 | Perry Fairfax Nursey - 1827 - 472 pàgines
...half above the level of their joints ; he must then, with a brisk exertion, pull the lever backward^, eighteen inches past the perpendicular line, and the...will be struck downwards, passing through an arch pf seven feet ; an3 suddenly driving down and compressing the air in that arch, part of which will... | |
 | 1835 - 430 pàgines
...upon the ground, one six feet high and the other four and a half, at twelve feet distance from each wars of infant nations. " It came to pass in the...these made war with Bera king of Sodom, and with described before,) making at the same time a reaction which will push the wings forward : and as the... | |
 | 1835 - 430 pàgines
...upon the ground, one six feet high and the other four and a half, at twelve feet distance from each other ; then lay upon them two or three planks which...which will escape past the back edge of the wings (as described before,) making at the same time a reaction which will push the wings forward : and as the... | |
 | Encyclopaedia - 1845 - 852 pàgines
...from its perpendicular line; the tips of the wings will then rise three feet and a half above tlie level of their joints. He must then, with a brisk exertion, pull the lever backwards eighteen inches pust its perpendicular, and the tips of the wintjs will be struck '200 F О А j downwards, through... | |
 | Aeronautical Society of Great Britain - 1877 - 556 pàgines
...upon the ground, one six feet high and the other four-anda-half, at twelve feet distance from each other ; then lay upon them two or three planks, which...I have described before), making at the same time a reaction which will push the wings forward : and as the car and the wings are first placed on an... | |
 | 1894 - 642 pàgines
...upon the ground, one six feet high and the other four and a half, at twelve feet distance from each other ; then lay upon them two or three planks, which...I have described before), making at the same time a reaction which will push the wings forward : and as the car and the wings are first placed on an... | |
 | Francis Herbert Wenham - 1910 - 168 pàgines
...8). When the car is brought to a sufficient altitude," etc. — EDS. No. 6 NO. 10 No. 12 from each other ; then lay upon them two or three planks, which...I have described before), making at the same time a reaction which will push the wings forward : and as the car and the wings are first placed on an... | |
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... before the car is placed there ; being thus elevated he will have depth enough on each side of the car to admit of his wings striking upon the air. He must then push the lever forward about eighteen inches from its perpendicular line, the tips of... 