AN APPARATUS FOR MEASURING THE BULK MODULUS OF SOLID PROPELLANTS
Abstract
An apparatus has been developed to measure the equilibrium bulk modulus of solid propellants and other viscoelastic materials at pressures between 0 and 2500 psig. Hydrostatic pressure is applied to a test sample in the high-pressure chamber of a pressure intensifier. Measurement of the volume displaced by the low-pressure end of the double piston provides high sensitivity in the measurement of the volume change in the high-pressure chamber. The measured isothermal modulus is sufficiently accurate for use in quasi-static stress analysis of solid-propellant rockets. In addition, the adiabatic bulk modulus can be estimated from pressure-volume-temperature data. Small voids in a propellant are vividly shown by a very fast initial rise in the curve of pressure vs. volume change. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1962
- Accession Number
- AD0277901
Entities
People
- Neal C. Wogsland
Organizations
- Ballistic Research Laboratory