Accession Number : AD0785586

Title :   An Arc Imaging Furnace for the Characterization of Thermally Protective Materials.

Descriptive Note : Final technical rept.,


Personal Author(s) : Earley,D. E.

Report Date : JUN 1974

Pagination or Media Count : 32

Abstract : An ADL-Strong arc imaging furnace was modified for ablation investigations of protection materials in thermal radiation environments. Radiances up to 180 cal/sq cm-sec were generated over an irradiance zone of 9 mm diameter. Proportionately lower fluxes were also obtained over larger zones, e.g., up to 254 mm in diameter. Significant improvements were made in irradiance exposure times through the use of solid state timing and control device involving automatic sequencing at both the shutter and dowser. The modified arc image furnace was also shown to be useful for investigating materials in contamination-free environments involving vacuum, air or inert gas. The arc imaging furnace was demonstrated to be a versatile tool for research on thermal protection materials, such as fire protection fabrics and coatings, thermal flash resistant coatings, heat resistant paints, ablators, and for the study of crystalline materials at high heating ratings. (Modified author abstract)

Descriptors :   *Ablation, *Electric furnaces, Test equipment, Infrared equipment, Infrared images, Ablative materials, Thermal radiation, Electric arcs, Fabrics, Coatings, Fire resistance, Plastics, Paints

Subject Categories : Air Condition, Heating, Lighting & Ventilating
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE