ECSS-Q-ST-70-21C – Flammability testing for the screening of space materials (5 February 2010)


This Standard defines a multi­test procedure for the determination of the flammability characteristics of non­metallic materials under a set of closely controlled conditions. The test procedure covers both individual materials and materials used in configuration. This Standard describes a series of tests to provide data for aid in the evaluation of the suitability of materials for use in a space vehicle crew compartment. The data obtained are in respect to the ease of ignition and the flame propagation characteristics of materials.

All non­metallic materials are inherently flammable, the degree to which this is true is dependant on the chemical nature of the material itself and the environment to which the material is exposed. In the closed environment of a manned spacecraft this can lead to a potentially dangerous situation and close control is therefore required.

This standard may be tailored for the specific characteristics and constrains of a space project in conformance with ECSS-S-ST-00.


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This Standard cancels and replaces ECSS-Q-70-21A (4 October 1999).