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This open access book presents the findings of Collaborative Research Center Transregio 40 (TRR40), initiated in July 2008 and funded by the German Research Foundation (DFG). Gathering innovative design concepts for thrust chambers and nozzles, as well as cutting-edge methods of aft-body flow control and propulsion-component cooling, it brings together fundamental research undertaken at universities, testing carried out at the German Aerospace Center (DLR) and industrial developments from the ArianeGroup. With a particular focus on heat transfer analyses and novel cooling concepts for thermally highly loaded structures, the book highlights the aft-body flow of the space transportation system and its interaction with the nozzle flow, which are especially critical during the early phase of atmospheric ascent. Moreover, it describes virtual demonstrators for combustion chambers and nozzles, and discusses their industrial applicability. As such, it is a timely resource for researchers, graduate students and practitioners.
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American Motorcyclist magazine, the official journal of the American Motorcyclist Associaton, tells the stories of the people who make motorcycling the sport that it is. It's available monthly to AMA members. Become a part of the largest, most diverse and most enthusiastic group of riders in the country by visiting our website or calling 800-AMA-JOIN.
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Following in the footsteps of Life's Little Instruction Book, this compendium of 300 easy, accessible ways to relax gives the physical, mental and spiritual comfort needed to cope with today's stressful lifestyle. Illustrated.
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President Eisenhower, who was not always the best student, once wrote, "One cannot always read a man's future in the record of his younger days." Indeed, this review of the classroom experiences of presidents and first ladies from George and Martha Washington to Barack and Michelle Obama reveals that few made model students. Teachers reported that John F. Kennedy could "seldom locate his possessions," found George H.W. Bush "somewhat eccentric," and dubbed a sixth-grade Bill Clinton "a motormouth." In addition to chronicling the school days of these historic figures, this volume also relates their teaching experiences, the educational issues they addressed during their White House years, and intricacies of education at their time in history, providing an informative overview of American schooling over time.