Downloaded from https://www.everyspec.com MIL-STD-81OD 19 July 1983 1.15P Ideal Sawtooth Pulse / Tolerance Limits i / # ; / /1 7 ,/4 .07D, p .05P .15P. / Il. / .2P .~L ___ Ref.Line 1 . 3 .05p J%7-::z’:2’--- -.3p’ P MINIMUM PEAK VALUE NOMINAL DURATION (D) ms TEST (P) FLIGHT VSHICLE GROUND FLIGHT VRHICLE GROUND EQUIPMSNT 1/ EQUIPMENT EQUIPMSNT 1/ EQUIPMENT a b c d Operational Test 20 40 2./ 11 11 - 0 Crash Safety 40 11 6 M Shock parameters a and o: recommended for equipment not shock-mounted and weighing less than 300 pounds. 2/ Equipment mounted only in truoks and semitrailers may uae a 20g peak value. NOTE:
The oscillogram shall include a time about 3D long with a pulse located aDDrOXiMStely in the center. The peak acceleration magnitude of.the sawtooth Dulse is P and its duration is D. The measured acceleration pulse shall be ~ontained between the broken line boundaries and the measured velocity change (which may be obtained by integration of the acceleration pulse) shall be : within the limits of Vi -~.1 Vi, where Vi ia the velocity change associated with the ideal pulse which equals 0.5 DP. The integration to determine velocity change the pulse to O.1D after the ,,, shal1 extend from 0.4D before pulse. FIGURE 516.3-4. ooth ..,.. [for uaa w~ resmanse soectrum tv ia not avaiw. ,: ,., ,..
METHOD 516.3 19 July 1983 516.3-8