ASTM_F_2506_-_13.pdf

Designation:F250613Standard Specification forDesign and Testing of Light Sport Aircraft Propellers1This standard is issued under the fixed designation F2506;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the establishment of the mini-mum requirements for the design,testing,and quality assur-ance of fixed-pitch or ground adjustable propellers for lightsport aircraft.These propellers are used on light aircraft,andcould be used with engines conforming to Practice F2339.1.1.1 When applying the additions provided in AppendixX1,this specification also covers the establishment of theminimum requirements for the design,testing and qualityassurance of in-flight adjustable propellers for light-sportaircraft.1.2 This specification is intended for use by manufacturersof propellers for light sport aircraft.1.3 This specification does not address the airframe instal-lation requirements for propellers.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and to determine theapplicability of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2F2339 Practice for Design and Manufacture of Reciprocat-ing Spark Ignition Engines for Light Sport Aircraft3.Terminology3.1 Definitions:3.1.1 blade,nthe aerodynamic portion of a propellerwhich is rotated through and acts on the air.3.1.2 blade root,nthe portion of the blade that interfaceswith the hub and provides retention.3.1.3 conventional fixed pitch propeller,na one-piecefixed pitch propeller that is constructed of material such aswood or metal that has no abrupt changes in material propertiesas the blades transition through the hub area.3.1.3.1 DiscussionA propeller with wooden bladesbonded to a metallic hub would not be conventional.3.1.4 fixed pitch propeller,na propeller with no capacityfor pitch setting adjustment.3.1.5 ground adjustable propeller,na propeller whosepitch setting is adjustable only when the aircraft is on theground and the propeller is not rotating.3.1.6 hub,nany device that retains the blades of a propel-ler assembly.3.1.7 pitch setting,nthe propeller blade setting as deter-mined by the blade angle measured in a manner,and at aradius,specified by the instruction manual for the propeller.3.1.8 propeller,na device for propelling an aircraft thathas blades on an engine-driven shaft and that,when rotated,produces by its action on the air,a thrust approximatelyperpendicular to its plane of rotation.4.General4.1 Each manufacturer who claims compliance to this speci-fication must be able to show compliance with the applicablerequirements of this specification.4.2 Manufacturers must prepare and make available a list ofacceptable engine-propeller combinations.4.3 Manufacturers must prepare and make available anoperating manual or manuals containing,at minimum,thefollowing information:4.3.1 An overall description of the propeller and its features.4.3.2 The mass moment of inertia of the propeller about itsrotational axis.4.3.3 Instructions for installation of the propeller.4.3.4 Instructions for operation of the propeller.4.3.5 The maximum allowable engine power and rotationalspeed and any other propeller operating limitations foundnecessary by the manufacturer for the safe operation of thepropeller.4.3.6 For ground adjustable propellers,instructions for pitchadjustment and the minimum and maximum pitch settingsallowed during operation.1This specification is under the jurisdiction of ASTM Committee F37 on LightSport Aircraft and is the direct responsibility of Subcommittee F37.70 on CrossCutting.Current edition approved Sept.1,2013.Published September 2013.Originallyapproved in 2007.Last previous edition approved in 2010 as F2506 101.DOI:10.1520/F2506-13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.3.7 Instructions for removal of the propeller.4.4 Each manufacturer must prepare and make available amaintenance manual.The maintenance manual is intended toprovide for continued safe and proper operation of the propel-ler throughout its life cycle and contains,at minimum,thefollowing content:4.4.1 A maintenance schedule that provides the recom-mended periods at which the propeller should be cleaned,adjusted,inspected,and tested.4.4.2 The applicable damage and wear allowances.4.4.3 Anyapplicablemaintenanceandoverhaulinstruc