\ZUNT) Project 5.7 - Thermal Flux and Albedo Measurements from Aircraft Cart RR, L. Dresecr OR ITATIVeS The objective of Project 5.7 participation on this shot was to obtain thermal flux and albedo information of a nuclear detonation with airborne calorimeters, radiometers, and sixteen millimeter motion picture cameras. INSTRUMTNTAT TION Instrumentation withir the purview of Project 5.7 which was in- stalled? in the B-47 intluted ninctecn N@DL calorimeters and two NADL radiemcters for measuring the direst and surface reflected thermal ratiation, Six ecslorimeters were utilized to measure thermal radiation which was back-scattered toward the cackpit, Seven GSAP N-9 cameras were utilized to cbhtain photograrhic coverage cf the fireball, the earth's surface, ani of clouds beneath the aircraft, and also of any reflecting surface such as a cloud which could contribute to the backecattere? ratzistion. Poogeet €,7 instrumniztion on the B-52 included the mste 21 instruments for thermal radiation measurements, but only an additional two instruments were utilizei for back-scatter measurements, Eight GSAP cameras were installed for photocraphic coverage. Project 5.7 instrumentation on the B-57 consisted of the basic twenty one instruments and six cameras, Profect 5.7 instrumentation on the B-66 consisted of the basic twenty one instruments and twelve cameras. Neither tactical bomber (8-44, B-57) was instrumented for measuring - 72 ~

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