ROCKETS USED IN

FUNCTIONING

FUZES USED WITH

DELAY TO ARM

MAX. BODY DIAMETER

OVERALL LENGTH

7.5 in.

GENERAL:

The T5 and T6 are of the electro-magnetic type and are similar in outward apper-ance; they differ in their application, delay time to arm, and self destructive action. The T5 is installed in aircraft rockets for plane to plane, plane to ground, and plane to water use; the T6 is installed for ground to ground use. The T5 has a 1-second delay in arming and has a self destruction feature which acts 6 - 12 seconds after launching. The T6 has a 3-second delay in arming and does not have a self destruction feature.

The T5 and T6 screw directly into all standard loaded 4.5" Army rockets and are di-rectly interchangeable with P.D. M4 series rocket fuzes both physically and ballistically.

DESCRIPTION:

The fuzes as issued are not complete. A battery must be installed and the compo-nents assembled prior to use. The four major components are the nose, battery, switch, and booster housing.

NOSE MC-382 ( ):

The nose model number may be followed by the manufacturer's code letter in paren-thesis. Noses MC-382 ( ) with the letters A, B, C, D, and E are interchangeable. The nose unit contains the basic electric equipment which initiates the air burst by influ-ence of the target. It is completely sealed and requires no adjustment.

When issued for the T5 fuze, the nose contains equipment for self destruction ac-tion 6 - 12 seconds after launching. In this instance the electrical element is short cir-cuited by a clip across #1 and #3 contact pins which protrude from the base of the nose.

Externally the nose has a plastic ogive with a metallic cap. The shoulder is provided with four slots for the fuze wrench. The base of the nose has two sets of threads, the smaller diameter threads being for assembly to the booster hosuing, and the larger dia-meter threads for assembly to the rocket. Seven electrical contact pins project from the base for connection to the battery. A red guide mark and groove provide a means for proper aligment and assembly in daylight and also at night.

BATTERY BA-75:

The battery unit provides the power supply for operation of the fuze. It is encased in a black bakelite cylinder. Externally the top plate is marked "AMP" and provides a 7-pin socket to receive the nose pins. The bottom plate the tan fiber contains a 6-pin socket to receive the switch pin. This plate has a notch for proper assembly to the switch in the dark. Decalomania is fixed to the side of the unit giving battery identifica-tion, a red guide strip for aligment with the nose and a green guide strip for aligment with the switch.

SWITCH SW230A or SW230C:

(Note: Either of these switches may have a 1 sec. or a 5 sec. delay. The 1 sec. de-ay switch is shipped with the T5 while the 5 sec. delay switch is shipped with the T6.)

The switch unit contains mechanical and electrical devices necessary to arm the fuze, an electrical detonator and a firing train interrupter for safety during handling and launching. Externally the unit has contact pins on top for assembly to the battery. A fiber terminal disc supports the contact pins. A top plate and safety key must be remo-ved before assembly in accordance with instructions on the plate or attached to the key. A bakelite plug at the center of the fiber disc holds the electric detonator in place. The metallic case forms a sturdy protector for the enclosed mechanism and explosive. A green guide mark and groove are located on the side of the switch to assist in align-ing switch pins and battery. The bottom plate contains a small tetryl pellet for deto-nating the booster charge.

BOOSTER HOUSING M-381:

The booster housing forms a case for the battery and switch. This unit screws onto the lower threads of nose MC 382 ( ). In the bottom of this housing is a chamber con-taining a tetryl booster charge.