Show New Plane With Movable Wings May Answer Dream of A Air ir Pilots A Ay Rr r NEA rEl St-nl St Service SAN SAX DIEGO Nov Ten 27 27 of ot patient research has haa led ledA ledA ledA A A Merrill l Instructor In aero aero- aeronautic aero aero- aeronautic aeronautic research at tho California Institute ot of Technology to the tho Invention In- In Invention in invention of ot an all airplane that seems seem to be bo the tho answer to the highest as- as aspirations aspirations as of ot aviators It rises rhea and alights In a horizon horizon- horizontal horizontal horizontal tal position Its lis nose never point point- pointing pointing ing up or down It cant can't stall etall Ita It will never novel go Involuntarily Into a nose nOle dive dhe It can stop atop short after aCter alighting by means ot of wing wings winge that can be turned vertically to act as I against the tho wind Wind gusts susa gus s cant can't upset it It can be controlled at very cry low speeds as an automobile Is fa con con- controlled con can controlled trolled through shifting shirting gears It can rise almost straight up bod body remaining horizontal yet with with- without with without out those clumsy looking pin wheel affairs atop helicopters MAKES IUS GOOD GOOf IN IX TEST In test flights here before arm army and navy air officers the airplane with movable wings performed as ae aswell aswell well as any plane piano with stationary wings wing It took off ote from the field rIsing horizontal as though some unseen hand were pulling pulling- It up- up upward upward up upward ward The pilot banked dipped and aown Inc g tiU an hour Were the tho machine built with a faster motor It could attain any speed reached by other planes but this little model 34 model feet between tween bet een wing Ing tips and 12 feet from front to rear rear rear-Is 1 eQuipped with a horsepower 45 motor It weighs only SOO pounds To Increase or decrease his hie alti- alti altitude alti altitude tude the pilot turns a a wheel at atthe atthe althe the side sido ot of the The wheel connects by 1 a chain with the wings and changes their position petitions and angles relative to the As Athis this occurs the added or decreased lifting ability ot of the wings allows allow the machine to rise or drop as the c may ma be Merrill l points out the necessity I I J 1 ts i h e I w wAr v Ar Arv Arro ro 3 H a wl p A A Merrill standing tan io beside his new tl-e tl of airplane I The wheel heel controlling rho of oC the wing and the tho difference In dec d c of oC the wings Ings mey 1 ho bo noted of a four degree differ differ- difference difference ence In the two wings wines At all allUmes times Umes he lie Sll'S the front surface must havo a four tour degree larger large angle ansle of or incidence than tho rear surface of ot tho the wings s KEEPS PLANE STABLE ST Lc There Thera mu must t be bo two supporting surfaces for tor this type of ot plane to tobo tobe tobo bo be successful success ul ho he says One must be bo placed ahead of ot the tho other oth- oth other oth other er This Is II called staggered stag the front surface must have a 11 larger larer angle anle of ot Incidence than the rear which we wo call With the proper stagger and such a biplane is statis statis- statistically statistically statistically stable In pitch under all conditions Wind gu gusts s cannot upset the machine for these havo rave tho the effect ot of moving the entire machine up or down It cannot be stalled Dialled until the operator loses control or be thrown Into a a nose noso lIve dive against the tho pilots pilot's will This plane has no control drag because the fuselage remains at all 11 times horizontal to the tho ground round and settles like a bird alighting Merrill likens tho the plane piano in to flight to a I bird In flight since a bird particularly tho the buzzard has lias wings ot of such construction that tho the air rolls up underneath and has hu the tendency to help propel It forward even in tho the absence of or other mo motive mo- mo tire the power |