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BS 5F 118:2002

BS 5F 118:2002

$86.31

50 g/m2 nylon parachute fabric

Published By Publication Date Number of Pages
BSI 2002 12
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This British Standard specifies the requirements for a range of nylon fabrics, of nominal mass per unit area of 50 g/m2, for aerospace purposes, primarily for parachute canopies.

NOTE The information to be supplied by the purchaser in the contract or order should be as listed in Annex A.

PDF Catalog

PDF Pages PDF Title
1 BRITISH STANDARD AEROSPACE SERIES
2 Committees responsible for this British�Standard
3 Contents
5 1 Scope
2 Normative references
3 Terms and definitions
heat ageing
intermingle
4 General requirements
4.1 In addition to the requirements specified in Clause
4.2 The breaking force and elongation at break of the yarn (see�
4.3 The yarn twist shall be determined in accordance with BS�EN�ISO�2061, except that the number …
6 General requirements (given in BS�F�100)
5 Yarn
5.1 Type
5.2 Properties
7 Yarn twist
6 Manufacture
6.1 The weave shall be plain.
6.2 In fabric�1302 a single black thread, the same count as the warp ends, shall be included in t…
6.3 When fabric woven as 1302 is used to produce fabric�1307, the black identifying thread shall …
7 Finish
7.1 General
7.2 Dyeing
7.3 Calendering
8 8 Construction and properties of finished fabric
8.1 When tested in accordance with
8.2 The minimum usable width of the finished fabric shall be 920�mm unless otherwise stated by th…
Construction and properties of finished fabric
9 Permeability
Permeability requirements
10 Water extractable matter
11 Identification
9 (informative) Information to be supplied by the purchaser
(informative) Information to be supplied by the purchaser
(normative) Heat ageing test
(normative) Heat ageing test
Principle
Apparatus
Tensile testing machine
Laboratory oven
Suitable timer
Wrap wheel
Heat-resistant gloves
Means of suspending the yarn samples in the oven
Tie-on labels
Conditioning and testing atmosphere
Test specimens
Unwrap and discard the surface layers from each package to be tested.
Using the wrap wheel, run off from each package sufficient yarn to carry out five tests.
Tie the free ends together to form a skein, release the retractable arm of the wrap wheel, and re…
Double the skein and attach a label noting the specimen reference.
Repeat
Procedure
Set the oven temperature to (180 ± 2)�°C.
For the yarn that is to be heated, suspend each folded skein from a bulldog clip on the rod, or f…
10 When the oven is at the required temperature, open the oven door, immediately insert the rod or h…
Start the timer.
After (60 ± 1) min, put on heat-resistant gloves, open the oven door and remove the rod or frame.
Hang the skeins to condition in the standard atmosphere for testing defined in
Using one of the following sets of conditions, determine the breaking strength of the unheated an…
Record the breaking strength in newtons to the nearest 0.1�N.
Calculation and expression of results
Calculate the mean breaking strength for the unheated control sample and for the heated sample in…
Calculate the percentage strength loss as follows:
Report
Report the percentage strength loss of the material tested to the nearest 0.1�%.
Report the test conditions used (see

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BS 5F 118:2002
$86.31