SUN 143-120. Modification of 2.75 Inches FFAR Stabilizing Rod to Eliminate Erratic Pressure and Thrust Excursions When Static Tested at + 165 Degrees F

Abstract

Through experimental work, a modification of the stabilizing rod in the 2.75 inches FFAR was developed which would eliminate the occurrence of erratic pressure and thrust excursions (NOTS Pips in the static testing of grains at +165 deg F. This modification involved changing the diameter and length of the potassium sulfate on the stabilizing rod. The change from 0.3 to 0.5 inch diameter and from 12.0 to 6.0 inches length completely eliminated the occurrence of NOTS Pips when grains were tested at 180 deg F.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
May 15, 1969
Accession Number
AD0689576

Entities

People

  • T. R. Trout

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Burning Rate
  • Combustion
  • Diameters
  • Engineering
  • Ethyl Cellulose
  • Frequency
  • Geometry
  • High Temperature
  • Photographs
  • Plastics
  • Potassium
  • Propellant Grains
  • Propellants
  • Rocket Engines
  • Standards
  • Static Tests

Readers

  • Control Systems Engineering.
  • Mathematics or Statistics
  • Surface Engineering/Surface Coating Technology.