MULTIPLE THREAT CRATERING EXPERIMENT. VOLUME 1. SUCCESSIVE CRATERING IN HARD ROCK
Abstract
A research program compares successive craters formed by high- explosive charges detonated in basalt along a common vertical axis with single explosions equivalent in yield to the sum of the successive burst. Studies include craters and ejecta distribution; energy coupling of cratering explosions at and near the ground surface; charge shape effect on craters and related phenomena; and distribution, size, and weight of discrete ejecta missiles. Results indicated that the excavated crater depth may be increased by a fourth half-buried successive shot. This increase is between zero and 25 percent, depending on the technique used. The data were not conclusive. The apparent crater formed by a hemispherical surface charge exhibits a radius about 90 percent and depth about 85 percent of the dimensions formed by a corresponding spherical, half-buried charge. Excavated craters formed by hemispherical charges are likewise smaller.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1967
- Accession Number
- AD0815661
Entities
People
- Gerrad D. Jones
- John E. Seknicka
- R. H. Carlson
- Thomas E. O’brien
Organizations
- Boeing