EN 4841-1:2022

SLOVENSKI STANDARD
01-julij-2022
Aeronavtika - Dušilniki vibracij z oblogami - 1. del: Tehnična specifikacija
Aerospace series - Shock mount with bushes - Part 1: Technical specification
Luft- und Raumfahrt - Schwingungsdämpfer mit Buchse - Teil 1: Technische
Lieferbedingung
Série aérospatiale - Amortisseur de vibrations avec douille - Partie 1 : Spécification
technique
Ta slovenski standard je istoveten z: EN 4841-1:2022
ICS:
49.035 Sestavni deli za letalsko in Components for aerospace
vesoljsko gradnjo construction
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 4841-1
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2022
EUROPÄISCHE NORM
ICS 49.035
English Version
Aerospace series - Shock mount with bushes - Part 1:
Technical specification
Série aérospatiale - Amortisseur de vibrations à bagues Luft- und Raumfahrt - Schwingungsdämpfer mit
- Partie 1 : Spécification technique Buchse - Teil 1: Technische Lieferbedingung
This European Standard was approved by CEN on 12 July 2020.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC 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
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4841-1:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Symbols and abbreviations . 8
5 Required characteristics, inspections and test methods . 8
6 Static loads . 9
6.1 Description of test procedure . 9
6.2 Load calculation . 9
7 Fatigue loads . 9
8 Technical requirements . 9
8.1 General. 9
8.2 Check of external surfaces . 10
8.2.1 Visual inspection . 10
8.2.2 Roughness check . 10
8.3 Dimensional check . 10
8.3.1 Check of general shock mount design . 10
8.3.2 Check of shock mount geometrical characteristics . 10
8.4 Check of mass . 10
8.5 Stiffness . 10
8.6 Load test . 10
8.6.1 Check of limit load . 10
8.6.2 Check of ultimate load . 10
8.6.3 Load direction . 10
8.7 Corrosion test . 10
8.8 Fire worthiness requirements . 11
8.9 Environmental conditions . 11
8.9.1 Requirements . 11
8.9.2 Purpose of the test . 11
8.9.3 Test procedure . 11
8.9.4 Conclusion . 11
8.10 Marking . 11
9 Qualification . 11
9.1 Approval of manufacturers . 11
9.2 Classification of inspection . 11
9.3 Qualification test . 11
9.4 First article inspection . 12
9.5 Conformance/Acceptance test . 12
10 Condition on delivery . 12
10.1 Packaging . 12
10.2 Marking of packages . 12
10.3 Unit and transport packages . 12
11 Material . 12
11.1 Requirement . 12
11.2 Inspections and test method . 13
Annex A (normative) Sampling . 18
A.1 Acceptance test samples . 18
A.2 Qualification test samples . 18
Bibliography . 20

European foreword
This document (EN 4841-1:2022) has been prepared by the Aerospace and Defence Industries
Association of Europe - Standardization (ASD STAN).
After enquiries and votes carried out in accordance with the rules of this Association, this document has
received the approval of the National Associations and the Official Services of the member countries of
ASD-STAN, prior to its presentation to CEN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by November 2022, and conflicting national standards shall
be withdrawn at the latest by November 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,
Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
the United Kingdom.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
Introduction
This document is part of the series of EN mechanical standards for aerospace applications.
1 Scope
This document specifies the required characteristics, inspection and test methods, qualification and
acceptance conditions for shock mounts with bushes, designed to withstand static and dynamic loads
possible for aerospace interior applications in the temperature range from −55 °C to 85 °C.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 2424:2008, Aerospace series — Marking of aerospace products
EN 2825, Aerospace series — Burning behaviour of non metallic materials under the influence of radiating
heat and flames — Determination of smoke density
EN 2826, Aerospace series — Burning behaviour of non metallic materials under the influence of radiating
heat and flames — Determination of gas components in the smoke
EN 3844 (all parts), Aerospace series — Flammability of non-metallic materials
EN 4662, Aerospace series — Test specification for vibration control components
EN 4841-2, Aerospace series — Shock mounts with bushes — Part 2: Technical overview
EN 10204, Metallic products — Types of inspection documents
EN ISO 75-2, Plastics — Determination of temperature of deflection under load — Part 2: Plastics and
ebonite (ISO 75-2)
EN ISO 175, Plastics — Methods of test for the determination of the effects of immersion in liquid chemicals
(ISO 175)
EN ISO 178, Plastics — Determination of flexural properties (ISO 178)
EN ISO 179-1:2010, Plastics — Determination of Charpy impact properties — Part 1: Non-instrumented
impact test (ISO 179-1:2010)
EN ISO 291, Plastics — Standard atmospheres for conditioning and testing (ISO 291)
EN ISO 527-2:2012, Plastics — Determination of tensile properties — Part 2: Test conditions for moulding
and extrusion plastics (ISO 527-2:2012)
EN ISO 1172, Textile-glass-reinforced plastics — Prepregs, moulding compounds and laminates —
Determination of the textile-glass and mineral-filler content; calcination methods (ISO 1172)
EN ISO 1183-1, Plastics — Methods for determining the density of non-cellular plastics — Part 1:
Immersion method, liquid pycnometer method and titration method (ISO 1183-1)
EN ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests (ISO 9
...