MEASUREMENTS OF AIR-BLAST PHENOMENA WITH SELF-RECORDING GAGES
Abstract
The self-recording mechanical gages developed for recording over- pressure versus time and dynamic pressure versus time were installed on 12 shots. For several shots more than one blast line was instrumented. In addition to these blast lines, gage stations were prepared in locations to meet specific data requirements, such as in the vicinity of structures, and in particular on a circle of gages at a radius of 2,500 feet on Shots 12 and 14. Furthermore, a very-low-pressure gage was employed to record the wave shapes and magnitudes at large distances from the explosions. Particular application of this gage was made on Shot 10. The gages performed well, and the results were a wealth of data on a wide range of yields for a variety of surface conditions. Tabulations are presented of peak overpressure, positivephase duration and arrival times at ground surface, and peak dynamic pressure, peak total overpressure, and peak static overpressure at the 3-foot level. The curves for peak overpressure versus distance and peak dynamic pressure versus distance are shown plotted as observed and reduced to 1 KT at sea level in comparison with appropriate curves from TM 23-200 and ideal pressuredistance curves.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 16, 1959
- Accession Number
- AD0617170
Entities
People
- E. J. Bryant
- J. H. Keefer
- N. H. Ethridge
Organizations
- Ballistic Research Laboratory