PDF-[BOOK]-Birdflight As the Basis of Aviation: A Contribution Towards a System of Aviation

ONE OF THE MOST IMPORTANT BOOKS EVER PUBLSHED its the work of a creative genius whose observation analysis ingenuity and daring laid the foundation for the development of aviation It includes over 100 fascinating drawings graphs and diagrams as well as engineering analyses and many historic photographs of Lilienthal flyingin the 1890s as well as a handy index After a comprehensive scientific study of how birds fly Lilienthal recognized the superiority of curved wing surfaces and then developed a theory of flight From 1891 to 1896 he designed built and flew a series of hanggliders becoming the first man to fly He made over 2000 glidesbridging the gap between those who dreamed of flying and those who actually flew Learning of Lilienthals tragic fatal gliding accident of August 9 1896 the Wright Brothers became inspired to investigate the problem of human flight Moved by his last words Sacrifices must be made Lilienthals work had a tremendous influence on the Wrights who considered him a hero They carefully studied his work developed their own theories and designs and invented the airplane WILBUR WRIGHT PRAISES OTTO LILIENTHAL FOR HIS CONTRIBUTIONS TO AVIATION Wilbur wrote this short article about what Otto meant to him just a few days before he took ill and died of typhoid fever on May 30 1912 It was published posthumously in the September 1912 issue of The Bulletin of the Aero Club of America Of all the men who attacked the flying problem in the 19th century Otto Lilienthal was easily the most important His greatness appeared in every phase of the problem No one equaled him in power to draw new recruits to the cause no one equaled him in fullness and dearness of understanding and the principles of flight no one did so much to convince the world of the advantages of curved wing surfaces and no one did so much to transfer the problem of human flight to the open air where it belonged As a missionary he was wonderful He presented the cause of human flight to his readers so earnestly so attractively and so convincingly that it was difficult for anyone to resist the temptation to make an attempt at it himself even though his sober judgment and the misfortunes of all predecessors warned him to avoid touching it If Lilienthal had done nothing more than this he still would have been one of the greatest contributors to the final success But he was much more than a missionary As a scientific investigator none of his contemporaries was his equal He set forth the advantages of arched wings in such convincing manner as to make him the real originator of this feature Others had noted that birds wings were arched and had speculated on the possibility that an arched wing was superior to an absolutely true plane but Lilienthal demonstrated the reason why it was better and changed mere speculation into accepted knowledge He also devoted an enormous amount of time and patience to experiment with test surfaces for the purpose of determining the best shapes for wings and for the amount of pressures to be obtained at the various angles of incidence For nearly twenty years his tables and charts were the best to be found in print His work in this line alone would have been sufficient to place Lilienthal on the front rank yet there still remains to be mentioned his greatest contribution to the cause Lilienthal was the real founder of outofdoor experimenting Wilbur Wright It is hoped that repunlishing this great book will give 21st Century people a genuine appreciation of what Otto Lilienthal did for mankind. 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