Evaluation of heat- and blast-protection materials
J. D. Morrison, B. J. Lockhart, United States. National Aeronautics and Space Administration, John F. Kennedy Space Center
National Aeronautics and Space Administration, 1971 - Technology & Engineering
A program was initiated at the Kennedy Space Center in December 1967 and conducted through December 1969 to evaluate the performance of heat- and blast-protection materials for ground support equipment used during the Apollo/Saturn launches. Materials believed to be generally suitable for heat and blast protection were subjected to launch-exposure tests. Tests were made during the Apollo/Saturn 502, 503, and 505 launches. Tests were also made in a local laboratory, as an alternative to the restrictive requirements of launch-exposure tests, to determine the effects of torch-flame exposure on ablative materials. Five materials were found to be satisfactory in all major test categories. It was determined that torch-flame tests can probably be utilized as an acceptable substitute for the booster-engine-exhaust exposure tests for basic screening of candidate materials.
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435 RPR Raycom 502 Launch Exposure A/S 502 Launch Ablative Ablative Ablative Aerozine 50 Application satisfactory ASTM Back-Face Temperature blast-protection materials Booster Engine Exhaust Brush Char Removal Coating Material coats applied Dow-Corning 93-072 Dow-Corning Dynatherm D-65 Dynatherm E-310F Engine Exhaust Exposure evaluation exposure test Final coating weights flame Flammability Goodrich heat and blast heat-resistant coating hydraulic fluid Hypergolic Insignificant Insignificant Kennedy Space Center Korotherm Lab-Clean1 launch structures launch-exposure tests Loss After Char Loss Before Char LOX-impact tests MAB Preparation Martyte Mobile Launcher MTB MTB MTB primer Raycom 2138 RPR Raycom 435 RPR Raycom RPR 2138 refurbishment Results of Booster Satisfactory Not tested Satisfactory Satisfactory Satisfactory specimen steel Bare steel steel Zinc-coated steel strength of material suitable for vertical Tensile strength test panels tested Not tested tested Satisfactory Satisfactory Tests on Ablative Thermo-Lag Thickness Loss torch test Trowel Trowel Trowel Uneven ablation Unsatisfactory Unsatisfactory Upcote Weight Loss Zinc-coated steel Zinc-coated