Show Map InviSible ible Plane Plena Tracks nl dOr tor II Ills hs Device Devito Called C fire mr in Blind Flying Britain's Secret WASHINGTON WASHINGTON WASHINGTON-A A device to put airplanes on Invisible tracks track that lead them as surely to their desti nation na as rails rail do trains train was wu the answer given Iven by Dudley H Toner Toller- Bond British engineer to the blind flying dying and airport rt congestion rId rId- Bond Toller-Bond has bas Si radio a lo device cal Cal Cal- Calculated aJ- aJ to proY schedule reliability ity and frequency His HI device was wu one on of Britain's Britain top drawer top top-dra wartime e It was Britain's Britaina because American engi engi- engineer neer told William Wil OBrien O'Brien Chi cago its It inventor that it would not work OBrien O'Brien convinced the admiralty ad ad- ad admiralty otherwise Heres Here's Here what happens ens Air tracks track any any number of them in fa contrast with present are limitations are laid out between cities aides on cn n a Snag In Instrument ment weather a I pilot Is assigned a track say ay between between n Washington and New York Keep f I Pointing In his cockpit la is I a dial and as a long as aI ha he h keeps the needle pointing to zero be will fly dy around all ail ter ter- terrenal reUal renal obstacles such luch as af the Empire State Stat building and conje come came in directly over the airport U H the is i under a low l w coil cell log Ing In and landings are delayed the pilot flips a switch keeps the needle on zero and If ii shunted to toan an orbit where he lie can await landing landin directions v Three radio transmitters are ara In in- in instated stated stalled on ihs round nd fa q cover OVer aa as area rea about bout the ill bi of It that between Washington and net Boston Bo t FI Their Theft sig ST r re j picked up by a pound SO-pound pound radi f i Celver e Jn the plane Before tsi 1 lIot inserts al roD iron of film dim in n control AI unit On the rn marks mira ap- ap apU U abl e only je O trick track allotted to the plane K- K Kb Ini KAs h b As M the film turns turu in no relation to the j speed of the plane the marks mark work in to conjunction with lh electrical Output t of the t l control O the theD D th I Keep Keep th the thi De faro ro and you JOU win WUl always fallow t line Una lID Deviations of ot of only yards anil ardi win WiD show on oil the th the dial CU As Ls to Bad flea Weather iller a says be ha could lay JaJou wA atta tt k J 1109 rifles wid wide between N New w York ork Uc 1 Angeles The Tha tama fth In III bad bid weather weathers th I a large lar number at rf planes plane could coul guy fly aide l by side hii safe tug ing the the other at et jn a I se- se so rOC because of ot the likelihood lI kit tet lem at various a aJ X J M a V W Th tJ nay milt leafy plants planes tt but et oti them th W i r g t io an or or- orbit bit ther 1 1 t r ct TM for airy om mara mark for tor that IO 6 s U If t for instance Instructs tb the allot to take orbit 10 he be switches his baI hi orbit se p- p lector to No 10 10 keeps keep the dial needle on zero sero and md automatically Roes goes into that orbit Bond Toller-Bond TO once onel flew miles mU blind blind and snapped a picture over the dead deeS Center ent enter r of ot Antwerp cathedral Its I a world beater for blind fly fly- flyIng fly Ing In he be said paid U lithe If the FCC win grant the necessary frequencies s for his hi transmitters he hili hopes hope io E o convince I th the airlines that he is ie f tight right l th |