a, BREEoo ) Project 5.7 - Thermal Flux and Albedo Measurements from Aircraft Capt. R. L. Dresser OBJECTIVE The obsective of Project 5.7 participation on this shot was to obtain thermal flux and albedo infcrmation of a nuclear detonation with airborne calerimeters, radicmeters, and sixteen millimeter motion picture cameras. INSTRIM™TATION Instrumentation within the purview of Project 5.7 which was installed in the B-47 included nineteen NRDOL calorimeters and two NROL ratiometers for measuring the direct and surface reflected thermal radiation. Six calorimeters were utilized to measure thermal 4 étiation which was back-scattered toward the cockpit. Seven GSAP “-9 camcras were utilized to cbhtain photograchie coverage of the Fireball, the earthts surface, and of clouds benezth the aircraft, and also cf any reflecting surface such as a ecleud which could contribute to the back-scattered radiation, ins ce ei Q y’ my) Project 5.7 instrumentation on the 252 included the twenty one ruments for thermal radiation measurements, but only an ch aidi icnal two instruments were utilized for back-scatter measure= ments, Eicht GSAP cameras were installed for photegraphic coverage. Project 5.7 instrumentation on the B-57 consisted of the basic twenty one instruments and six cameras. Project 5.7 instrumentation on the B-66 consisted of the basic twenty one instruments and twelve cameras. Neither tactical bomber (B-66, 3-57) was instrumented for messur-~ ing back-scattered thermal radiation. - ~51- The twenty ene basic therzal

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