Patent ID: 6957566
Filing Date: 2005-10-25
Classification: G01N

Abstract:
1. A method of determining velocity of detonation of a metal-clad explosive fuze that expands in diameter as it detonates along its length, comprising: placing a sensor spaced from and adjacent a first location on the fuze; placing a second sensor spaced from and adjacent a second location on the fuze; igniting the fuze at a third location on the fuze, wherein the fuze detonates along its length past the first and second locations, the expanded fuze being detected by each sensor as the fuze detonates at that sensor's location; and determining the velocity of detonation from the time difference between the actuation of each sensor; wherein the sensors are mounted on an apparatus and the fuze is in a groove on a device, wherein the placing steps comprise: holding the apparatus against the device in a fixed position with the first and second sensors vertically aligned with the respective first and second locations; moving each sensor toward the fuze until it contacts the fuze; and moving each sensor to a sensing position that does not contact the fuze before detonation, and that will be contacted by the detonated fuze.