. American engineer and railroad journal . t his trips wouldprobably be short, and the consequences might be unpleas-ant were the machinery to break down while he is has, accordingly, with great good judgment, begun byapplying his steam engine to an aeroplane, although thiswill involve greater difficulties in starting and in landing,as well as a less immediate demonstration. Almost the only memento which now remains of themovement in favor of the aerial screw inaugurated byAadar is the model of the flying machine designed by theViscount de Ponton d ylniicoitrf, and which is shown infi
. American engineer and railroad journal . t his trips wouldprobably be short, and the consequences might be unpleas-ant were the machinery to break down while he is has, accordingly, with great good judgment, begun byapplying his steam engine to an aeroplane, although thiswill involve greater difficulties in starting and in landing,as well as a less immediate demonstration. Almost the only memento which now remains of themovement in favor of the aerial screw inaugurated byAadar is the model of the flying machine designed by theViscount de Ponton d ylniicoitrf, and which is shown infig. 28. The following description is translated from thatof M. Tissandier : Vol. LXVI, No. 3.] ENGINEERING JOURNAL. 135 M. de Ponlpii dAmtcourt constructed, in 1865, anaerial screw machine worked by , which was ex-pected to rise with both its motor .ind its steam beautiful little model, which was exhibited at theLondon Aeronautical ICxposition in 1S68, is exquisitelyfinished. The boiler and frames are of aluminium, and. Fig. :i. the steam cylinders are of bronze. The reciprocatingmovement of the pistons is transmitted by gearing to adouble pair of superposed screws of 41 sq. in. surface,one rotating in a diUerent direction from the other. Theapparatus, which is now in the collection of the FrenchSociety for .lerial Xavigation, weighs, without water orfuel, lbs. The boiler is 3J in. high and 4 in. in diame-ter ; the total height is 24I in. Unfortunately the boilercannot be worked at sufficient pressure ; when the ma-chine is put into motion it possesses a certain ascensionalforce ; it loses weight, but it does not rise. The illustrated papers also published about 1865 viewsof a great steam Hying machine, attributed to M. de laLandelle. These showed a hull flanked with aeroplanes,and surmounted with two masts, each carrying four setsof screws, and also a partly folded umbrella, presumablyto open into a parachute, ft is to be found reproduc
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
