ASTM_F_2245_-_15.pdf

Designation:F224515Standard Specification forDesign and Performance of a Light Sport Airplane1This standard is issued under the fixed designation F2245;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 airworthiness requirements forthe design of powered fixed wing light sport aircraft,an“airplane.”1.2 This specification is applicable to the design of a lightsport aircraft/airplane as defined by regulations and limited toVFR flight.1.3 UnitsThe values given in this standard are in SI unitsand are to be regarded as standard.The values given inparentheses are mathematical conversions to inch-pound(orother)units that are provided for information only and are notconsidered standard.The values stated in each system may notbe exact equivalents.Where it may not be clear,someequations provide the units of the result directly following theequation.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 determine the applica-bility of regulatory requirements prior to use.2.Referenced Documents2.1 ASTM Standards:2F2316 Specification for Airframe Emergency ParachutesF2339 Practice for Design and Manufacture of Reciprocat-ing Spark Ignition Engines for Light Sport AircraftF2483 Practice for Maintenance and the Development ofMaintenance Manuals for Light Sport AircraftF2506 Specification for Design and Testing of Light SportAircraft PropellersF2538 Practice for Design and Manufacture of Reciprocat-ing Compression Ignition Engines for Light SportAircraftF2564 Specification for Design and Performance of a LightSport GliderF2746 Specification for Pilots Operating Handbook(POH)for Light Sport AirplaneF2840 Practice for Design and Manufacture of ElectricPropulsion Units for Light Sport Aircraft2.2Federal Aviation Regulations:314 CFR Part 33 Airworthiness Standards:Aircraft Engines14 CFR Part 35 Airworthiness Standards:Propellers2.3EASA Requirements:4CS-22 Sailplanes and Powered SailplanesCS-E EnginesCS-P Propellers2.4 Other Standards:GAMA Specification No.1 Specification for Pilots Operat-ing Handbook53.Terminology3.1 Definitions:3.1.1 electric propulsion unit,EPUany electric motor andall associated devices used to provide thrust for an electricaircraft.3.1.2 energy storage device,ESDused to store energy aspart of a Electric Propulsion Unit(EPU).Typical energystorage devices include but are not limited to batteries,fuelcells,or capacitors.3.1.3 flapsany movable high lift device.3.1.4 maximum empty weight,WE(N)largest emptyweight of the airplane,including all operational equipment thatis installed in the airplane:weight of the airframe,powerplant,Energy Storage Device(ESD)as part of an Electric PropulsionUnit(EPU),required equipment,optional and specificequipment,fixed ballast,full engine coolant and oil,hydraulicfluid,and the unusable fuel.Hence,the maximum emptyweight equals maximum takeoff weight minus minimum usefulload:WE=W WU.3.1.5 minimum useful load,WU(N)where WU=W WE.1This specification is under the jurisdiction of ASTM Committee F37 on LightSport Aircraft and is the direct responsibility of Subcommittee F37.20 on Airplane.Current edition approved Sept.1,2015.Published October 2015.Originallyapproved in 2004.Last previous edition approved in 2014 as F2245 14.DOI:10.1520/F2245-15.2For 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.3Available from Federal Aviation Administration(FAA),800 IndependenceAve.,SW,Washington,DC 20591,http:/www.faa.gov or http:/ecfr.gpoaccess.gov.4Available from EASA European Aviation Safety Agency,Postfach 10 12 53,D-50452 Koeln,Germany,http:/easa.europa.eu.5Available from the General Aviation Manufacturers Association,http:/www.gama.aero/.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.6 nighthours between the end of evening civil twilightand the beginning of morning civil twilight.3.1.6.1 DiscussionCivil twilight ends in the evening whenthe center of the suns disc is 6 below the horizon,and beginsin the morning when the center of the suns disc is 6 below thehorizon.3.1.7 The terms“engine”referring to internal combustionengines and“motor”referring to electric motors for propulsionare used interchangeably within this standard.3.1.8 The term“engine idle”when in reference to electricpropulsion units shall mean the minimum power or propellerrotational speed condition for the electric motor as definedwithout electronic brakin