ASTM_F_2352_-_14.pdf

Designation:F235214Standard Specification forDesign and Performance of Light Sport Gyroplane Aircraft1This standard is issued under the fixed designation F2352;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 manufacture of gyroplanes.This specification includes design and performance require-ments for light sport gyroplane aircraft.1.2 This specification applies to light gyroplane aircraftseeking civil aviation authority approval in the form of flightcertificates,flight permits,or other like documentation.1.3 A gyroplane for the purposes of this specification isdefined as a rotorcraft to be used for day VFR only,with rotorblades that are not engine-driven in flight and are supported inflight by the reaction of the air on a single rotor that rotatesfreely on a substantially vertical axis when the aircraft is inhorizontal flight.1.4 These requirements apply to light gyroplanes of ortho-dox design.Aircraft having the following basic features will beso regarded:1.4.1 Rotors of either fixed collective pitch or collectivepitch control that are not adjustable in flight,1.4.2 Single engine with fixed or ground adjustable pitchpropeller,1.4.3 No more than two occupant seats,and1.4.4 Amaximum gross weight(MGW)of 725 kg(1600 lb)or less.1.5 Where it can be shown that a particular feature is similarin all significant respects to a feature that has historicallydemonstrated compliance with this specification and can beconsidered a separate entity in terms of its operation,thatfeature shall be deemed to be applicable and in compliancewith this specification.1.6 Where these requirements are inappropriate to particulardesign and construction features,it will be necessary to submitan appropriate amendment of this specification to ASTMCommittee F37 on Light Sport Aircraft for consideration andapproval.1.7 The values in SI units are to be regarded as the standard.The values in parentheses are for information only.1.8 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 limitations prior to use.1.9 Table of Contents:SectionScope1Table of Contents1.9Referenced Documents2Terminology3Definitions3.1Acronyms3.2Flight4General4.1Performance4.2Controllability and Maneuverability4.3Longitudinal Lateral and Directional Control4.4Stability4.5Ground-Handling Characteristics4.6Miscellaneous Flight Requirements4.7Structure5General5.1Flight Loads5.2Engine Torque5.3Control System Loads5.4Stabilizing and Control Surfaces5.5Ground Loads5.6Main Component Requirements5.7Emergency Landing Conditions5.8Other Loads5.9Design and Construction6General6.1Materials6.2Fabrication Methods6.3Locking of Connections6.4Protection of Structure6.5Inspection6.6Provisions for Rigging and Derigging6.7Material Strength Properties and Design Values6.8Fatigue Strength6.9Special Factors of Safety6.10Bearing Factors6.10.2Fitting Factors6.10.3Cable Factor6.10.4Rotor Components Factor6.10.5Flutter Prevention and Structural Stiffness6.11Control Surfaces and Rotors6.12Control Surface Installations(Other Than RotorBlades)6.13Control Surface Hinges(Other Than Rotor Blades)6.14Rotor Mass Balance6.15Rotor Blade Clearance6.161This specification is under the jurisdiction of ASTM Committee F37 on LightSport Aircraft and is the direct responsibility of Subcommittee F37.50 on Gyro-plane.Current edition approved Nov.1,2014.Published November 2014.Originallyapproved in 2004.Last previous edition approved in 2011 as F2352 11.DOI:10.1520/F2352-14.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 SectionRotor Head Bearings6.17Control Systems6.18Cockpit Design6.19Powerplant7General7.1Engine7.2Engine and Propeller Compatibility7.3Rotor Spin-Up and Brake Systems7.4Powerplant and Rotor System Compatibility7.5Propeller Clearance7.6Fuel System7.7Oil System7.8Cooling7.9Induction System7.10Exhaust System7.11Powerplant Controls and Accessories7.12Cowling and Nacelle7.13Equipment8General8.1InstrumentsInstallation8.2Electrical Systems and Equipment8.3Miscellaneous Equipment8.4Operating Limitations and Information9General9.1Airspeed Limitations9.2Weight and Balance9.3Powerplant and Propeller Limitations9.4Pilot Operating Handbook,POH9.5Maintenance Manual9.6Markings and Placards9.7Propellers10Design and Construction10.1Keywords122.Referenced Documents2.1 ASTM Standards:2F2339 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 Airc