. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . without being able to Jiesearches on Mechanical Flight.—Prof. !S. P. Langley has made a seriesof investigations which show that, with motors having the same weights as those actually con-structed, we possess at present the necessary force forsustaining, with very rapidmotion, heavy bodies in theair; for example, inclinedplanes more than a thousandtimes denser than the me-dium in which they move.
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . without being able to Jiesearches on Mechanical Flight.—Prof. !S. P. Langley has made a seriesof investigations which show that, with motors having the same weights as those actually con-structed, we possess at present the necessary force forsustaining, with very rapidmotion, heavy bodies in theair; for example, inclinedplanes more than a thousandtimes denser than the me-dium in which they , from the point ofview of these experimentsand also of the theory un-derlyiTig them, it appears tobe demonstrated that if, inan aeiial movement we, havea plane of determined di-mensions and weight, inclinedat such angles and movingwith such velocities that it isalways exactly sustained inhorizontal flight, the morethe velocity is augmented, thegreater is the force necessaryto diminish the sustainingpower. It follows tiiat therewill be increasing economy of force for each augmentation of velocity, up to a certain limitwhich the experiments have not yet starting Trouv<;s bini.
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
