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Chapter
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CONCLUSIONS and RECOMMENDATIONS
5eL
INSTRUMENTATION
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The family of self-recording gages for measuremerit of blast wave
i (paraneters obtained results which in some respects compared favorably
ywith
corresponding electronic instrumentation.
Peak overpressure
'
\ Jheasurements agreed very well, Reasonably good agreement was apparent
~~"when.,wave shapes were compared on shots in which the modified gage
was; used,
Even though the field modifications to the pressure time
gage jalleviated a large portion of the acceleration effects, addition-
al pédifications appear to be advisable.
“~FRe "a" gage produced excellent results which compared very well
with the electronic instrumentation.
Continued use of these types of
gages on
allifuture tests is strongly recommended.
The peratch-type self-recording accelerometer appears to be
capable dfproduc: g good results and should be more fully utilized in
future tests. { C1)
oN
5.2 TEST ResuLme) )
The validity of the cube root scaling law to scale distances for
yields as great as LA.S“MT appears to have been well substantiated.
The dynamic pre
ly in agreement with
0.43 to 135 psi.
s obtained on Shots 3, 4, and 6 are apparent-
oret-ical values over a dynamic pressure range
The overpressure attenpdation observed on Shot 3% would seem to
indicate that a significant) yeduction in pressures can result when the
shock wave passes over an
a in which precipitation is occurring.
The overpressures obtained o
#1. shots appear to substantiate an
assumption that the overpressures:
ained from 4 surface burst on
water and coral atolls are the sag“as would be obtained from a burst
of 1.6 the yield in free air.
The zero intercepts of the height
burst curves as published
in T 23-200 appear to be valid, seater of the reasonably [ood ayree-
ment with the results of these shots.
-
From the records obtained with theigdelf
rding vages there was
no apparent evidence of the existence of a prepadcor on any of the test
shots.
pond
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