The construction and operation of Rocket fuzes is characterized by the service in which they are used: Army or Navy; by the type of rocket in which they are used: fin stabilized or spin stabilized; and by the position in which they are used: nose or base.

Navy Fin Stabilized Rocket Fuzes:

The Navy fuzes for use in the nose of fin-stabilized rockets, other than anti-subma-rine shipboard rockets (and projector charge ammunition), are air arming and impact (or impulse, VT) firing. Anti-submarine shipboard rocket fuzes are designed to arm because of hydrostatic pressure or travel through the water and to fire on impact with the sub-merged target.

The base fuzes are armed by the pressure of gases from the burning motor and fired by impact with the target.

Navy Spin Stabilized Rocket Fuzes:

The Navy fuzes for use in the nose of base of spin stabilized rockets are armed by centrifugal force and fire on impact.

The rocket fuzes have a common safety factor; viz, an interrupted firing train. The fuzes (nose and base) currently produced for rockets fired from aircraft, utilize the acceleration of the rocket to obtain a positive delay in arming the termination of the burning of the rocket motor.

Only four Army fuzes are considered in this section since the fuzes in the 2.36" rockets are intergral with the motor.