Measuring in-situ MDF velocity of detonation

Details Measuring in-situ MDF velocity of detonation Measuring in-situ MDF velocity of detonation

2005-10-25

2005-10-25

Chapman, John E. (Department: 2856)

Measuring and testing

Explosive

By time measurement

Reexamination Certificate

active

06957566

ABSTRACT:
A system for determining the velocity of detonation of a mild detonation fuse mounted on the surface of a device includes placing the device in a predetermined position with respect to an apparatus that carries a couple of sensors that sense the passage of a detonation wave at first and second spaced locations along the fuse. The sensors operate a timer and the time and distance between the locations is used to determine the velocity of detonation. The sensors are preferably electrical contacts that are held spaced from but close to the fuse such that expansion of the fuse caused by detonation causes the fuse to touch the contact, causing an electrical signal to actuate the timer.

REFERENCES:
patent: 3670559 (1972-06-01), Bement
patent: 4379401 (1983-04-01), San Miguel
patent: 5147975 (1992-09-01), Munach et al.
patent: 6561101 (2003-05-01), Smith

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