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Etude Experimentale Des Decharges Electriques De Volume En Ecoulements Supersonique Et Hypersonique
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Book Synopsis Etude expérimentale des décharges électriques de volume en écoulements supersonique et hypersonique by : Anton Lebedev
Download or read book Etude expérimentale des décharges électriques de volume en écoulements supersonique et hypersonique written by Anton Lebedev and published by . This book was released on 2001 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pour la première fois, une décharge stationnaire à lueur à forte densité de courant dans les écoulements supersonique ... et hypersonique... du gaz a été obtenue expérimentalement. Ses caractéristiques courant-tension, la répartition du potentiel électrique et la température d'arrêt dans le volume de la décharge ainsi que les valeurs des paramètres fondamentaux de son plasma ont été déterminées. Il a été découvert que la décharge à lueur agissait fortement sur l'onde de choc droite, ce qui entraîne un affaiblissement de celle-ci jusqu'à sa disparition complète. Il a été montré expérimentalement que la décharge provoque une baisse importante de la pression (jusqu'à 6 fois moins) sur la surface frontale de l'obstacle.
Book Synopsis Application des décharges électriques à l'exploration des écoulements gazeux aux grandes vitesses by : Pierre Couvertier
Download or read book Application des décharges électriques à l'exploration des écoulements gazeux aux grandes vitesses written by Pierre Couvertier and published by . This book was released on 1960 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Influence d'une décharge électrique continue sur un écoulement supersonique raréfié by : Eric Menier
Download or read book Influence d'une décharge électrique continue sur un écoulement supersonique raréfié written by Eric Menier and published by . This book was released on 2007 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le sujet de la thèse est l’étude de l’influence d’une décharge électrique sur un écoulement supersonique raréfié le long d’une plaque plane. La plaque munie d’électrodes est plongée dans un écoulement supersonique (Mach 2) et à basse pression (8 Pa). Une décharge électrique négative est créée et stabilisée au-dessus de la maquette. Un chauffage de la plaque de 200K est mesuré par thermographie infrarouge, ainsi qu’un fort champ électrique localisé au-dessus de la cathode. La spectrométrie d’émission a permis de quantifier un chauffage du gaz, là encore au-dessus de la cathode. L’aérodynamique de la plaque est modifiée par la décharge : les profils de pression mesurés par tube de Pitot ont montré un épaississement de couche limite pour des puissances électriques de 30 W et plus. En outre, des mesures par jauge de contrainte ont indiqué une augmentation légère des forces subies par la plaque. Une simulation numérique par une méthode de Monte Carlo (DSMC) des effets de la décharge a été entreprise. Le vent ionique, conséquence du transfert de quantité de mouvement entre les ions accélérés par le champ électrique et les neutres est simulé, et il est démontré qu’il ne joue pas de rôle dans les conditions de vitesse rencontrées. Un apport d’énergie en volume a indiqué des changements importants dans les profils des grandeurs macroscopiques mais pour des valeurs certainement surévaluées de l’énergie introduite. Finalement, une simulation de type paroi chauffée, basée sur les valeurs de températures mesurées expérimentalement montre sur les profils de pression des changements en accord qualitatif avec les profils expérimentaux.
Book Synopsis La production d'énergie vibrationelle par décharge électrique dans un écoulement supersonique by : B. Gautier
Download or read book La production d'énergie vibrationelle par décharge électrique dans un écoulement supersonique written by B. Gautier and published by . This book was released on 1974 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Étude expérimentale et numérique d'écoulements supersoniques en éjecteur avec et sans condensation by : Tom Marynowski
Download or read book Étude expérimentale et numérique d'écoulements supersoniques en éjecteur avec et sans condensation written by Tom Marynowski and published by . This book was released on 2007 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1993-03 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Satellite Situation Report by : Goddard Space Flight Center. Office of Public Affairs
Download or read book Satellite Situation Report written by Goddard Space Flight Center. Office of Public Affairs and published by . This book was released on 1977 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Parallel Finite Volume Algorithm for Large-eddy Simulation of Turbulent Flows by : Trong T. Bui
Download or read book A Parallel Finite Volume Algorithm for Large-eddy Simulation of Turbulent Flows written by Trong T. Bui and published by . This book was released on 1998 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Wind-tunnel Investigation of a Number of Total-pressure Tubes at High Angles of Attack by : A. Gerald Rainey
Download or read book Wind-tunnel Investigation of a Number of Total-pressure Tubes at High Angles of Attack written by A. Gerald Rainey and published by . This book was released on 1957 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Combustion and Flames by : Roland Borghi
Download or read book Combustion and Flames written by Roland Borghi and published by Editions Technips. This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Professionals working in the field of combustion may well find many points of interest, highlighted by the book's logical and global approach to phenomena, which considers mechanical, thermal and chemical aspects simultaneously. The book prioritises an understanding of the physical and chemical aspects of the phenomena, and lays particular emphasis on experimental analyses and modern numerical simulations, and on the way in which these phenomena are translated into equations.Contents: Introduction: Discovering combustion and flames. 1. Combustion thermodynamics. 2. Chemical kinetics applied to combustion. 3. Mass and energy transport by convection and diffusion. 4. Self-ignitions in closed systems. 5. Laminar flames and deflagrations. 6. Turbulent flames and deflagrations. 7. Detonation and supersonic combustion. 8. Flame ignition. 9. Combustion of liquids and sprays. 10. Pollutant emissions in combustion reactions. Index.
Download or read book Space Debris written by Heiner Klinkrad and published by Springer Science & Business Media. This book was released on 2006-09-01 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: The future evolution of the debris environment will be forecast on the basis of traffic models and possible hazard mitigation practices. The text shows how large trackable objects will have re-entry pinpointed and predictions made on related risk assessment for possible ground impact. Models will also be described for meteoroids which are also a prevailing risk.
Author :North Atlantic Treaty Organization. Advisory Group for Aeronautical Research and Development. Structures and Materials Panel Publisher : ISBN 13 : Total Pages :506 pages Book Rating :4.E/5 ( download)
Book Synopsis Manual on Aeroelasticity by : North Atlantic Treaty Organization. Advisory Group for Aeronautical Research and Development. Structures and Materials Panel
Download or read book Manual on Aeroelasticity written by North Atlantic Treaty Organization. Advisory Group for Aeronautical Research and Development. Structures and Materials Panel and published by . This book was released on 1962 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technocratic Dreaming by : Paul James
Download or read book Technocratic Dreaming written by Paul James and published by . This book was released on 1990 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technocratic dreaming of very fast trains and Japanese designer cities.
Download or read book Unidentified written by Robert Salas and published by Career Press. This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1969 the U.S. Air Force issued a statement that read' "No UFO reported, investigated and evaluated by the Air Force was ever an indication of threat to our national security." This statement is patently false. It has been proven untrue by the testimony of many military officers and airmen and documentation of incidents involving UFOs and nuclear weapons, testimonies of which the U.S. Air Force was fully aware. Unidentified details many of these testimonies, some for the first time. As partial justification for its position, the Air Force cites a University of Colorado study that was contracted and paid for by federal funds. Unidentified reveals how this study was actually just another part of the plan to cover up the reality of the UFO phenomenon. For the first time, Unidentified publishes evidence that the investigators for the Colorado study knew about the UFO-related missile shutdown incidents but did not investigate them or include them in their final report.
Book Synopsis Lost Secrets of the Sacred Ark by : Laurence Gardner
Download or read book Lost Secrets of the Sacred Ark written by Laurence Gardner and published by HarperCollins UK. This book was released on 2004 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Ark of the Covenant is the source of one of the deepest mysteries of the Western world. Laurence Gardner has accessed Rosicrucian archives to reveal where the Ark is, what it is and how this lost secret of the distant past has led to the phenomenal new science of space-time manipulation.
Book Synopsis UFOs are Real by : Clifford E. Stone
Download or read book UFOs are Real written by Clifford E. Stone and published by S.P.I. Books. This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Encounter with Tiber by : Buzz Aldrin
Download or read book Encounter with Tiber written by Buzz Aldrin and published by Open Road Media. This book was released on 2013-05-28 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt: An Apollo 11 astronaut and the Nebula Award–nominated author of Directive 51 present a novel that “conveys the wonder and promise of space” (Publishers Weekly). Born the year of the Moon landing, Chris Terence spends his life fighting to return humanity to that pinnacle. An engineering student with dreams of spaceflight, he finds upon graduation that the United States no longer has need for astronauts. Years of bureaucratic meddling have reduced the space program to a shell of itself, and it will take the greatest scientific find in history to send humanity skyward once more. After years battling budget hawks, Chris finally gets his chance to walk on the Moon. While there, he finds evidence of an ancient alien civilization, the Tiberians, who visited Earth’s satellite eight thousand years before. Understanding what happened to those long-forgotten travelers will define the lives of Chris and his son, as they fight against all odds to unlock the secrets of the universe. “The collaboration of the first man to pilot a moon lander (Aldrin) with a major voice in contemporary science fiction (Barnes) has produced a fascinating chronicle of man’s first encounter with alien intelligence” (Booklist).
