SIST EN 2591-421:2004

Aerospace series - Elements of electrical and optical connection - Test methods - Part 421: Free fall

This standard specifies a method of verifying the ability of an element of connection to withstand shock when submitted to repeated falls.
It shall be used together with EN 2591-100.

Luft- und Raumfahrt - Elektrische und optische Verbindungselemente - Prüfverfahren - Teil 421: Freier Fall

Diese Norm legt ein Verfahren zur Überprüfung der Widerstandsfähigkeit eines Verbindungselementes gegenüber Stößen fest, die durch wiederholtes Herunterfallen verursacht werden.
Sie ist in Verbindung mit EN 2591-100 anzuwenden.

Série aérospatiale - Organes de connexion électrique et optique - Méthodes d'essais - Partie 421: Chute libre

Aerospace series - Elements of electrical and optical connection - Test methods - Part 421: Free fall

General Information

• Status: Published
• Publication Date: 30-Apr-2004
• ICS: 49.060 - Aerospace electric equipment and systems
• Technical Committee: I08 - Imaginarni 08
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-May-2004
• Due Date: 01-May-2004
• Completion Date: 01-May-2004
• Ref Project: EN 2591-421:2002 - Aerospace series - Elements of electrical and optical connection - Test methods - Part 421: Free fall

Overview

EN 2591-421:2002 - "Aerospace series – Elements of electrical and optical connection – Test methods – Part 421: Free fall" - defines a standardized method to verify the ability of electrical and optical connection elements (connectors, inserts, housings) to withstand mechanical shock from repeated falls. Published by CEN and prepared by AECMA, this test method is intended for use in aerospace component qualification and shall be used together with EN 2591-100 (general test requirements).

Key topics and requirements

• Scope: Confirms connector resistance to shock caused by repeated free-fall impacts.
• Specimen preparation: Specimens are tested non-mated and non-wired but fitted with their normal accessories. The technical specification must state accessory type and the number of revolutions if different from the default.
• Apparatus: A rotating drum fixture is used to produce repeated falls; the standard specifies rotation at about 5 revolutions per minute (rpm).
• Test cycle: Unless otherwise specified, the default number of falls (revolutions) is 50.
• Impact surface: The test arrangement includes a steel plate as the impact surface (the standard refers to a 3 mm steel plate in its apparatus figure).
• Post-test measurements: Final assessment can include visual examination (per EN 2591-101) and measurement of mating/unmating forces (per EN 2591-408) to verify no degradation in performance.
• Normative references: EN 2591-100 (General), EN 2591-101 (Visual examination), EN 2591-408 (Mating/unmating forces).

Practical applications

• Qualifying aerospace electrical and optical connectors for durability against handling and in-service knocks and drops.
• Verifying shock resistance during connector design validation, production sampling, or incoming inspection.
• Supporting certification and procurement requirements where mechanical robustness is critical (avionics, harness assemblies, shipboard and military aerospace systems).
• Useful for component manufacturers, test laboratories, quality engineers, OEMs and maintenance/repair organizations.

Who uses EN 2591-421?

• Connector and cable assembly manufacturers
• Aerospace test laboratories and certification bodies
• Design and reliability engineers in aerospace and defense
• Procurement and quality assurance teams specifying connector durability

Related standards

• EN 2591-100 - Test methods - Part 100: General (mandatory companion standard)
• EN 2591-101 - Visual examination
• EN 2591-408 - Mating and unmating forces

Keywords: EN 2591-421, free fall test, aerospace connectors, shock resistance, elements of electrical and optical connection, test methods, connector qualification, AECMA, CEN.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Elements of electrical and optical connection - Test methods - Part 421: Free fallLuft- und Raumfahrt - Elektrische und optische Verbindungselemente - Prüfverfahren - Teil 421: Freier FallSérie aérospatiale - Organes de connexion électrique et optique - Méthodes d'essais - Partie 421: Chute libreAerospace series - Elements of electrical and optical connection - Test methods - Part 421: Free fall49.060Aerospace electric equipment and systemsICS:Ta slovenski standard je istoveten z:EN 2591-421:2002SIST EN 2591-421:2004en01-maj-2004SIST EN 2591-421:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 2591-421June 2002ICS 49.060English versionAerospace series - Elements of electrical and optical connection- Test methods - Part 421: Free fallSérie aérospatiale - Organes de connexion électrique etoptique - Méthodes d'essais - Partie 421: Chute libreLuft- und Raumfahrt - Elektrische und optischeVerbindungselemente - Prüfverfahren - Teil 421: Freier FallThis European Standard was approved by CEN on 8 February 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 2591-421:2002 ESIST EN 2591-421:2004
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