Accession Number:

ADA499491

Title:

Blast Mitigation Using Water Mist: Test Series II

Descriptive Note:

Memorandum rept.

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Report Date:

2009-03-12

Pagination or Media Count:

31.0

Abstract:

The effects water mist has on the overpressures produced by the detonation of 50 lb equivalent of high explosives HE TNT, Destex, and PBXN-109 in a chamber is reported. The overpressures for each charge density were measured with and without mist preemptively sprayed into the space. The impulse, initial blast wave, and quasi-static overpressure measured in the blast mitigation experiments were reduced by as much as 40, 36, and 35 for 50 lbs TNT, 43, 25, and 33 for 50 lbs TNT equivalent Destex, and 49, 39, and 41 for 50 lbs TNT equivalent PBXN-109 when water mist was sprayed 60 seconds prior to detonation at a concentration of 70 gm sup3 and droplet Sauter Mean Diameter SMD of 54 micrometer. These results suggest that current water mist technology is a potentially promising concept for the mitigation of overpressure effects produced from the detonation of high explosives.

Subject Categories:

  • Explosions

Distribution Statement:

APPROVED FOR PUBLIC RELEASE