Show I I SUCTION DOES MOST TO KEEP PLANE IN AIR DAYTO DAYTON 0 0 Jan What I-What l up an airplane lano Buoyancy Both noth guesses eue ei are aro ro wrong wrone Suction on the top surface of othe the wing wine provides 75 per cent or of orthe othe the sustaIning power that keeps the plans from fluttering down The wing wIngs wIng's front edge edee la Is like the sharp tharp edge of ot a wedge and the thIckness reaches reache Its maxi maximum mum mEal a few Inches back Then the top surface slopes elopes down to athin a 5 thin rear edge The wedge edge splits the air and sends It streaming back and up In practically a straight line The swift rush of ot air all creates create a x par par- partial hal vacuum just ju t above abOTO the tile sur- sur surface surface face Bur face of o the wing wine and back of o the thickest part It Is this partial vacuum that does three-fourths three or of othe the trick dynamic aero engineers at the government flying fields here bere assert Buoyancy they ad admit mit does the rest rett e |