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Liquid hydrogen is shown to be the ideal fuel for civil transport aircraft, as well as for many types of military aircraft. Hydrogen Aircraft Technology discusses the potential of hydrogen for subsonic, supersonic, and hypersonic applications. Designs with sample configurations of aircraft for all three speed categories are presented, in addition to performance comparisons to equivalent designs for aircraft using conventional kerosine-type fuel and configurations for aircraft using liquid methane fuel. Other topics discussed include conceptual designs of the principal elements of fuel containment systems required for cryogenic fuels, operational elements (e.g., pumps, valves, pressure regula...
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Wild and wooly recollections from the Florida frontier Cracker Times and Pioneer Lives brings together the reminiscences of two pioneers who came of age in antebellum Florida's Columbia County and the nearby Suwannee River Valley. Though they held markedly different positions in society, they shared the adventure, thrill, hardship, and tragedy that characterized Florida's pioneer era. With sensitivity, poignancy, and humor, George Gillett Keen and Sarah Pamela Williams record anecdotes and memories that touch upon important themes of frontier life and reveal the remarkable diversity of Florida's settlers. Keen's story typifies that of many "Cracker" families. Born in Georgia, he moved with h...
Reprint of the original, first published in 1875.
Reprint of the original, first published in 1875.
During the eighteenth-century, at a time when secular and religious authors in France were questioning women’s efforts to read, a new literary genre emerged: conduct books written specifically for girls and unmarried young women. In this carefully researched and thoughtfully argued book, Professor Nadine Bérenguier shares an in-depth analysis of this development, relating the objectives and ideals of these books to the contemporaneous Enlightenment concerns about improving education in order to reform society. Works by Anne-Thérèse de Lambert, Madeleine de Puisieux, Jeanne Marie Leprince de Beaumont, Louise d'Epinay, Barthélémy Graillard de Graville, Chevalier de Cerfvol, abbé Joseph...