Accession Number:

ADA171050

Title:

Development of Instrumentation to Measure Sound Speed and Flow Direction in Dusty Flow Fields.

Descriptive Note:

Technical rept. 1 Oct 84-30 Sep 85,

Corporate Author:

NTS ENGINEERING LONG BEACH CA

Personal Author(s):

Report Date:

1985-11-11

Pagination or Media Count:

106.0

Abstract:

To support the simulation effort associated with the evaluation of the Hardened Mobile Launcher basing concept, a flow-field instrumentation development program has been undertaken. Specific items targeted for investigation were dusty gas sound speed and flow orientation within a simulated precursed flow regime. The investigation has included laboratory tests in a small shock tube facility as well as field testing in the MINI SCALE 2 high explosive simulation event. Evaluation of the ultrasonic system has indicated that the use of such a system for monitoring dusty gas sound speed during a high explosive test is achievable. Results from a prototype flow direction gate using a spherical drag body correlated well with pressure records and precursor flow structure observed during high explosive simulation. Recommendations are made for further investigative efforts regarding flow direction measurement. Such measurments allow a means to aid in the evaluation of models, blast-wing measurement devices and quality of the simulator.

Subject Categories:

  • Nuclear Instrumentation
  • Acoustics
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE