Accession Number:

AD0016379

Title:

INFLUENCE OF DENSITY AND INERT ADDITIVES ON THE WAVE SHAPE OF ' 'IDEAL' ' EXPLOSIVES

Descriptive Note:

Technical rept. no. 17

Corporate Author:

UTAH UNIV SALT LAKE CITY INST FOR THE STUDY OF RATE PROCESSES

Personal Author(s):

Report Date:

1953-07-01

Pagination or Media Count:

49.0

Abstract:

Measurements of the ratio of the radius of wave curvature to the diameter Rd vs the density rho were made for the following ideal explosives for which the detonation velocity equals the hydrodynamic velocity AD-14820 TNT, pentolite, and mixtures of TNT and pentolite with salt. At a 6-diam charge length, Rd varied almost linearly with rho. In TNT, a sharp discontinuity which occurred at rho 1.35 was attributed to particle breakdown during the high- density pressings. In measurements of Rd vs charge length L for pure RDX and 4060 RDXNaCl, RL remained constant at unity up to Ld2.6. Between Ld2.6 and 4.6, R reached a steady-state value and remained constant for higher Ld values in agreement with previous observations. Rd measurements were made for mixtures of TNT, RDX, and 50 pentolite with salt and for TNT and RDX with glass beads. For loosely packed TNT in 10-cm-diam charges, Rd decreased linearly with the amount of inert material from about 2.1 pure TNT to 1.3 60 salt. In other cases, no definite variation in Rd with the amount of inert material could be established. However, with density corrections, a decrease in Rd with inert content was indicated for cast TNT and salt, TNT and glass beads, and RDX and salt. For mixtures of RDX and glass beads, and pentolite and salt, Rd appeared to reach a maximum and then decrease with an increasing inert content. The effects of segregation, deceleration of reaction rate, and attenuation of the wave toward the charge axis were believed to contribute to the doubt concerning the trends. See also AD-16378

Subject Categories:

  • Ammunition and Explosives
  • Explosions

Distribution Statement:

APPROVED FOR PUBLIC RELEASE