 | Aeronautics - 1894 - 642 pages
...With regard to another part of the first obstacle I have mentioned, viz.. the absolute, quantity of power demanded being so much greater at first than when the full velocity has been acquired; it maybe observed, that, in the case of human muscular strength being made use of, a man can exert, for... | |
 | James Means - Aeronautics - 1894 - 224 pages
...swift. With regard to another part of the first obstacle I have mentioned, viz. the absolute quantity of power demanded being so much greater at first than when the full velocity t has been acquired; it maybe observed, that, in the case of human muscular strength being made use... | |
 | Sir George Cayley, Bart - 1910 - 114 pages
...With regard to another part of the first obstacle I have mentioned, viz., — the absolute quantity of power demanded being so much greater at first than...seconds, a surprising degree of force. He can run upstairs for instance with a velocity of from 6 to 8 ft., perpendicular height, per second, without... | |
 | Aerodynamics - 2003 - 776 pages
...swift. With regard to another part of the first obstacle I have mentioned, viz. the absolute quantity of power demanded being so much greater at first than...perpendicular height per second, without any dangerous effort; here the muscles of his legs only are in action; but, for the sake of making a moderate statement,... | |
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... upon the principle of those birds which run themselves up. This action might be aided by making choice of a descending ground like the swift. With regard to another part of the first obstacle I have mentioned, viz. the absolute quantity of power demanded... 