Download or read book A Deterministic Model of Sonic Boom Propagation Through a Turbulent Atmosphere written by B. H. K. Lee and published by 1972.. This book was released on 1972 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The propagation of a weak normal shock wave through a turbulent atmosphere is studied in terms of an idealized model. The turbulent field is assumed to be weak and represented by the superposition of two inclined shear waves of opposite inclination to the mean flow. The resulting flow is of a cellular nature. The cells are rectangular in shape and the sense of rotation of the flow alternates from cell to cell. If the angles made by the normal of the incident shear waves with the direction of the mean flow are greater than some critical value an exponentially decaying pressure wave is generated behind the shock. 'Spiked' or rounded' waveforms are obtained by adding or subtracting this pressure wave from the steady state pressure field. An illustrative example for a mean flow Mach number of 1.0005 is considered. (Author).

Download or read book Sonic Boom Propagation Through a Realistic Turbulent Atmosphere written by Patrice Marc Boulanger and published by . This book was released on 1994 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Determining Model of Sonic Boom Propogation Through a Turbulent Atmosphere written by National Aeronautical Establishment (Canada) and published by . This book was released on 1972 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High speed Research 1994 Sonic Boom Workshop written by David A. McCurdy and published by . This book was released on 1994 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 3D Simulation of Acoustical Shock Waves Propagation Through a Turbulent Atmosphere Application to Sonic Boom written by David Luquet and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis deals with the effects of atmospheric turbulence on the propagation of acoustical shock waves. These effects are of major interest for applications such as sonic boom, buzz saw noise or thunder. A numerical one-way method is developed to model and to simulate three-dimensional nonlinear propagation of acoustical shock waves in a moving heterogeneous medium. It relies on a split-step approach that permits to take into account efficiently the different involved physical mechanisms. To tackle realistic 3D problems (of order of one billion of degree of freedom), the implementation of the method is done using the parallel single program multiple data paradigm. Validity of this method is assessed using multiple test cases. The method is applied to investigate the effects of atmospheric turbulence on sonic boom propagation through the Planetary Boundary Layer. Hence, both under-track boom and boom in the shadow zone are studied for a hypersonic configuration developed in the European project ATLLAS II. Finally, the focusing of weak shock waves on a cusped caustic is simulated. It is the first study of the stability of a nonlinear caustic to flow perturbations to our knowledge.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Abstracts of the 1971 1974 United States and Foreign Open Literature on Noise written by E. P. Bergman and published by . This book was released on 1976 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High Speed Research Sonic Boom Volume 1 written by and published by . This book was released on 1994 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1973 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Reporting Series written by and published by . This book was released on 1976 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aeronautical Report written by National Research Council Canada and published by . This book was released on 1972 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Third Conference on Sonic Boom Research written by Ira R. Schwartz and published by . This book was released on 1971 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prediction methods for sonic boom generation and propagation with overpressure minimization in supersonic transport design and operation.

Download or read book Aeronautical Engineering written by and published by . This book was released on 1974 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt: A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA).

Download or read book Second Conference on Sonic Boom Research written by Ira R. Schwartz and published by . This book was released on 1968 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of a conference on sonic boom reduction in supersonic transport flight. Topics include shock wave propagation and refraction, prediction methods for acoustic attenuation, and aerodynamic engineering aspects.

Download or read book Sonic Boom Research written by A. R. Seebass and published by . This book was released on 1967 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development of Sonic boom Signatures in a Stratified Atmosphere written by Raymond L. Barger and published by . This book was released on 1968 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Progress in Astronautics and Aeronautics written by and published by . This book was released on 1975 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: