7.2-inch D.R., also T37 and T88

Over-all length, inches

Motor diameter, inches

C-2 explosive, pounds

Loaded weight, pounds

Maximum range, yards

Motor

Fuze

Head Mk 5

Head Mk 10

Head Mk 10-1

Base - Mk 161 Mod 0

General: The 7.2-inch D.R., a modification of the 7.2-inch H.E., was used for demoli-tion of anti-tank obstacles. The 7.2-inch D.R. was projected from a multiple-rail armored launcher mounted on the turret of the Tank M4. It was fired at point-blank range and proved effective against concrete obstacles at ranges of 100 to 150 feet.

Description: The rocket has a thin steel head to give the maximum blast effect. The propellant is the single unperforated cruciform Grain Mk 10. The body can be fitted with any one of a number of rocket motors to give velocities from 175 to 400 ft./sec. The mean lateral deviation is 10 mils from a 90-inch launcer.

The Base Fuzes Mk 146 and Mk 161 Mod 0 are armed during flight by the pressure of the gas evolved from the burning propellant acting on the diaphragm. The Head Mk 10 Mod 1 is the Head Mk 10, slightly altered to accommodate the new motor adapter of the Base Fuze Mk 161 Mod 0

Remarks: The Army designates the Head Mk 10 or Mk 10 Mod 1 as the T37.

A smoke filled round used by the Army is the same size, and hat the designation of T88. It is nose-fuzed with either the Fuze Mk 152 or the Fuze Mk 141.

The Head Mk 5 may take either the Booster Mk 1 or the Booster Mk 2; the Head Mk 10, only the Booster Mk 1.

The Heads Mk 5 are loaded with TNT; the Heads Mk 10 may also take a TNT load.

Figure 136. 7.2-inch D.R. (Head Mk 5)

Figure 137. 7.2-inch D.R. (Head Mk 10)