Ltrs cane @ the rate of growth may be readily apparent. 1 i As such, it can greatly aid tod ers endl: SydrodynauteYields . + Some quick estimutes of yield were made on K-Day using hydrodynemic measurements from Parry, which are reported in Appendix B of the KI Shot SNia i Cursory Report. These results are of interest here because of their hydro- : dymate implication. BEST AYAILABLE COPY Based on the thecretical predicted values for homogeneous sedia, and tine of arrival neasuresants at the Parry Compound and Sandia Corporation's station, the inilcosted tonmges from KITE) were in the order of 520 KT and 500 EY. This low value, as compared with the fireball yield, is reasonable and consistent with the experiences om MIX™. =; It is probably the result of long range atacapberic inhomogeneity of the atmosphere. Based agaiz; on the theoretical curves, and Sandia's measureoent of the blast wave at Parry, the indicated yield is about 850 EK; this is to be com pared with = predicted value of 3.9 seconds for 500 K¥. ‘This again is consistent with experience on MIKE, with the possibilities being: atnospheric refraction effects, reinforcemmt of the shock wave by thermal radiation, and an experimmtal tendency to read long becanse of hysteresis wffect oa the gauge, or the flat pressure-time curve on long duration waves. fandia Corporation measured a peak pressure of 0.36 pei on Parry, in comparison with 0.7 pet for an ideal surface and homogeneous mediuny 0.45 psi as predicted from a rough estimate of the refraction effect, based on MIKX; SNL : Beierte BhReamBh + Me ; “ie ae aa er ae eee eee . ‘er 2 . ’ a ee SF 2 ge aeaapyeHe a a =.ge ar from NIKE, and prectionlly the same ag the 0.35 pei observe’ on Farry from re a3 bY Curiously enough, this is exactly the same pressure observed on Parry aa i MIXE. 7 lat Sree or finslly about 6.1 pei, which vould be indicated by straight sealing froa Pee yedyTonersee.yan Sete Sh d AILO pasis. ae - , in establishing the basic hydrodynamics of the blast wave on a firm empirical min a o .Citasoe ue a 3id ratot rite H ial al cen @ 2 or 2 “ee a oe eee Fo