t Britain in 1866. Wenham’s paper on Aerial Locomotion read at the first meeting of the Society, which was held at the Society of Arts under the Presidency of the Duke of Argyll, was the means of bringing Stringfellow back into the field. It was Wenham’s suggestion, in the first place, that monoplane 杭州萧山区夜网 design should be abandoned for the superposition of planes; acting on this suggestion Stringfellow constructed
a model triplane, and also designed a steam engine 杭州spa会所推荐 of slightly over one 杭州spa哪里可以口 horse-power, and a one horse-power copper boiler and fire box which, although capable of sustaining a pressure of 500 lbs. to the square inch, weighed only about 40 lbs.
Both the engine and the triplane model were exhibited at the first Aeronautical 杭州男士会所哪个好推荐 Exhibition held at the Crystal Palace in 1868. The triplane had a supporting surface of 28 sq. ft.; inclusive of engine, boiler, fuel, and water its total weight was under 12 lbs. The engine worked two 21 in. propellers at 600 revolutions per minute, and developed 100 lbs. steam pressure in five minutes, yielding one-third horse-power. Since no free flight was allowed in the Exhibition, owing to danger from fire, the triplane was suspended from a70 wire in the nave of the building, and it was noted that, when running along the wire, the model made a perceptible 杭州品茶上课微信群 lift.
A prize of ￡100 was awarded to the steam engine as the lightest steam 杭州品茶大学生 engine in proportion to its power. The engine and model together may be reckoned as Stringfellow’s best achievement. He used his ￡100 in preparation for further experiments, but he was now an old 杭州品茶网 man, and his work was practically done. Both the triplane and the engine were eventually bought for the Washington Museum; Stringfellow’s earlier models, together with those constructed by him in conjunction with Henson, remain in this country in the Victoria and Albert Museum.
John Stringfellow died on December 13th, 1883. His place in the history of aeronautics is at least equal to that of Cayley, and it may be said that he laid the foundation of such work as was subsequently accomplished by Maxim, Langley, and their fellows. It was the coming of the 杭州品茶上课 internal combustion engine that rendered flight practicable, and had this prime mover been available in John Stringfellow’s day the Wright brothers’ achievement might have been antedated by half 杭州品茶西湖 a century.
V WENHAM, LE BRIS, AND SOME OTHERS
There are few outstanding events in the development of aeronautics between Stringfellow’s final achievement and the work of such men as Lilienthal, Pilcher, Montgomery, and their kind; in spite of this, the later middle decades of the nineteenth century witnessed a considerable amount of spade 杭州品茶微信 work both in England and in France, the two countries which led in the way in aeronautical development until Lilienthal gave honour to Germany, and Langley and Montgomery paved the way for the Wright Brothers in America.
Two abortive attempts characterised the sixties of last century in France. As regards 杭州419公交车路线查询 the first of these, it was carried out by three men, Nadar, Ponton d’Amecourt, and De la Landelle, who conc