Solid propellant service life analysis via nondestructive testin

Details Solid propellant service life analysis via nondestructive testin Solid propellant service life analysis via nondestructive testin

1989-12-28

1991-08-06

Lall, Parshotam S.

Boots, shoes, and leggings

364496, 36457103, 1491088, 73760, 60253, G01M 700, D03D 2300, G01B 530, F02K 900

Patent

active

050382950

ABSTRACT:
A process for determining the aging characteristics of solid rocket propellant samples by measuring their dynamic mechanical properties is disclosed. Samples of rocket propellant are tested using a mechanical spectrometer at low strain levels and low frequencies. Since the dynamic storage modulus of a sample increases with aging time and aging temperature, it is an indicator of the acceptability of the propellant sample as a usable fuel source. The process allows a user to determine empirically the aging rate of a sample for each aging temperature with a nondestructive test procedure.

REFERENCES:
patent: 4074563 (1978-02-01), Briar et al.
patent: 4090893 (1978-05-01), Cucksee et al.
patent: 4167428 (1979-09-01), Sayles
patent: 4170875 (1979-10-01), Edwards

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