AIRBLAST OVERPRESSURE AND DYNAMIC PRESSURE OVER VARIOUS SURFACES
Abstract
Static overpressure and dynamic pressure versus time were measured over surfaces possessing different physical properties on two tower shots, 6 and 12. On shot 12, three surfaces were provided: the natural desert, a water surface consisting of a flooded area, and an asphalt surface. On Shot 6, desert and asphalt areas only were available. There were 123 channels of instrumentation installed for Shot 12, and 24 for Shot 6. The data show the effect of the nature of the surface upon airblast phenomena from a nuclear explosion. Although the indication is that the Shot 12 water line did not provide entirely ideal conditions over its whole length, the measured disturbances were markedly less than those observed on the desert line. The results from the asphalt line show most severe deviation from classical behavior. The effects of surface conditions upon shock phenomena are made more understandable by a review of temperature computations, using shock wave parameters in addition to an analysis based upon the arrival time of the thermal pulse. A phenomenological discussion of precursor formation is presented, and comparisons are made using data from all known precursor-forming nuclear shots.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 09, 1957
- Accession Number
- AD0617182
Entities
People
- D. C. Sachs
- F. M. Sauer
- L. M. Swift
Organizations
- SRI International