Description
The Base Fuze Mk 159 is similar to the Mk 157, except that the delay time has been changed to 0.015 second. The fuze is used in the base of the 5.0-inch Rocket (5.0-inch Motor—Heads Mks 5 and 6). Other minor structural changes have been made as follows: (1) a slightly heavier shear wire is used; (2) the inlet screen and inlet washer have been replaced by a brass washer having one side flat and the other radially serrated (the radially serrated side faces the fuze head, so that the motor gases can enter the fuze diaphragm chamber); (3) the number of external threads on the body has been increased and "run out’’ just below the flange to afford a snug fit for the sealing washer, and (4) the fuze has been completely waterproofed. The Base Fuze Mk 159 is shipped to the field installed in the base of the rocket head.
Functioning
No information about functioning.
Hazardous Components
No information about hazardous components.
See Also
Source(s)
OP 1664, Volume 1 - US Explosive Ordnance (1947)
