Accession Number:

AD0263469

Title:

INVESTIGATION OF THE STRUCTURAL INTEGRITY OF 37.5-IN.-DIA SUBSCALE MINUTEMAN CHAMBERS OF LADISH D-6AC STEEL

Descriptive Note:

Corporate Author:

AEROJET-GENERAL CORP SACRAMENTO CALIF

Personal Author(s):

Report Date:

1961-09-20

Pagination or Media Count:

1.0

Abstract:

A subscale 37.5-in.-diam Minuteman chamber fabricated of Ladish D-6ac steel was subjected to a series of tests to demonstrate the structural integrity of the case and to obtain data applicable to the second-stage Minuteman engine case. The magnitude and direction of stresses in theAFT CLOSURE AND CHAMBER WERE DETERMINED, AN INVESTIGATION WAS MADE OF CHAMBER DEFLECTION, BLAST TUBE ROTATION ABOUT THE LONGITUDINAL AXIS OF THE CHAMBER, AND CHAMBER EXPANSION UNDER AMBIENT TEMPERATURE AND AN INTERNAL PRESSURE OF 600 PSI. Stresses in the forward closure were determined, and tests were made to determine the magnitude and direction of the principal strains at ambient and elevated temperatures as pressure was gradually increased until the chamber burst. Data obtained in the test series, together with measurements of wall thickness and radii of curvature, indicate that Ladish D-6ac steel chambers of this design are structurally sound. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE