-. - ‘Y%... Downloaded from https://www.everyspec.com . MI~~STD-810D 19 Ally ‘1983. k. Shortened operat.ing lifetime. ., .. m. High internal pressures oreated within sealed cases of projectiles, bombs, etc”. 1. Solid pellets or grains separating. .. n. Burning of explosives or propellants accelerated. I o. Cast explosives expanding within their cases. I P. Explosives melting and exuding. q: Organic materials tending to discolor, crack, or oraze. I-3 FOR ~ AND ~ .. . . NOTE: This test method should be applied at the end of the tailoring process described in sections 1 and 4 of this standard. ,,,.. a.
This method is used when the test item ia likely to be deployed in areas where climatic conditions will induce high temperature within the teat item. These procedures will be used when it is judged that the test item performance can temperature and that the during other tests (e.g., be verified by chamber exposure to controlled air high temperature effects have not been identified temperature-altitude, solar radiation). . The primary objectives of the high-temperature teste b. ~: are to determine if: . ... 0 (1) The test item will operate’without degradation in, or after storage in, a climate which induces high temperatures within the test item. ,...,.
....’ (2) The test item can be oPerated and handled without affecting its ., integrity.’ ,.. ,. .,. (3) The test item is safe during and following high-temperature exposure. c. ‘&atrictiou. ” This method is not applicable for: ,, ,,. ..... (1) Evaluation of equipment in a high-temperature environment where solar radiation contribute to differential heating or actinic (photochemical] effects. For such an environment, use method 505.2: .s (2) Identification of time-dependent performance degradation which occurs during long-term storage in or exposure to high temperatures.
(Such testing would require extended test exposures.) Selection of test durations and conditions for such extended exposure wOuld ‘have to be based uP?n”a specific test program requirement and ,consideration given”to natural environ- mental testing. (3) Equipment to be installed where the influence of altitude ‘or cooling air may be.significant. METHOD 501.2 19 JUIY 1983 501.2-2