Abstract: The time-to-go of the fuze of an artillery shell is digitally set after the round has been fired but before it leaves the muzzle of the gun. The communications link for setting the fuze includes a transmitting coil mounted on the gun muzzle and a receiving coil mounted on each shell round. The transmitting coil is energized with a plurality of signals on discrete frequencies. The output from the receiving coil is detected to derive one binary digit representing each discrete frequency. All the binary digits, "0" or "1", are simultaneously set into a binary counter in the fuze, so that the binary number represents the time-to-go.
Abstract: A load power supply is connected to the load device through a gated switch nd time-delay fuse. The maximum current pulse delivered by the power supply is limited by the "delayed blow" characteristics of the fuse inserted in the circuit. After a selected current-time duration is delivered to the load, the fuse "blows" (opens) and the circuit is effectively de-energized.
Type:
Grant
Filed:
September 16, 1976
Date of Patent:
August 29, 1978
Assignee:
The United States of America as represented by the Secretary of the Army
Abstract: A mechanical stop for precluding the rotation of a setting ring beyond predetermined limits of a plurality of turns in the clockwise and counter-clockwise directions. The setting ring is adapted to drive the tape of a tape reader in the range setting mechanism of an electronic fuze for ordnance.