Downloaded from https://www.everyspec.com “MIL-STD-81OC CONTENTS FIGURES (Cent‘d) Page Figure 519.2-1 Low frequency sinusoidal superimposed on random vibration Sinusoidal vibration prediction surface Random vibration prediction surface, 519.2-37 519.2-38 - 519.2-39 Figure 519.2-2 Figure 519.2-3 high frequency Random vibration prediction surface, 519.2-40 - 519.2-41 Figure 519.2-4 1ow frequency Test level reduction, AH, due to gun 519.2-42 - 519.2-43 Figure 519.2-5 standoff parameter, h/c Example of gun configuration,free air Test level reduction, AR, due to depth 519.2-44 519.2-45 Figure 519.2-6 Figure 519.2-7 parameter R~ The distance parameter, D, and the 519.2-46 ‘Figure519.2-8 depth parameter, Rs Test level reduction, AN, due to equip- 519.2-47 Figure 519.2-9 Figure 519.2-10 Figure 519.2-11 ment mass loading Multiple guns, closely grouped 519.2-48 519.2-49 random prediction surface Multiple guns, dispersed .
Determining the OAMS from the random Locator frequency, fo’ for high frequency 519.2-50 519.2-51 Figure 519.2-12 ‘.,Figure519.2-13 test curves Normalized area under the low frequency 519.2-52 Figure 519.2-14 random curve as a function of f/f. and Bf Normalized area under the high frequency Figure 519.2-15 519.2-53 random curve as a function of f/f.
and Slope factor, 6f, for the low frequency Figure 519.2-16 519.2-54 Figure 519.2-17 random surface Slope factor, f3f,for the high frequency 519.2-55 random surface Transfer function for isolated equipments, 519.2-56 Figure 519.2-18 Category I(a) Transfer functions for non-isolated equip- 519.2-57 .Figure51,9.2-19 ments, Category I(b) Basic test tolerance (A) for gunfire spec- 519.2-58 “Figure519.2-20 trum (W 10 lbs) 519.2-59 viii