Downloaded from https://www.everyspec.com MIL-STD-810D 19 July 1983 TABLE 514 .3-IV. ~ EQUIPMENT LOCATION SLJURCE FREQUENCY Fi (Hz) VALUE OF W2 & Ft PEAK VIBRATION LEVEL Li, AT Fi in G 5-25 0.5 +0.1 (Fi - 5) W2 = 0.002 ,,. 25-40 2.5 GENERAL~ Ft = 500 40-50 2.5 - 0.1 (Fi-40) 50-500 1.5 ON INSTRUMENT 0.7 x GENERAL PANEti/ EXTERNAL STORE~ 1.5 x GENERAL ON OR 5-50 0.5 + 0.1 (Fi-5) NEAR DRIVE SYSTEM W2 = 0.0,2 ELEMSNT~ 50-2000 5.0 + 0.01 (Fi) Ft = 2000 ) II F2 = 2F1, F3=3FI, F4=4F1. Choose Fi from figure 514.3-29 and table 514.3-V. 2/ F1 - F4 should be chosen based on drive train source frequencies. METHOD 514.3 19 July 1983 514.3-43