MICROSCOPIC AND MICROCHEMICAL STUDY OF AGED SOLID PROPELLANT GRAINS.
Abstract
Microscopic and chemical analyses of aged model propellant grains and of aged field propellants were continued. A new set of model igniter grains were prepared and their aging begun. These grains differed in FeAA and plasticizer content from grains prepared earlier, so that the effects of composition might be assessed. A mapping of the colored reaction site distribution in the model igniter grains aged 9 months was done. The model grains indicate a maximum concentration in the booster near the booster-sustainer interface. The relative volume concentrations of refractive sites obtained earlier have been converted to absolute volumes. Chemical analyses of 5-1/2 year old Hawk propellant for iron and plasticizer have been accomplished. The results indicate that considerable IDP and TOP migrate across the propellant interface. This migration carries with it iron compounds. It was also shown that the FeAA is converted to ferric and ferrous compounds. The ferrous compounds are found only when aluminum is present. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1967
- Accession Number
- AD0822647
Entities
People
- Anthony J. Dimilo
- James L. Mcgurk
Organizations
- Aerojet Rocketdyne Holdings