This section specifies the purpose and application of high-temperature testing in military equipment laboratories, cutting guidelines, information requirements, testing requirements, testing processes, and content analysis of results. This section is applicable to high-temperature testing of military equipment. 2. The relevant clauses in the following documents become the clauses of this part through reference. Any subsequent amendments (excluding corrected content) or revised versions of the cited documents with the 8th issue or revision are not applicable to this part. However, it is recommended that all parties using this part explore the possibility of using its latest version. For references without date or revision, the latest version applies to this section. GJB 150.1A-2009 Environmental Testing Methods for Military Equipment Laboratories Part 1: General Requirements GJB 150.7A-2009 Environmental Testing Methods for Military Equipment Laboratories Part 7: Solar Radiation Testing GJB 1172.2-1991 Climatic Extreme Ground Temperature GJB 4239 Equipment Environmental Engineering General Requirements 3 Purpose and Application 3.1 Purpose The purpose of this test is to obtain relevant data to evaluate the safety of equipment under high temperature conditions The impact of integrity and performance. 3.2 Application This test is applicable to the evaluation of equipment used in high-temperature environments. 3.3 Limitation: This test is only applicable to thermal effects with relatively short evaluation time (months rather than years) and uniform heat distribution throughout the specimen. It is generally not applicable to: a) evaluating the effect of performance degradation over time during long-term stable exposure to high temperature conditions (storage or work) (as this may include some superimposed effects). This high-temperature degradation effect should be evaluated using natural environmental tests. b) Evaluate the thermal effects caused by solar radiation, as it produces significant temperature gradients in the equipment. The direct irradiation effect of the sun should be evaluated using Procedure I of GJB 150.7A-2009. c) Evaluate photochemical effects (photochemical effects were evaluated using Procedure II of GJB 150.7A-2009). d) Evaluate the aerodynamic heating effect
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