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PARACHUTE (from Ital. parare, to shie...

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Originally appearing in Volume V20, Page 751 of the 1911 Encyclopedia Britannica.
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PARACHUTE (from Ital. parare, to See also:shield, protect; cf. " See also:parasol," " See also:parapet," and Fr. chute, a fall)  , an See also:instrument more or less resembling a large See also:umbrella, which by the resistance it offers to the See also:air enables an aeronaut attached to it to descend safely from a See also:balloon or flying See also:machine in the air . The principle of the See also:parachute is so See also:simple that the See also:idea must have occurred to persons in all ages . See also:Simon de la Loubere (1642–1729), in his See also:History of See also:Siam (See also:Paris, 1691), tells of a See also:person who frequently diverted the See also:court by the prodigious leaps he used to take, having two parachutes or umbrellas fastened to his See also:girdle . In 1783 Sebastien Lenormand practically demonstrated the efficiency of a' parachute by descending from the See also:tower of See also:Montpellier See also:observatory; but he merely regarded it as a useful means whereby to See also:escape from See also:fire . To J . P . See also:Blanchard (1753–1809) is due the idea of using it as an See also:adjunct to the balloon . As See also:early as 1785 he had constructed a parachute to which was attached a See also:basket . In this he placed a See also:dog, which descended safely to the ground when the parachute was released from a balloon at a considerable See also:elevation . It is stated that he descended himself from a balloon in a parachute in 1793; but, owing to some defect. in its construction he See also:fell too rapidly, and See also:broke his See also:leg . See also:Andre Jacques Garnerin (1769–1823) was the first person who successfully descended from a balloon in a parachute, and he repeated this experiment so often that he may be said to have first demonstrated the practicability of using the machine, though his See also:elder See also:brother, J . B .

O . Garnerin (1766–1849), also claimed a See also:

share in the merit of perfecting it . In 1793 he was taken prisoner at Marchiennes, and while in captivity at See also:Bude (See also:Budapest) thought out the means of descending from a balloon by means of a parachute . His first public experiment was made on the 22nd of See also:October 1797 . He ascended from the See also:park of Monceau, at Paris, and at the height of about i4 m. he 7eleased the parachute, which was attached to the balloon in See also:place of a See also:car; the balloon, relieved suddenly of so See also:great a See also:weight, See also:rose very rapidly till it burst, while the parachute descended very fast, making violent oscillations all the way . Garnerin, however, reached the See also:earth in safety . He repeated his parachute experiment in See also:England on the 21st of See also:September 1802 . The parachute was See also:dome-shaped, and See also:bore a resemblance to a large umbrella (fig . 1) . The See also:case or dome was made of See also:white See also:canvas, and was 23 ft. in See also:diameter . At the See also:top was a See also:truck or See also:round piece of See also:wood To in. in diameter, with a hole in its centre, fastened to the canvas by 32 See also:short pieces of tape . The parachute was suspended from a hoop attached to the netting of the balloon, and below it was placed a cylindrical basket, 4 ft .

high and 24 ft. in diameter, which contained the aeronaut . The ascent took place at about six o'See also:

clock from See also:North See also:Audley See also:Street, See also:London; and at a height of about (it is believed) 8000 ft . Garnerin separated the parachute from the balloon . For a few seconds his See also:fate seemed certain, as the parachute retained the collapsed See also:state in which it had originally ascended and fell very rapidly . It suddenly, however, See also:expanded, and the rapidity of its descent was at once checked, though oscillations were so violent that the car, which was suspended 20 ft. below, was sometimes on a level with the See also:rest of the apparatus . Some accounts state that these oscillations increased, others that they decreased as the parachute descended; the latter seems the more probable . It came to the ground in a See also:field at the back of St Pancras See also:Church, the descent having occupied rather more than ten minutes . Garnerin was hurt a little by the violence with which the basket containing him struck the earth; but a few cuts and a slight See also:nausea represented all the See also:ill effects of his fall . A few years later, Jordaki Kuparento, a See also:Polish aeronaut, made real use of a parachute . He ascended from See also:Warsaw on the 24th of See also:July 1808, in a fire-balloon, which, at a considerable elevation, took fire; but he was able to effect his descent in safety by means of his parachute . The next experiment made with a parachute resulted in the See also:death of See also:Robert Cocking, who as early as 1814 had become interested in the subject . The great defect of Garnerin's umbrella-shaped parachute had been its violent oscillation during descent, and Cocking considered that if the parachute were made of a conical See also:form (vertex downwards) the whole of this oscillation would be avoided; and if it were made of sufficient See also:size there would be resistance enough to check too rapid a descent .

He therefore constructed.a parachute on this principle (fig.2), the See also:

radius of which at its widest See also:part was about 17 ft . It was stated in the public an- nouncements previous to the experiment that the whole weighed 223 lb; but from the See also:evidence at the See also:inquest it appeared that the weight must have been over 400 lb exclusive of Cocking'sweight,which was 177 lb . On the 24th of July 1837, the See also:Nassau balloon, with See also:Charles See also:Green, the aeronaut, and See also:Edward See also:Spencer, a solici- tor, in the car, and having suspended below it the parachute, See also:PARADISE 751 in the car of which was Cocking, rose from See also:Vauxhall Gardens, London, at twenty-five minutes to eight in the evening . A See also:good See also:deal of difficulty was experienced in rising to a suitable height, partly in consequence of the resistance to the air offered by the expanded parachute, and partly owing to its weight . Cocking wished the height to be 8000 ft.; but when the balloon reached the height of 5000 ft., nearly over See also:Greenwich, Green called out to Cocking that he should be unable to ascend to the requisite height if the parachute was to descend in daylight . Cocking accordingly let slip the catch which was to liberate him from the balloon . The parachute for a few seconds descended very rapidly, but still evenly, until suddenly the upper rim seemed to give way and the whole apparatus collapsed (taking a form resembling an umbrella turned inside out, and nearly closed), and the machine descended with great rapidity, oscillating very much . When about 200 or 300 ft. from the ground the basket became disengaged from the remnant of the parachute, and Cocking was found in a field at See also:Lee, literally dashed to pieces . Many objections were made to the form of Cocking's parachute; but there is little doubt that had it been constructed of sufficient strength, and perhaps of somewhat larger size, it would have answered its purpose . See also:John See also:Wise (1808–1879), the See also:American aeronaut, made some experiments on parachutes of both forms (Garnerin's and Cocking's), and found that the latter always were much more steady, descending generally in a See also:spiral See also:curve . A descending balloon See also:half-full of See also:gas either does rise, or can with a little management be made to rise, to the top of the netting and take the form of a parachute, thus materially lessening the rapidity of descent . Wise, in fact, having noticed this, once purposely exploded his balloon when at a considerable See also:altitude, and the resistance offered to the air by the envelope of the balloon was sufficient to enable him to reach the ground without injury .

In more See also:

recent times the use of the parachute has become fairly See also:common, but a good many serious accidents have occurred .

End of Article: PARACHUTE (from Ital. parare, to shield, protect; cf. " parasol," " parapet," and Fr. chute, a fall)
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