Show I I La Lal Laigei ! gel Army An Au planes planesIhit planesHj\e planesHj e II\ II Ihit IIe . \ e Many Ne New Nets " DevicesWasi Devices DevicesWas IWasl Was Wasl Wasi ! IngtonFour ington -Four Four - Four hundred and andI andten andten andten ten a rplanes delivered by manufac manufacturers manufacturers manufachirers turers to the Un ted Stales States army armydurmg armyduring armyduring durmg during the calendar year 1937 were weretWIce weretwice weretwice tWIce as large as their ImmedIate ImmedIatepredecessors immediatepredecessors immediatepredecessors predecessors Brig Gen A W Rob RobIDS Robins Robins IDS ins clle cl ci ief let ! of the materials divis dlvls dives on ondeclared ondeclared ondeclared declared hereScores hereScores here hereScores Scores of ot new devices tested and andfound andfound andfound found sat sfactory have been made madestandard madestandard madestandard standard cqu equ pment on new planes planeswh planeswh planeswh wh Ie le a systematic testing testmg program programis IS leading to Important Improve Improvements improvements improvements ments In military craftThe craftThe craft craftThe The materials d vision is sponsor sponsorIng sponsoring sponsorIng Ing tests of ot o1 a novel set of propelIcrs propellers propelIcrsone propellersone propellersone one mounted immediately in front frontof frontof frontof of the other on concentric concentnc propeller propellershafts propellershafts propellershafts shafts General Robins Robms revealed revealedThe revealedThe revealedThe The propellers rotate in oPPosIte oPPosItedirections oppositedirections oppositedirections directions Controllable pitch pltch eon con eoncentric concentric concentric centric propellers propelIers are now being bemg de designed designed designed signed he addedTIres addedTires added addedTires Tires and tubes which will seal sealthemselves sealthemselves sealthemselves themselves after be ng rig puncturedby punctured puncturedby by bullets are under development developmentArmy developmentArmy developmentArmy Army engineers engmeers arc are studying studymg a de dev dev dev v ce cc wh ch automatically automahcally brings bringsback bringsback bringsback back a badly oprrat opprat operat ng rig mach ne gun gunmto guninto guninto mto into full operation |