Shaped Charge Jet Breakup Studies Using Radiograph Measurement and Surface Instability Calculations
Abstract
A study of the shaped charge jet breakup phenomenon is undertaken by two approaches. In the first approach, jet velocity, jet breakup time, and jet radius distributions are measured using timed flash radiographs of broken jets from eleven different shaped charge designs. Experimental results are correlated to theoretical predictions and a semi-empirical jet breakup time vs. jet radius curve is presented for copper lined charges. The second approach applied the concepts of hydrodynamic instability to shaped charge jets. A numerical study of the effects of yield strength, inertia forces, surface disturbance wavelength, and irregular random surface disturbances is presented. Results indicate that high yield strength and low density jet materials will both cause earlier breakup. A critical range of disturbance wave-lengths exists in shaped charge jets; if a random surface disturbance is imposed, a critical wavelength will prevail and eventually cause the jet to breakup into segments with lengths approximately equal to experimentally measured values.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1977
- Accession Number
- ADA040444
Entities
People
- C. A. Tanzio
- J. Carleone
- P. C. Chou
- R. D. Cicarelli