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ASTM F3239-18

(Specification)

Standard Specification for Aircraft Electric Propulsion Systems

Standard Specification for Aircraft Electric Propulsion Systems

SCOPE
1.1 This specification addresses airworthiness requirements for the design and installation of electric propulsion systems for aeroplanes. Hybrid-electric propulsion systems are addressed implicitly unless explicitly stated otherwise. This specification was written with the focus on electric propulsion systems with conventional system layout, propulsion characteristics, and operation. The content may be more broadly applicable; it is the responsibility of the applicant to substantiate broader applicability as a specific means of compliance.  
1.2 An applicant intending to propose this information as Means of Compliance for a design approval must seek guidance from their respective oversight authority (for example, published guidance from applicable CAAs) concerning the acceptable use and application thereof. For information on which oversight authorities have accepted this standard (in whole or in part) as an acceptable Means of Compliance to their regulatory requirements (hereinafter “the Rules”), refer to the ASTM Committee F44 web page (www.astm.org/COMMITTEE/F44.htm).  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Historical
Publication Date
31-Aug-2018
ICS
49.050 - Aerospace engines and propulsion systems
49.060 - Aerospace electric equipment and systems
Technical Committee
F44 - General Aviation Aircraft
Drafting Committee
F44.40 - Powerplant
Current Stage
Ref Project

Relations

Referred By
ASTM F3316/F3316M-19 - Standard Specification for Electrical Systems for Aircraft with Electric or Hybrid-Electric Propulsion
Effective Date
01-Sep-2018
Referred By
ASTM F3563-22 - Standard Specification for Design and Construction of Large Fixed Wing Unmanned Aircraft Systems
Effective Date
01-Sep-2018
Referred By
ASTM F3264-23 - Standard Specification for Normal Category Aeroplanes Certification
Effective Date
01-Sep-2018

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ASTM F3239-18 - Standard Specification for Aircraft Electric Propulsion SystemsASTM F3239-18 - Standard Specification for Aircraft Electric Propulsion Systems
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ASTM F3239-18 - Standard Specification for Aircraft Electric Propulsion Systems
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:F3239 −18
Standard Specification for
1
Aircraft Electric Propulsion Systems
This standard is issued under the fixed designation F3239; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
2
1.1 This specification addresses airworthiness requirements 2.1 ASTM Standards:
for the design and installation of electric propulsion systems F3060 Terminology for Aircraft
for aeroplanes. Hybrid-electric propulsion systems are ad- F3061/F3061M Specification for Systems and Equipment in
dressed implicitly unless explicitly stated otherwise. This Small Aircraft
specification was written with the focus on electric propulsion F3062/F3062M Specification forAircraft Powerplant Instal-
systems with conventional system layout, propulsion lation
characteristics, and operation. The content may be more F3063/F3063M Specification for Aircraft Fuel and Energy
broadly applicable; it is the responsibility of the applicant to Storage and Delivery
substantiate broader applicability as a specific means of com- F3064/F3064M Specification for Aircraft Powerplant
pliance. Control, Operation, and Indication
F3065/F3065M Specification for Aircraft Propeller System
1.2 An applicant intending to propose this information as
Installation
Means of Compliance for a design approval must seek guid-
F3066/F3066M Specification forAircraft Powerplant Instal-
ance from their respective oversight authority (for example,
lation Hazard Mitigation
published guidance from applicable CAAs) concerning the
F3114/F3114M Specification for Structures
acceptable use and application thereof. For information on
F3116/F3116M Specification for Design Loads and Condi-
which oversight authorities have accepted this standard (in
tions
whole or in part) as an acceptable Means of Compliance to
F3120/F3120M Specification for Ice Protection for General
their regulatory requirements (hereinafter “the Rules”), refer to
Aviation Aircraft
the ASTM Committee F44 web page (www.astm.org/
F3316/F3316M Specification for Electrical Systems forAir-
COMMITTEE/F44.htm).
craft with Electric or Hybrid-Electric Propulsion
1.3 This standard does not purport to address all of the 3
2.2 FAA Standards:
safety concerns, if any, associated with its use. It is the
AC23-16 Systems and Equipment Guide for Certification of
responsibility of the user of this standard to establish appro-
Part 23 Airplanes and Airships
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use. 3. Terminology
1.4 This international standard was developed in accor-
3.1 The following is a selection of relevant terms. See
dance with internationally recognized principles on standard-
Terminology F3060 for more definitions and abbreviations.
ization established in the Decision on Principles for the
3.2 Definitions:
Development of International Standards, Guides and Recom-
3.2.1 capacity—total amount between minimum and maxi-
mendations issued by the World Trade Organization Technical
mum condition (for example, empty and full).
Barriers to Trade (TBT) Committee.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
ThisspecificationisunderthejurisdictionofASTMCommitteeF44onGeneral contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Aviation Aircraft and is the direct responsibility of Subcommittee F44.40 on Standards volume information, refer to the standard’s Document Summary page on
Powerplant. the ASTM website.
3
Current edition approved Sept. 1, 2018. Published September 2018. DOI: Available from Federal Aviation Administration (FAA), 800 Independence
10.1520/F3239-18. Ave., SW, Washington, DC 20591, http://www.faa.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
F3239−18
3.2.2 electric propulsion unit (EPU)—the EPU shall as a in the loss of power of more than one EPU or require
minimum consist of the electric motor, associated electronic immediate action by the pilot to prevent the loss of power of
controllers, disconnects, wiring, and monitoring gauges and more than one EPU.
meters.
NOTE2—RefertoAC23-16forguidanceontheindependenceofenergy
3.2.2.1 Discussion—The EPU is an aircraft engine.
distribution systems.
3.2.3 energy distribution system—a system that provides
5.3 Energy Storage System:
energy for propulsion from the energy storage systems to the
5.3.1 General:
propulsive units.
5.3.1.1 Each energy storage system shall meet the require-
3.2.3.1 Dis
...

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