ay Bow) @ Project 5.7 - Thermal Flux and Albedo Messuresenta from A‘rereft Capt R. L. Dresser QBSECTIVE The objective of +*ie abot was to obtain thermal flux and albedo information fram a nuclear detonation with airborne calorimeters, radiometers, and léam action picture cameras. TESTRIMEITATION Instrmentaticon vithin the purview of Project 5.7 which was installed in the B-57 included 19 NRDOL calorimeters and 2 NRDL radiometers for measuring the direct and surface reflected thermal radiation. These instruments possessed various fields of view and vere suitably filtered to obtain qualitative spectral distribution information. Six GSAP N-9 cazeras were utilised to obtain photograpbic coverage of the fireball, the earth's surface, and of clouds beneat! the aireraft. ‘Two of the caseras oriented toward ground sero vere equipped with spectroscopic attachzente to obtain continuous spectre in the visible region. Of the other two tail position cameras, one camera hed a blue filter and the other had a red filter for the porpose of obtaining pictures at both extremes of the visible region of the spectrums. The remaining two cameras were oriented vertically for the purpose of obtaining photographic coverage of the eartt's surface and of clouds beneath the siroraft. Instrumentation installed in the B-60 consisted of the besic 21 thernal instruments, and 12 cameras. Tvo cameras equipped with spectroscopic attachments vere operated in e the BG&G Parry photo “BEST AVAIL ALE COPY a A rn - 2 2) @