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Aerial Navigation

Aerial Navigation image
Parent Issue
Public Domain
OCR Text

Ti3 essence of Professor Wullner's innovation is bis invención of the sail wbeel. Í6 cousists of a horizontally placed axis witli spokes and arched aeroplanos attaehed to them in a cylindrical form. Wliile revolving round the axis the latter take a slightly slantin;; posición, which causes the forward edgos of these surfaces to beinchned, andconsoquently to compress the air in the way of a sail or a kite, calling into play the vertical forcé. ïhree ribs running across eaoh lifting surface and made in the form of a screw at the same time serve to strengthen the aeroplanos andto add to the horizontal force. These sail wheels set in pairs can be placed, according to the size of airship aimed at, in one or more groups of two wheels, revolviug in opposite directions, behind or beside each other. The cigar shaped car, furnished with a motor and carrying the aeronauts, is attaehed horizonta! ly under the center of tho wheels, 60 that tha whole coustruction will resemble a solossal bird, propelled, inetead of' by wnigs, by revolving wheels, the lifting surfaces of which are consecutively and constantly developing vertical and horizontal power The bird's movoment3 in flying and the speedy headway motiou necessary to the kite flyiug machines for their support ín the air are in Professor Weilner's invention changed to a rotary motion. This construction, while permitting of an easy, fIow ascent, assurea the horizontal position and constant stability of the airship, at the same time permitting of a high velocity. The more the latter is increased the stronger is tho liftiug power developed. Tbe direction is given by a rudder at the end of the ship or by increasing the velocity of the sail wheels on ono side only. It is the peculiar quality of these wheels that they do not, as might be Btipposed, disperse the air around them. They rather attract it toward theix rapidly moving surface, coudensing it to a powerfnl stream, which passes down obliquely througb thefr cylinders Their velocity can be made to surpass by far that of raüway traius, thns enabhiif them to couquer contrary wiuds and air


Ann Arbor Argus
Old News