Process for assessing the effect of propellant strain on propell

Details Process for assessing the effect of propellant strain on propell Process for assessing the effect of propellant strain on propell

1987-10-13

1989-03-28

Chapman, John

Measuring and testing

Engine detonation

Combustion signal compared to reference signal varied by a...

73116, G01N 3322

Patent

active

048153150

ABSTRACT:
The present invention describes a process for relating burn rate in a sample propellant to a strain field imposed therein by bending the sample propellant by a determined amount. The propellant is cast upon an initially flat plate having a single pair of fixed parallel walls. The plate is bent parallel to the walls before the test burn. Measurements of the thickness of the propellant before the burn and after the burn are related to the strain placed in the propellant by the bending. All measurements occur when the plate is flat.

REFERENCES:
patent: 4409821 (1983-10-01), Battles et al.
patent: 4554823 (1985-11-01), Lilley

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