Description
This fuze is of the delay, chemical-electrical, handset type, containing a spring-loaded striker with a chemical action release. It outwardly resembles the ChMV-10 and ChMV-16 clockwork fuzes. It consists of a bakelite case with a threaded cap and measures 6 1/2 inches in height and 2 1/2 inches in diameter. An MD-2 detonator assembly is normally used and is screwed into the base of the fuze. The case houses a 1.4-volt dry cell battery, a copper capsule filled with a copper sulfate solution, and a spring-loaded striker held by a copper striker-retaining wire. The retaining wire is insulated from the copper capsule which it passes through the connects to one of the battery terminals. The other battery terminal is wired to one of the arming terminals. The other arming terminal is wired to the copper capsule. A resistance coil is inserted between the two arming terminals and is marked with two numbers. The upper number indicates the delay in clays and the lower number, the delay in hours. This fuze has a maximum life of about 6 months limited by the life of the dry-cell battery. It is effective in a temperature range of from -4 to +140 degrees Fahrenheit.
This fuze is used for delayed detonation of mines and charges.
Functioning
The circuit is closed when the resistance coil is inserted between the arming terminals. The copper capsule acts as an anode, the copper striker-retaining wire as a cathode, and the copper sulfate solution as an electrolyte. Electrolysis begins and corrodes the copper wire, releasing the spring-loaded striker against the percussion cap. The resistance coil determines the amount of current or amperage which, in turn, governs the time (between 12 hours and 120 days) it takes for electrolysis to corrode the copper wire.
This fuze may also be fitted with an electric contact plug which screws in the base instead of an MD-2 detonator assembly, like that shown in the figure for the ChMV-16 delay fuze.
Hazardous Components
No information about hazardous components.
Physical Data
No additional physical data available.
See Also
Landmine, Delayed Action, MZD-1
Landmine, Delayed Action, MZD-2
Source(s)
