Accession Number:

ADA190663

Title:

Experimental Confirmation of Superposition from Small-Scale Explosions

Descriptive Note:

Final rept. Jun 1984-Dec 1985

Corporate Author:

AIR FORCE WEAPONS LAB KIRTLAND AFB NM

Personal Author(s):

Report Date:

1987-11-01

Pagination or Media Count:

39.0

Abstract:

An in situ experimental program is implemented and analyzed to test linear superposition. After separating stochastic and deterministic propagation path effects, direct superposition is experimentally validated for two 5-lb charges spaced as close as 2 m in alluvium. Finite spatial source effects are observed and modeled in the plane passing through two charges separated by 2 to 10 m. The deterministic single-burst waveforms are used to model the multiple burst data. The effects observed and modeled include direct superposition below the corner frequency, shift to lower corner frequency with charge separation, and spectral scalloping. For charges closely spaced up to 4 m, observed at 20 m, 24 m the primary effect on the waveform is replicated by constant delay time between two identical waveforms. For charges spaced by 10 m observed at 20 m, 30 m the effects of propagation path differences must be included. These effects result in smoother spectra.

Subject Categories:

  • Explosions

Distribution Statement:

APPROVED FOR PUBLIC RELEASE