Mk 235 Mod 0 (Nose Mechanical Impact)

Missiles

Fuzes used with

Functioning

Armed condition

Arming data

2,500 to 3,000 feet ai travel

General: Another of the elbow-tpy fuzes, the Mk 235's fuze body is connected by a flexible coupling to the external driving unit. The body part resembles somewhat the Nose Mechanical Impact Fuze AN-M103 with the sliding detonator shutter. However, in this fuze there is only the delay firing train. A snap ring in a groove on the neck of striker holds the striker away from the hammer after the arming screw is out, until it is forced out on impact. When armed, this fuze is extremely sensitive.

Operation: On release, the arming wire pulls out of the external driving unit. Air-flow rotates the vanes, turning the flexible shaft and unscrewing the arming screw. When the arming screw is out of the fuze, the spring-loaded arming shaft rises, allowing the deto-nator slider, pushed by two springs, to move into position under the delay element and above the booster lead-in. A detent then locks the slider in place. On impact, the nose plate and striker are forced in, expanding the snap ring and forcing the firing hammer to drive the firing pin into the delay primer, setting off the delay and explosive train.

Remarks: The detonator has an expansion hole above it in the unarmed position, so that accidental detonation cannot set off the tetryl booster.

Figure 398. Nose Fuze Mk 235 Mod 0, with Driving Unit Attached

Figure 399. Nose Fuze Mk 235 (body position)