1、BRITISH STANDARD AEROSPACE SERIES BS M 71:1994 ISO 4171:1993 Air cargo equipment Interline pallets UDC 621.869.82.629.7.045BSM71:1994 This British Standard, having been prepared under the directionof the Aerospace Standards Policy Committee, waspublished under the authorityof the Standards Boardand
2、comes into effect on 15 March 1994 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference ACE/57 Draft for comment 92/73394 DC ISBN 0 580 22965 3 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the
3、Aerospace Standards Policy Committee (ACE/-) to Technical Committee ACE/57, upon which the following bodies were represented: Association of Webbing Load Restraint Equipment Manufacturers British Airways British Narrow Fabrics Association Civil Aviation Authority (Airworthiness Division) Health and
4、Safety Executive Ministry of Defence Society of British Aerospace Companies Ltd. Society of Motor Manufacturers and Traders Ltd. Amendments issued since publication Amd. No. Date CommentsBSM71:1994 BSI 01-2000 i Contents Page Committees responsible Inside front cover National foreword ii 1 Scope 1 2
5、 Normative references 1 3 Dimensions 1 4 Construction 1 5 Design loads 2 6 Operational criteria 3 7 Local indentation performance 3 8 Test No. 1 Bridging and cresting test (surface mode) 3 9 Test No. 2 Horizontal load test (operational loads) 4 10 Test No. 3 Upward load test operational loads 4 11 E
6、xecution of test 5 12 Markings 5 Figure 1 Pallet edge 2 Figure 2 Local indentation loading 4 Figure 3 Location of pallet markings 6 Figure 4 Bar code markings 7 Table 1 1 Table 2 1 Table 3 2 List of references Inside back coverBSM71:1994 ii BSI 01-2000 National foreword This British Standard has bee
7、n prepared under the direction of the Aerospace Standards Policy Committee. It is identical with ISO 4171:1993 Air cargo equipment Interline pallets, published by the International Organization for Standardization (ISO). The International Standard is a second edition and cancels and replaces the fir
8、st edition (ISO 4171:1980), of which it constitutes a technical revision. The first edition was not previously dual numbered as a British Standard. The Technical Committee has reviewed the provisions of ISO 4116:1986, ISO4170:1987 and ISO 8097:1986 to which normative reference is made in the text, a
9、nd has decided that they are acceptable for use in conjunction with this standard. 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. Compliance with a British Standard does not of itsel
10、f confer immunity from legal obligations. Cross-reference International Standard Corresponding British Standard ISO 7166:1985 BS 2C 8:1988 Specification for rail and stud configuration for aircraft passenger equipment and cargo restraint (Identical) Summary of pages This document comprises a front c
11、over, an inside front cover, pages i and ii, pages1 to 8, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BSM71:1994 BSI 01-2000 1 1 Scope This
12、 International Standard establishes dimensional, structural and environmental requirements for pallets used to transport cargo in aircraft using nets meeting the requirements of ISO4170. 2 Normative references The following standards contain provisions which, through reference in this text, constitu
13、te provisions of this International Standard. At the time of publication, the editions indicated were 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 most recent editions of the
14、 standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 4116:1986, Air cargo equipment Ground equipment requirements for compatibility with aircraft unit load devices. ISO 4170:1987, Air cargo equipment Interline pallet nets. ISO 7166:198
15、5, Aircraft Rail and stud configuration for passenger equipment and cargo restraint. ISO 8097:1993, Aircraft Minimum airworthiness requirements and test conditions for certified air cargo unit load devices. IATA, Unit Load Devices (ULD) Technical Manual,5th edition 1) . 3 Dimensions 3.1 Basic pallet
16、 sizes This International Standard establishes five basic sizes of pallets as given in Table 1. Table 1 3.2 Basic pallet configuration The pallets consist of two basic components, a core and edge rails, forming an essentially flat panel designed to transport cargo on aircraft systems and to be handl
17、ed on ramp and terminals with ground equipment meeting the standards listed in clause 2 as applicable. The aircraft conveyor systems may be defined as given in Table 2. Table 2 4 Construction 4.1 General 4.1.1 Design, material and construction The design, materials and construction of the pallet sha
18、ll be of aircraft quality. The design shall be such as to minimize the need for maintenance and to ease and minimize the cost of maintenance and repair. 4.1.2 Surfaces and edges The pallet surfaces and edges shall present no roughness or sharp edges potentially injurious to personnel or liable to da
19、mage cargo, aircraft and ground equipment parts. 4.1.3 Bottom surface The bottom surface of the pallet shall be nominally flat and continuous. 1) Available from International Air Transport Association, 2000 Peel Street, Montreal, CANADA H3A 2R4 or Route de lAroport33, Case Postale 672, 1215 Geneva 1
20、5, SWITZERLAND. Size code in accordance with ISO 8097 Pallet size mm in A 2 235 3 175 88 125 B 2 235 2 743 88 108 K 1 534 1 562 60,4 61,5 L 1 534 3 175 60,4 125 M 2438 3 175 96 125 Device Characteristic Dimension mm in Ball mat Ball diameter 25,4 1 Basis ball pitch 127 5 Roller system Pallet maximum
21、 overhang on major axis 362 14,25 Pallet maximum overhang on minor axis 254 10 Roller maximum pitch on major axis 673 26,5 Roller maximum pitch on minor axis 254 10 Minimum roller diameter 25,4 1 Minimum roller length 51 2 Swivel caster Minimum wheel diameter 25,4 1 Minimum contact length 51 2 Maxim
22、um caster pitch 305 12BSM71:1994 2 BSI 01-2000 4.1.4 Load capacity, operational criteria and performance requirements The pallet assembly shall meet the requirements of clauses 5 to 11. 4.2 Pallet core The pallet core shall be enclosed on all four sides by edges rails. If the pallet core is of sandw
23、ich-type construction, the upper and lower skins shall be enclosed by the edge rail. In all cases, the design of the edge rail/core connection and the edge rail corner connection shall be adequate to ensure the integrity of the assembly under the impact and bridging loads expected in service. 4.3 Pa
24、llet edge rails and corners 4.3.1 Pallet edge The pallet edge rail shall conform to the sectional dimensions shown in Figure 1. 4.3.2 Seat track The edge rail shall incorporate a continuous seat track into the upper surface. The seat track shall have dimensions in accordance with ISO 7166. The seat
25、track centreline location is shown in Figure 1. The corresponding net attachment locations shall be in accordance with ISO 8097 pallet/net compatibilities. The track should have provisions and/or ways for water draining. 4.3.3 Corners The pallet corner shall have a 63 mm 12,7 mm (2,5 in 0,5 in) radi
26、us in plan view. The corner shall have vertical dimensions as shown in Figure 1. 5 Design loads 5.1 Table of loads The pallet, used in conjunction with the corresponding net, shall be able to support the loads listed in Table 3. Table 3 Size code in accordance with ISO 8097 Maximum gross weight a kg
27、 lb A 6 804 15 000 B 4 536 10 000 K 1 588 3 500 L 3 175 7 000 M 6 804 15 000 a The term “weight” is used throughout this International Standard instead of the correct technical term “mass” in order to conform to current commercial usage. Figure 1 Pallet edgeBSM71:1994 BSI 01-2000 3 5.2 Pallet net 5.
28、2.1 The net assembly required to restrain the cargo on the pallet shall be made in accordance with ISO 4170. Net attachment fittings shall be in conformity with ISO 7166. 5.2.2 Pallet/net compatibility, number of net attachment fittings and type (single or double stud) shall be in accordance with IS
29、O 8097. 5.3 Design and test requirements The pallet shall meet the critical performance design and test requirements for Class II systems. SeeISO 8097. 6 Operational criteria 6.1 Impact against locks The pallet assembly shall withstand, without damage, an impact of a fully loaded pallet striking the
30、 locks at an impact speed of0,3m/s. 6.2 Core stiffness The minimum core stiffness for a pallet with size code A, B, L or M shall be331Nm 2 /m (2 932 Ibfin 2 /in) width/length of core. The minimum core stiffness for a pallet with size code K shall be76,5 Nm 2 /m (678 lbfin 2 /in) width/length of core
31、. These core stiffnesses are calculated using a modulus of elasticity of68 670N/mm 2(99,6 10 5lbf/in 2 ), a minimum guaranteed sheet thickness of 3,75 mm (2,3 mm for size code K) and the factor 1 v 2for two-dimensional calculation. 6.3 Temperature resistance The pallet assembly shall maintain its st
32、ructural and operational integrity over the temperature range 54 C to +71 C (65 F to + 160 F). 6.4 Protection against deterioration All components of the pallet be protected against deterioration or loss strength in service due to weathering, corrosion, abrasion or other causes where the type of mat
33、erial used requires such protection. 7 Local indentation performance 7.1 Roller test 7.1.1 Apply a8 900N (2 000 lbf) load by steel roller,51 mm (2 in) long by 25,4mm (1 in) diameter as shown inFigure 2. 7.1.2 Apply a 8 900 N (2 000 lbf) load parallel to the base over an area of5,1mm (0,2 in) long by
34、4,8mm (0,19 in) wide on the vertical face of the edge as shown in Figure 2. 7.1.3 The maximum indentation (permanent set) allowed at any location of the base shall be0,25mm (0,01 in) for the above tests. 7.2 Ball test 7.2.1 Subject the pallet base surface or a representative portion thereof to a for
35、ce of4 005 N (900 lbf) using a 25,4mm (1 in) diameter steel ball. 7.2.2 There shall be no permanent indentation in excess of0,5 mm (0,02 in). 8 Test No. 1 Bridging and cresting test (surface mode) 8.1 General This test is intended to prove the ability of the pallet to traverse from one item of handl
36、ing equipment to another when the level of the conveyor surfaces are not in the same plane. At the point where the pallet balances on the end of the higher surface, the entire load is supported by one row of rollers. 8.2 Procedure Load the pallet to its maximum gross weight less the tare of the pall
37、et and net. Traverse the pallet on a roller system compatible with the minimum requirements of ISO4116 2)pass it across a stepped junction with another similar roller system, with the height difference at the junction being not less than152 mm (6 in). With the point balance (cresting) at the edge of
38、 the higher platform, hold the pallet in this position for a minimum of5s. Then allow the rear end of the pallet to drop from the higher platform onto the lower roller platform. 8.3 Requirements Upon completion of the test, the pallet shall show neither permanent deformation nor abnormality which wi
39、ll render it unsuitable for use. The dimensional requirements affecting handling, securing and interchange shall be satisfied. 2) Equivalent to IATA AHM 911.BSM71:1994 4 BSI 01-2000 9 Test No. 2 Horizontal load test (operational loads) 9.1 General This test is intended to prove the ability of the pa
40、llet to withstand the maximum operational horizontal loads that may be experienced during handling and transportation. 9.2 Procedure Secure the pallet under test, together with a net meeting the requirements of ISO 4170 or IATA Standard Specification50/2 to the aircraft restraint system or a system
41、equivalent to each of those shown in ISO 8097, applicable to the pallet configuration. Apply a test load equal to the maximum gross weight less the tare of the pallet plus net horizontally to one side of the pallet and net assembly. Simultaneously apply downwards an equal test load to the top surfac
42、e of the pallet. Repeat the test with the test load applied to the side perpendicular to the one tested previously. 9.3 Requirements Upon completion of the test, the pallet shall show neither detrimental permanent deformation nor abnormality which will render the pallet unsuitable for use. The dimen
43、sional requirements affecting handling, securing and interchange shall be satisfied. 10 Test No. 3 Upward load test operational loads 10.1 General This test shall be carried out to prove the ability of the pallet to withstand the maximum operational upward loads that may be experienced during handli
44、ng and transportation. Figure 2 Local indentation loadingBSM71:1994 BSI 01-2000 5 10.2 Procedure Secure the pallet under test, together with a net meeting the requirements of ISO 4170 or IATA Standard Specification50/2 to the aircraft restraint system or a system equivalent to each of those shown in
45、 ISO 8097, applicable to the pallet configuration. Apply a test load upwards on the pallet and net assembly equal to the maximum gross weight less the tare of the pallet plus net. 10.3 Requirements Upon completion of the test, the pallet shall show neither detrimental permanent deformation nor abnor
46、mality which will render the pallet unsuitable for use. The dimensional requirements affecting handling, securing and interchange shall be satisfied. 11 Execution of test Pallets shall be subjected to each of the tests specified in clauses 7 to 10, unless evidence can be shown that the subject unit
47、is equivalent to other units which have performed satisfactorily in these tests. The tests shall be made in the first instance in conjunction with the pallet net specified in ISO4170. 12 Markings 12.1 Mandatory markings All pallets in conformity with this International Standard shall be permanently
48、marked (engraved) at two locations on the top surface not more that25,4mm (1 in) from the outer edge of the pallet, preferably at the extreme outer edge. The markings shall be positioned on two sides diagonally opposite to one another between 100 mm (4 in) and 300 mm (12 in) from the corner (see Fig
49、ure 3). These markings may additionally be engraved on the edges adjacent to the surface markings. Each pallet shall carry at least the following markings: a) ULD Identification Code; b) the maximum gross weight, in kilograms and pounds (optional); c) the actual tare, in kilograms and pounds. 12.2 Additional optional bar code markings In addition to the mandatory markings as specified in 12.1, each pallet may optionally be marked with a bar-coded Identification Code. If so marked, four bar code label
