Accession Number : ADA154669

Title :   Nuclear Thermal Transmittance in the Atmosphere Using LOWTRAN-6 Computer Code.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : Leonard,J M

PDF Url : ADA154669

Report Date : Mar 1985

Pagination or Media Count : 66

Abstract : The purpose of this thesis is to provide the nuclear weapons-effect analyst with accurate transmittance data for burst/target geometries and atmospheric conditions in which thermal radiation effects are of significance, yet without having to run a complex computer code for each specific case being investigated. Transmittance values for several realistic sets of atmospheric conditions were obtained using the 1962 U.S. Standard Atmospheric Model and the LOWTRAN Rural, Urban, Maritime, Tropospheric, and Stratospheric aerosol models. Boundary layer (0 - 2 km) transmittance calculations, using the Rural, Urban, and Maritime aerosols, were accomplished for sea-level visibilities of 5, 10, 15, and 23 km. A computer program was developed to weight the LOWTRAN-6 output transmittances according to a 6000 K Planckian distribution, simulating a nuclear weapon source. The geometry chosen is for the region where thermal radiation has a significant damage potential to Air Force systems; altitudes from sea-level to 20 kilometers, and ground ranges from 0 - 25 kilometers from weapon ground-zero. The results are displayed in a graphical format, providing the user with accurate nuclear thermal atmospheric transmittance data.

Descriptors :   *NUCLEAR WEAPONS, *ATMOSPHERE MODELS, *THERMAL RADIATION, COMPUTER PROGRAMS, SOURCES, AIR FORCE, AEROSOLS, DAMAGE, MODELS, THESES, BOUNDARY LAYER, TRANSMITTANCE, MARINE ATMOSPHERES, FORMATS, GRAPHICS, RADIATION EFFECTS, STRATOSPHERE

Subject Categories : Atmospheric Physics
      Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE