Accession Number:

ADA099616

Title:

The Transonic Flow Field for a Fluidic-Generator Fuze Assembly.

Descriptive Note:

Contractor rept.,

Corporate Author:

TEXAS UNIV AT AUSTIN DEPT OF AEROSPACE ENGINEERING AND ENGINEERING MECHANICS

Report Date:

1981-05-01

Pagination or Media Count:

62.0

Abstract:

An experimental program has been conducted to evaluate the performance of the fluidic-generator fuze assembly of the Armys Multi-Launch Rocket System MLRS in the transonic speed range. Static-pressure measurements and Pitot-pressure measurements were obtained for different nose configurations during a test program which was conducted in the Aerodynamic Wind Tunnel at the Arnold Engineering Development Center. The test conditions included free-stream Mach numbers from 0.95 to 1.3 over a range of free-stream densities simulating altitudes from 15,240 m to 21,030 m. The pressure data from these tests have been analyzed to describe the internal and the external flow fields. The pressures measured at the inlet hole for the fluidic-generator assembly is in close agreement with that given by the normal shock relations. The experimentally determined pressure ratio pp sub t2 decreased as the free-stream Mach number increased for all external orifices from x 0.030 x sub 0 to 1.000 x sub 0. These Mach-number variations were gradual and consistent. Since flow through the fluidic-generator assembly is choked by the nozzle centerbody, the mass-flow rate can be correlated in terms of the external flow conditions.

Subject Categories:

  • Fluidics and Fluerics
  • Ammunition and Explosives

Distribution Statement:

APPROVED FOR PUBLIC RELEASE