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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...
An important reassessment of the afterlife of the Enlightenment and its continuing relevance in twenty-first century France.
Reprint of the original, first published in 1875.
Reprint of the original, first published in 1875.