Accession Number:

AD0260393

Title:

FINITE-DIFFERENCE SOLUTION OF AXISYMMETRIC ELASTIC STRESS STATE IN SOLID PROPELLANT FOR TWO LOADING CONDITIONS

Descriptive Note:

Corporate Author:

TRW SPACE TECHNOLOGY LABS LOS ANGELES CALIF

Personal Author(s):

Report Date:

1961-05-01

Pagination or Media Count:

1.0

Abstract:

The axisymmetric stress state which may occur in the solid propellant of rockets, prior to the period of firing, has been investigated by the application of an elastic, finite-difference analysis to a simplified configuration of the propellant. Two loading conditions, 1 differential expansion of the propellant and case and 2 gravitational forces acting on the propellant, are considered. The results indicate that the first loading condition produces a stress state in which there is a rapid increase in the shear stress along the interface, toward the open end of the propellant. The maximum shear stress produced by the second loading condition is essentially equal to that given by the approximate solution of Seide Stresses in Solid Rocket Propellants, Due to High Accelerations. RamoWooldridge Corp. Memo, RW-66-126, 1955. With propellantlength ratios much shorter than that of the present problem, the results most likely would be modified. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE