OP 1664 - U.S. Explosive Ordnance (Vol. 1); Part 2 - Rocket and Rocket Fuzes; Chapter 5 - Primers and Tracers; Section 3 - Some Army Developmental Types: 3.5-inch A/T T80 and Practice T85

U.S. EXPLOSIVE ORDNANCE

PART 2 - ROCKET AND ROCKET FUZES

Chapter 5 - ROCKET BODIES

Section 3 - SOME ARMY DEVELOPMENTAL TYPES

3.5-inch A/T T80 and Practice T85

Over-all length, inches	26.3
Weight of head, pounds	5.11
65/35 Cyclotal charge, pounds	1.82
Length of motor, inches	15.6
Fuzing	T160E1

General: This design is mainly a larger type of the 2.36-inch A/T model, with improve-ments. It has the shaped-charge explosive for penetration. It also has a more efficient propellant and an all-ways-action fuze. Performance tests are still being conducted. It is the largest of the shoulder-fired rockets.

Propellant: There are 12 sticks of powder five inches long and 0.375 inch in diame-ter; total weight, 160 grams. The igniter is conventional.

Figure 120. 3.5-inch A/T Rocket T80