Accession Number:

ADA164227

Title:

Technical Notes on Orifice Tests.

Descriptive Note:

Final rept.,

Corporate Author:

GENERAL ELECTRIC CO PITTSFIELD MA ORDNANCE SYSTEMS DIV

Personal Author(s):

Report Date:

1986-01-01

Pagination or Media Count:

72.0

Abstract:

The purpose of this task was to study the high speed flow of monopropellant through orifices in order to develop criteria for safe and efficient designs. Flow tests were conducted in a clear plastic, low pressure fixture and firing tests in a specially designed steel fixture. The initial injector studied was known to behave poorly in regenerative gun fixture firings. The flow tests revealed that it was subject to flow separation. The steel fixture tests with this injector exhibited strong evidence for flameholding inside the injector. Steel fixture firing tests were also performed on straight-through hole injectors. These showed evidence of flameholding in the orifice. The basic goal of this effort was not met. It is believed that neither the basic designs of the steel test fixture nor the instrumentation used were adequate for this task. Although no quantitative data was generated, a number of useful qualitative design guidelines were obtained.

Subject Categories:

  • Ammunition and Explosives
  • Fluid Mechanics
  • Liquid Rocket Propellants

Distribution Statement:

APPROVED FOR PUBLIC RELEASE