Designation:F2506−13StandardSpecificationforDesignandTestingofLightSportAircraftPropellers1ThisstandardisissuedunderthefixeddesignationF2506;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoverstheestablishmentofthemini-mumrequirementsforthedesign,testing,andqualityassur-anceoffixed-pitchorgroundadjustablepropellersforlightsportaircraft.Thesepropellersareusedonlightaircraft,andcouldbeusedwithenginesconformingtoPracticeF2339.1.1.1WhenapplyingtheadditionsprovidedinAppendixX1,thisspecificationalsocoverstheestablishmentoftheminimumrequirementsforthedesign,testingandqualityassuranceofin-flightadjustablepropellersforlight-sportaircraft.1.2Thisspecificationisintendedforusebymanufacturersofpropellersforlightsportaircraft.1.3Thisspecificationdoesnotaddresstheairframeinstal-lationrequirementsforpropellers.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesandtodeterminetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2F2339PracticeforDesignandManufactureofReciprocat-ingSparkIgnitionEnginesforLightSportAircraft3.Terminology3.1Definitions:3.1.1blade,n—theaerodynamicportionofapropellerwhichisrotatedthroughandactsontheair.3.1.2bladeroot,n—theportionofthebladethatinterfaceswiththehubandprovidesretention.3.1.3conventionalfixedpitchpropeller,n—aone-piecefixedpitchpropellerthatisconstructedofmaterialsuchaswoodormetalthathasnoabruptchangesinmaterialpropertiesasthebladestransitionthroughthehubarea.3.1.3.1Discussion—Apropellerwithwoodenbladesbondedtoametallichubwouldnotbeconventional.3.1.4fixedpitchpropeller,n—apropellerwithnocapacityforpitchsettingadjustment.3.1.5groundadjustablep...
