Show MORE AEROPLANES NO NO TRIED Government Experiments Are Proving Far More Satis Satis- factory NEW IN MANY DEVICES New Models Model of Prof Wood Show Willingness to Fly FlyTh Th Through rough Air Baltimore Md Id Md March 31 01 Dr Robert flobert W. W Wood 1 professor sor of m physics in the Johns John Hopkins Il and Otto skillful university a mechanical engineer of Baltimore hope the they have solved the problem In aerodynamics upon which Professor sor Langley Lang failed tailed and which Santos- Santos E has lias not yet et succeeded In un un- un- un raveling Professor Wood Is the successor to the late Professor H. H A. A Rowland nowland the Inventor of the famous spectroscope grating machines known to all physicians physicians phy phy- and tho the multiple telegraph mph system now being introduced in the various arlous countries of oC Europe The type of machine upon which Professor Wood and Mr 11 are arc areat areat at work Is used on the helicopter It Is entirely different from the balloon type typo and belongs to what Is known as the heavier than air class of airships airships airships air air- ships now attracting attracting- tho the attention of or orall all who are Interested ted In aerial navi navi- gation It properly belon belongs s to the same class with the which waRthe was waR the object of extensive experiments b by bythe bythe the late Professor Langley ley of Washington Wash Wash- ashington ash ington The Langley airship however has several drawbacks drawback the most serious ser Eel ious bus of oC which I is the difficulty of makIng making mak oak ing lug landings because of or the extreme high rate of horizontal velocity which I Is absolutely necessary to keep Jeep up In order that tho the ship ma may sustain Itsel it itself itself It- It self sel in the air How lIow It I Differs Tho The helicopter In the first place has no stationary supporting surface such as is required In the which maintains Its position In the theair air nir by several pairs of hugh wings wing's and the high h rate of ot velocity at which it is drawn In the ship upon which th they jo are arc now working an engine weighing about pounds and capable capable cap cap- able of or generating power horse at atthe atthe atthe the beginning will be used This high h power horse-power will be maintained for a afew afew afew few minutes until as it will soon re reduce reduce reduce re- re duce to forty or fifty power horse-power to the high grade o of pressure The Tho ship is to be lifted too b by the power of Its engine and ani movement when in the theair theair theair air will be obtained by what is known as the lifting powers po of ot its revolving propellers These Thee propellers will be beat beat beat at least fort forty feet In diameter and the they will consist of or light metal frames covered with witha 1 a JI light h b but strong t g fc fab fabric OI ric fo foet et i v j. f It can bo be stopped stop Atop ped In midair mid and still keep Its elevation eleva cle lion tion whereas the must descend descend de tie- as soon as all of ot its motive power pow pow- er is cut off |