\y . co Project 2.66 = Marly Clou! Penetration - “ol *. &. Pinson To collect and ewaluatc data relating to radfation dose rate vs time in radioactive clouis from thermonuclear veapons. To measure and evalus'c the ra'jx‘ton hazards associated with the residual contamination on adrereft whick have flown through thermo. clear clowds at early times after tetonation, To measure the turbulence in 1 t>-oronuclear clout at early tims after detonation. Radiation dose rate inside the cloud we time after detonation. The extent ani quality of the residusl contamination on “he aireraft after landing. INSTRIMENTATION OF ~“CHYTQUTS Instrumentation was the same as for the -%) COMEROKEC) Por ne0, penetrations wevr made at H 4 52, 68, and 78 minutes 4 at ‘altitudes varying from 39,0C feet to 46,90 feet. These penetrations were all "Nip" penetrations in which tne pilot flies into the elowd, makes a 190 degree turn an! lias out of the cloul. The time fr tha ratioactive cloud vwarief from 2 to 4 minutes. ROSULTS The jose rates in the cloud ani the total tose received on the mission vere as preiicte? or below, Y The average dose rates in the cloud for ae. 3°, 32, and 37 rfhr respectively, The total joens receive! by tne pilots 3EST AVAILABLE COPY - 42 - SOB

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