BS M 91-1997 Aircraft - Methodology of calculating cargo compartment volumes《飞行器 货舱容积的计算方法》.pdf

1、BRITISH STANDARD AEROSPACE SERIES BS M 91:1997 ISO 10046: 1996 Aircraft Methodology of calculating cargo compartment volumes ICS 49.045BSM 91:1997 This British Standard, having been prepared under the directionof the Engineering SectorBoard, was published underthe authority of the Standards Board an

2、d comes intoeffect on 15 June 1997 BSI 09-1999 ISBN 0 580 27581 7 National foreword This British Standard reproduces verbatim ISO10046:1996 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee ACE/57, Aircraft cargo systems and g

3、round equipment, which has the responsibility to: 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 international and European development

4、s and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section

5、entitled “International Standards Correspondence Index”, or using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compli

6、ance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theISO title page, pages ii to iv, pages 1 to 8 and a back cover. This standard has been updated (see copyright date)

7、 and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBSM 91:1997 BSI 09-1999 i Contents Page National foreword Inside front cover Foreword iii Text of ISO 10046 1ii blankBSM 91:19

8、97 ii BSI 09-1999 Contents Page Foreword iii Introduction 1 1 Scope 1 2 Normative reference 1 3 Definitions 1 4 Compartment internal volumes 1 5 Unit load device envelopes 2 Figure 1 Main check compartment usable length 3 Figure 2 Main desk compartment usable height 4 Figure 3 Main deck compartment

9、usable width 4 Figure 4 Lower deck compartment usable length 5 Figure 5 Lower deck compartment usable height 5 Figure 6 Lower deck compartment usable width 6 Figure 7 Maximum allowable unit load device contour 7 Figure 8 Palletized cargo contour clearances 8BSM 91:1997 BSI 09-1999 iii Foreword ISO (

10、the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical commi

11、ttee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotec

12、hnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least75% of the member bodies casting a vote. International Standard ISO10046 was prepared by Tec

13、hnical Committee ISO/TC20, Aircraft and space vehicles, Subcommittee SC9, Air cargo and ground equipment. Descriptors: Aircraft, cargo aircraft, aircraft equipment, bay (aeronautics), determintion, volume, rules of calculation.iv blankBSM 91:1997 BSI 09-1999 1 Introduction The purpose of this Intern

14、ational Standard is to establish a uniform methodology for defining and determining the usable internal volume of aircraft cargo compartments, and usable external envelope for Unit Load Devices (ULDs) which can be accommodated within these compartments. This will provide the aircraft industry with a

15、 set of standard methodology which when specified, can be utilized by the airlines when comparing similar type aircraft. 1 Scope This International Standard covers the methodology of defining and determining the internal volumes of both the main deck and lower deck aircraft cargo compartments. The m

16、inimum required clearance between the compartment envelope and the unit load devices (ULDs) is also stated in order to provide the maximum ULD external contour and the methodology to define the ULD internal volumes. 2 Normative reference The following standard contains provisions which, through refe

17、rence in this text, constitute provisions of this International Standard. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the m

18、ost recent edition of the standard indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 10254:1995, Air cargo and ground equipment Vocabulary. 3 Definitions For the purposes of this International Standard, the definitions given in ISO10254 apply.

19、 4 Compartment internal volumes 4.1 Main deck compartment The main deck compartment internal volume may be calculated and listed as maximum usable volume, provided that bulk cargo is compartment restrained, i.e.the floor, ceiling, sidewalls, bulkheads, nets and supporting structure are capable of wi

20、thstanding the bulk cargo restraint loads associated with all flight and ground load conditions with applicable load factors, including 9g forward emergency landing condition. If bulk cargo is not compartment restrained, then the internal volume value shall be followed by an asterisk (*) denoting th

21、at the usable volume shall be derived from cumulative ULD volumes as specified in clause5. The following criteria shall apply to define the main deck compartment envelope limits. 4.1.1 The usable compartment length shall be that length of the main deck floor which is designed to support bulk cargo s

22、tacked over the entire floor area. If a forward barrier net is required, then only that portion of the usable floor length aft of the barrier net station shall be utilized. SeeFigure 1. 4.1.2 The usable compartment height shall be the minimum height between floor or the top of the conveyor rollers a

23、nd ceiling structure or lining under which cargo must pass during loading/unloading procedures. SeeFigure 2. This will take into account mid-cabin drop ceilings. Local protrusions at either end of the compartment under which cargo may be stowed but not passed beyond shall be accounted for in calcula

24、ting the internal volume, but shall not govern the compartment height. In no case shall the compartment height exceed the main deck loading doorway height. SeeFigure 2. 4.1.3 The usable compartment width shall be the actual cross-sectional width of the compartment, provided that the sidewall liner i

25、s capable of withstanding the bulk cargo restraint loads. If the sidewall liner is not capable of withstanding this load, then only the width inboard of a lateral restraint device shall be utilized. SeeFigure 3.BSM 91:1997 2 BSI 09-1999 4.2 Lower deck compartments The lower deck compartment internal

26、 volumes shall be calculated and listed as maximum usable volumes, provided that bulk cargo is compartment restrained, i.e. the floor, ceiling, sidewalls, bulkheads, nets and supporting structure are capable of withstanding the bulk cargo restraint loads associated with all flight and ground load co

27、nditions with applicable load factors. If bulk cargo is not compartment restrained, the internal volume value shall be followed by an asterisk (*) denoting that the usable volume shall be derived from cumulative ULD volumes as specified in clause5. The following criteria shall apply to define the lo

28、wer deck compartment envelope limits. 4.2.1 The usable compartment length shall be that length of the lower deck floor which is designed to support bulk cargo stacked over the entire floor area. This requires that the end bulkheads are designed to withstand bulk cargo restraint loads. SeeFigure 4. 4

29、.2.2 The usable compartment height shall be the actual height between floor and ceiling surfaces, provided that both are capable of withstanding bulk cargo restraint loads. The height that a cargo loading system protrudes above the floor surface need not be discounted, provided that the system is ea

30、sily removed or inverted when bulk cargo is being transported. The cargo doorway height, if less than the internal compartment height, shall be considered when establishing the usable height to define the maximum ULD envelope, but it need not be the controlling factor to establish the usable compart

31、ment height to define the internal bulk cargo compartment volume. SeeFigure 5. 4.2.3 The usable compartment width shall be the actual cross-sectional width, provided that the sidewall liners (vertical and sloping) are capable of withstanding bulk cargo restraint loads. SeeFigure 6. Where the sides,

32、or floor and ceiling, of the compartment are not parallel, a number of cross-section dimensions may be required, all of which will have to take into account vertical and sloping sidewalls. In this case, calculating the volume will require that an accurate cross-section is applied to the linear dimen

33、sion of the compartment. 4.2.4 The volume lost due to installation of doorway barriers shall be accounted for in determining the internal volume, by assuming planes between floor, ceiling and sidewall which encompass all of the barrier tiedown/attach points. 5 Unit load device envelopes IATA 50/Seri

34、es Specifications from the IATA Unit Load Devices (ULD) Technical Manual define the available contours and configurations for unit load devices (ULDs) which can be accommodated within the cargo compartment to assist in transporting cargo. The allowable clearance between aircraft interior and various

35、 types of ULDs are shown inFigure 7 and shall be based upon the minimum cross section of the aircraft through which or in which the ULD will traverse or be stowed. 5.1 Container envelope and volume Containers are rigid unit load devices, including both structural and non-structural igloo assemblies,

36、 with controlled contour shapes. The structural container and nonstructural container/igloo shall allow51mm (2in) of clearance to the minimum aircraft envelope in accordance withFigure 7. The internal volume of containers shall be listed as usable volumes and shall be calculated by taking93,5% of th

37、e external envelope volume. This will account for the floor, ceiling, sidewalls, internal stiffeners, longerons and supports. The value of93,5% is not applicable to forkliftable containers. 5.2 Pallet load envelope and volume A cargo pallet is a flat ULD, having no side or end walls, on which cargo

38、is stacked, and utilizes overthrow nets to secure the stacked cargo load. The palletized cargo contour shall allow51mm (2in) of clearance to the minimum aircraft envelope, except in areas where it is necessary to allow a greater clearance to protect critical aircraft components, in order to account

39、for irregular shaped loads and load shifting which can occur. The51mm (2in) of clearance does not apply to the net/hardware, but in no case shall the net/hardware be within51mm (2in) of the aircraft envelope. The palletized cargo shall also have a51mm (2in) setback from the outer edge of the pallet

40、on all sides to permit attachment of net hardware to the pallet. SeeFigure 8. A100mm (4in) longitudinal clearance shall be provided for cargo in line with any aircraft structure, unless that structure is designed to withstand bulk cargo restraint loads. SeeFigure 7.BSM 91:1997 BSI 09-1999 3 The volu

41、me of a palletized ULD shall be calculated and listed as usable volume, utilizing the following guidelines. Pallet thickness shall be assumed as20mm (0,75in) for commercial pallets and57mm (2,25in) for military pallets, unless otherwise specified. The palletized cargo shall have a51mm (2in) setback

42、from the outer edges of the pallet. The height shall be controlled by the51mm(2in) clearance dimension to the minimum aircraft envelope through which the palletized ULD must pass during the loading/unloading cycle. SeeFigure 7. A15cm(6in) longitudinal clearance shall be provided for any change in co

43、ntour shape due to overhead or sidewall protrusions in line with the ULD stowed position. SeeFigure 8. Figure 1 Main check compartment usable lengthBSM 91:1997 4 BSI 09-1999 Figure 2 Main desk compartment usable height Figure 3 Main deck compartment usable widthBSM 91:1997 BSI 09-1999 5 Figure 4 Low

44、er deck compartment usable length Figure 5 Lower deck compartment usable heightBSM 91:1997 6 BSI 09-1999 Figure 6 Lower deck compartment usable widthBSM 91:1997 BSI 09-1999 7 Figure 7 Maximum allowable unit load device contourBSM 91:1997 8 BSI 09-1999 Figure 8 Palletized cargo contour clearances9 bl

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