Downloaded from https://www.everyspec.com 1 MIL-STD-81OD 19 July 1983 (1) There is no innnediateeffect of the water on the operation of the test item. I (2) The test item in its operational configuration (transit/storage case open or removed) shall successfully complete the induced temperature/ humidity procedure of method 507.2 for the geographical area in whioh it is designed to be deployed. I-4.2 ~. Experience has shown that a temperature differential between the test item and the rainwater can affeet the outcome (leakage) of a rain test.
It is recommended that whenever possible, the test item temperature be at least 10° C (18oF) higher than the rain temperature at the beginning of each 30-minute exposure period to produce a negative pressure differential inside the test item. I I-4.3 Sxnmarv of test informat~ reauired. The following information is required in the test plan for adequate conduct of the test= of section II: a. Test procedure(s). b. Test item configuration. c. Rainfall rate. d. Test item preheat temperature. e. Exposure surfaces/durations. f. Wind”velocity. s. Water pressure. h. Water temperature. i,. Additional guidelines. a. AR 70-38, -arch. Dev-ent.
Test ~ tion of Materiel for ~treme Climatic ~, 1 August 1979. b. MIL-STD-21O, Umatic Extremes ~, 15 December 1973. . c. s of dMe terial for ~ Clima -- tic Extremes for Mill arv ~. . t Bedford, MA: Air Force Cambridge Reeearch Laboratories, 1974. DTIC number AD-780-508. ,.:. d. Army Materiel Command Pamphlet AMCP-706- 16, ins!D@.gII METHOD 506.2 19 July 1983 506.2-6