The Invention of the Airplane

ThesuccessfulinventionofthemotorizedairplanebyWilburandOrvilleWrightintheearlytwentiethcenturyrepresentsamonumentalleapinhumanengineering,fulfillingadreamofpoweredflightthathumanityhadchasedsincethedaysofancientmythology.Unlikemanyoftheirheavilyfundedcompetitorswhofocusedalmostentirelyonbuildingpowerful,heavyengines,theWrightbrothers,whowereskilledbicyclemechanicsfromOhio,correctlyidentifiedthataerodynamiccontrolwasthetruekeytosustainedaviation.Theyrealizedthatapilotneededtoconstantlybalancetheaircraftinthreedistinctdimensions—pitch,roll,andyaw—justlikeridingabicycle.Tosolvethisincrediblycomplexproblem,theyinventedarevolutionarysystemknownaswing-warping.Byutilizingasystemofcablesandpulleys,thepilotcouldphysicallytwisttheflexibleedgesofthecanvaswings,increasingtheaerodynamicliftononesideoftheaircraftandforcingitintoasmooth,controlledbankingturn.Beforeeverattemptingtoinstalladangerousmotor,thebrothersspentyearsrigorouslytestingtheirtheories.Theybuiltacustomwindtunnelintheirsmallbicycleshop,meticulouslytestinghundredsofminiaturewingshapestocalculateaccuratecoefficientsofliftanddrag.Theythentraveledtotheremote,wind-sweptsanddunesofKittyHawk,NorthCarolina,wheretheysuccessfullyflewdozensofunpoweredgliderstoperfecttheirsteeringmechanisms.Oncetheyhadmasteredtheaerodynamicglide,theyfacedanewproblem:noautomobilemanufacturercouldprovideanenginethatwasbothpowerfulenoughtolifttheaircraftandlightenoughtofly.Consequently,theydesignedandbuilttheirowncustomfour-cylinderaluminumengine,whichwasaremarkableengineeringfeatinitsownright.Theyalsohand-carvedtwohighlyefficientwoodenpropellers,realizingthatapropellerisessentiallyarotatingwingthatgeneratesthrustratherthanupwardlift.Onafreezing,windymorninginDecemberofnineteenhundredandthree,OrvilleWrightlayflatonhisstomachonthelowerwingoftheFlyer,startedthenoisyengine,andaccelerateddownawoodenlaunchingrail.Theaircraftliftedintotheairandflewunderitsownpowerfortwelveseconds,coveringamodestdistanceofonehundredandtwentyfeet.Whiletheflightwasbrief,itprovedconclusivelythatheavier-than-air,controlled,motorizedflightwasabsolutelypossible,foreverchangingthetrajectoryofglobaltravel,commerce,andmodernwarfare.