EN 14607-7-2004 en Space engineering - Mechnical - Part 7 Mechnical parts《航天工程 机械 第7部分 机械部件》.pdf

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1、BRITISH STANDARD AEROSPACE SERIES BS EN 14607-7:2004 Space engineering Mechanical Part 7: Mechanical parts The European Standard EN 14607-7:2004 has the status of a British Standard ICS 49.140 BS EN 14607-7:2004 This British Standard was published under the authority of the Standards Policy and Stra

2、tegy Committee on 19 April 2005 BSI 19 April 2005 ISBN 0 580 45851 2 National foreword This British Standard is the official English language version of EN 14607-7:2004. The UK participation in its preparation was entrusted to Technical Committee ACE/68, Space systems and operations, which has the r

3、esponsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled

4、 “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance wi

5、th a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related interna

6、tional and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 15 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendment

7、s issued since publication Amd. No. Date Comments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14607-7 August 2004 ICS 49.140 English version Space engineering - Mechnical - Part 7: Mechnical parts Ingnierie spatiale - Mcanique - Partie 7: Pices mcaniques Raumfahrttechnik - Mechanik - Teil 7

8、: Mechanische Teile This European Standard was approved by CEN on 27 June 2003. 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 bi

9、bliographical references concerning such national standards may be obtained on application to the Central Secretariat 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

10、 of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy

11、, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussel

12、s 2004 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14607-7:2004: EEN 14607-7:2004 (E) 2 Contents page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms, definitions and abbreviated terms 5 3.1 Terms and definitions . 5 3.2

13、Abbreviated terms . 6 4 Requirements. 7 4.1 General 7 4.1.1 Requirements overview 7 4.1.2 Part classification 7 4.1.3 Part types 7 4.1.4 Application . 7 4.2 Mission 8 4.3 Functionality. 8 4.4 Constraints . 8 4.5 Interface 8 4.6 Design . 8 4.7 Verification . 8 4.7.1 Product assurance evaluation 8 4.7

14、.2 Part design verification and sizing requirements 9 4.7.3 Part qualification 9 4.7.4 Part acceptance . 9 4.7.5 Summary of the requirement levels. 9 4.7.6 Testing 10 4.8 Production and manufacturing 12 4.9 In-service 12 4.10 Product assurance. 12 4.11 Deliverables 13 Annex A (informative) Example o

15、f a testing matrix . 14 Bibliography 15 EN 14607-7:2004 (E) 3 Foreword This document (EN 14607-7:2004) has been prepared by CMC. 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 February 2005, and

16、conflicting national standards shall be withdrawn at the latest by February 2005. It is based on a previous version 1 ) originally prepared by the ECSS Mechanical Engineering Standard Working Group, reviewed by the ECSS Technical Panel and approved by the ECSS Steering Board. The European Cooperatio

17、n for Space Standardization (ECSS) is a cooperative effort of the European Space Agency, National Space Agencies and European industry associations for the purpose of developing and maintaining common standards. This document is one of the series of space standards intended to be applied together fo

18、r the management, engineering and product assurance in space projects and applications. Requirements in this document are defined in terms of what shall be accomplished, rather than in terms of how to organize and perform the necessary work. This allows existing organizational structures and methods

19、 to be applied where they are effective, and for the structures and methods to evolve as necessary without rewriting the standards. EN 14607 Space engineering - Mechanical is published in 8 Parts: Part 1: Thermal control Part 2: Structural Part 3: Mechanisms Part 4: ECLS Part 5: Propulsion Part 5.1:

20、 Liquid and electric propulsion for spacecraft Part 5.2: Solid propulsion for spacecraft, solid and liquid propulsion for launchers Part 6: Pyrotechnics Part 7: Mechanical parts Part 8: Materials According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following

21、 countries are bound to implement this European Standard : Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, S

22、witzerland and United Kingdom. 1 ) ECSS-E-30 Part 7A EN 14607-7:2004 (E) 4 1 Scope EN 14607 Part 7 of Space engineering - Mechanical defines the mechanical engineering requirements for mechanical parts. This document defines the requirements applicable to the selection, design, verification and appl

23、ication of mechanical parts to promote the use of high-quality non-critical mechanical parts that achieve robust functionality and satisfy the mission performance requirements. This document defines a pragmatic approach to the selection of parts by the mechanical and design engineer on the basis of

24、their effect on the integrity of the equipment and to streamline the selection of space-proven rather than non space-proven parts during the design of a new equipment in order to select the least number of different parts to satisfy the mission requirements. It defines performance, design, test, pro

25、duct assurance and support activity requirements for the use of mechanical parts in space applications. When viewed from the perspective of a specific project context, the requirements defined in this document should be tailored to match the genuine requirements of a particular profile and circumsta

26、nces of a project. NOTE Tailoring is a process by which individual requirements of specifications, standards and related documents are evaluated, and made applicable to a specific project by selection, and in some exceptional cases, modification of existing or addition of new requirements. 2 Normati

27、ve references The following referenced documents are indispensable for the application 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 13290-4:2001, Space project mana

28、gement General requirements Part 4: Project phasing and planning. EN 13291-1:1999, Space product assurance General requirements Part 1: Policy and principles. EN 13291-2:2003, Space product assurance General requirements Part 2: Quality assurance. EN 13291-3:2003, Space product assurance General req

29、uirements Part 3: Materials, mechanical parts and processes. EN 13701:2001, Space systems Glossary of terms. EN 14607-2, Space engineering Mechanical Part 2: Structural. EN14607-8, Space engineering Mechanical Part 8: Materials. EN 14725:2003, Space engineering Verification. References to sources of

30、 approved lists, procedures and processes can be found in the bibliography. EN 14607-7:2004 (E) 5 3 Terms, definitions and abbreviated terms 3.1 Terms and definitions For the purposes of this document, the terms and definitions given in EN 13701:2001 and the following apply. 3.1.1 bearing part compo

31、nent whose function is to permit rotation or sliding between load-bearing parts EXAMPLE Ball-bearing and ball-joint. 3.1.2 certificate of conformity document related to the part with relevant data certifying that the part fulfils the requirements 3.1.3 connecting part structural elements to provide

32、a mechanical joint EXAMPLE Bolts, nuts, rivets, inserts and clips. 3.1.4 control part component which regulates systems for variable operating and environmental conditions EXAMPLE Gears. 3.1.5 critical mechanical part mechanical part featuring risk which can be unacceptable to the project and requir

33、es specific attention or control or with which the contractor has had no previous applications experience EXAMPLE Critical mechanical parts include: single point failure part, limited life part, hazardous part, part without possibility of check out after integration, part with critical technology, p

34、art with a known history of failures. 3.1.6 development testing set of tests performed to prove the validity of the design and the technologies involved and to supplement analytical techniques in the pre-selected part or subassemblies 3.1.7 evaluation combination of tests, analyses and audit used to

35、 pronounce approval, validation or qualification 3.1.8 fluid handling part component that is used for moving fluids EXAMPLE Containers, ducts, valves, fittings, couplings, O-rings and diffusers. 3.1.9 heater device for the conversion of energy or work into heat 3.1.10 magnetic part device which func

36、tions either by the generation of or by the response to magnetic fields EN 14607-7:2004 (E) 6 3.1.11 measuring part component used to measure a physical quantity, with a selected unit, within a given tolerance, and inside a certain range of variation of the physical quantity EXAMPLE Gauges and therm

37、ocouples. 3.1.12 mechanical part off-the-shelf commercial and military (CAM) item or equipment designed and produced to perform a distinct mechanical function NOTE 1 CAM equipment has been developed and produced in lots to military or commercial national standards, in-house specifications or manufac

38、turer data sheets are readily available. NOTE 2 CAM equipment may be acquired without change to satisfy special requirements. However if changes are performed on a space-proven part, the transformed part is considered as equivalent to a “Space-proven part but with deviation in materials, design or u

39、se environment”. 3.1.13 optical passive equipment fixed optical elements requiring no external energy supply EXAMPLE Gratings, beam-splitters, lenses (reflecting, refractive) and mirrors. 3.1.14 spacing part component whose function it is to provide a separation between adjacent parts EXAMPLE Washer

40、s, spacers and shims. 3.1.15 separating part component with the function of releasing or separating adjoining components EXAMPLE Pyrotechnic actuators, springs and cutters. 3.1.16 space-proven part mechanical item whose properties are known and that is produced by means of stable processes and has b

41、een approved for use in previous space applications which are still valid for its intended use 3.2 Abbreviated terms The following abbreviated terms are defined and used within this document. Abbreviation Meaning CAM commercial and military (part) DML declared materials list DPL declared processes l

42、ist DMPL declared mechanical parts list EMC electromagnetic compatibility ESC electrostatic compatibility UV ultraviolet EN 14607-7:2004 (E) 7 4 Requirements 4.1 General 4.1.1 Requirements overview This clause contains the technical requirements for a project or programme requiring high reliability

43、mechanical parts. a) This document shall be used in the establishment of mechanical and physical properties of materials, including the effects of environmental conditions. b) This document shall be applicable to destructive and non-destructive test methods required for material selection, procureme

44、nt, production and verification. NOTE The use of space-proven parts avoids additional testing and ensures that such parts perform satisfactorily in nominal environment. 4.1.2 Part classification The mechanical parts requirements are defined according to the following part classifications: space-prov

45、en mechanical part; non-space-proven mechanical part; space-proven part, with deviation in materials, design or use environment. 4.1.3 Part types The mechanical parts classifications are defined according to following part types: non-critical mechanical part; critical mechanical part. 4.1.4 Applicat

46、ion a) This document applies to mechanical parts used in all space products. It is intended for end-users, design authorities, safety officials, project offices and manufacturers. b) The requirements shall be applied to mechanical parts for the selection, fabrication or acquisition of the parts to b

47、e used and integrated in a structure, assembly or subsystem of 1) manned space vehicles, 2) unmanned space vehicles, 3) expendable or reusable launch vehicles, and 4) ground equipment. NOTE Practical application can be impaired by the (provisional) absence of a particular standard or by the need to

48、modify a space product targeted standard or by the existence of several standards addressing the same topic. c) An early programme of parts identification and control shall be implemented by a materials, parts and processes board in accordance with the requirements of this document, EN 13291-2 and b

49、y EN 13291-3. EN 14607-7:2004 (E) 8 d) The contractor shall be responsible for the establishment and the implementation of the parts identification and control programme (including the DMPL) required by EN 13291-3. e) Where practicable space-proven parts shall be selected. f) Critical mechanical parts requiring development tests shall be identified early in the design and development plan. The list of tests and items identified shall be doc