Jersey, developed along a route forged by the Leni-Lenape, and its path remains virtually unchanged today. The pike follows the contours of Timber Creek, with towns established at landings and not the usual crossroads, making it unique. Lumber and charcoal were loaded onto flatboats and floated up the creek to market. Churches and stores soon joined the mills and taverns clustered along the banks. Over time, trains replaced flatboats, but no mode of transportation could compete with cars and trucks for flexibility and convenience. Progress rapidly established the many towns along the Black Horse Pike, and it just as quickly dimmed their future. While the high-speed roads that bypass the Black Horse Pike towns may have quashed their commercial futures, generations of citizens have worked tirelessly to preserve the essence of these historic towns.
NASA's Contributions to Aeronautics: Flight environment, operations, flight testing, and research
Two-volume collection of case studies on aspects of NACA-NASA research by noted engineers, airmen, historians, museum curators, journalists, and independent scholars. Explores various aspects of how NACA-NASA research took aeronautics from the subsonic to the hypersonic era.-publisher description.
Mathematical Tools for the Study of the Incompressible Navier-Stokes Equations andRelated Models
The objective of this self-contained book is two-fold. First, the reader is introduced to the modelling and mathematical analysis used in fluid mechanics, especially concerning the Navier-Stokes equations which is the basic model for the flow of incompressible viscous fluids. Authors introduce mathematical tools so that the reader is able to use them for studying many other kinds of partial differential equations, in particular nonlinear evolution problems. The background needed are basic results in calculus, integration, and functional analysis. Some sections certainly contain more advanced topics than others. Nevertheless, the authors’ aim is that graduate or PhD students, as well as researchers who are not specialized in nonlinear analysis or in mathematical fluid mechanics, can find a detailed introduction to this subject. .
