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US Rocket Warhead, 2.75 inch HE, M229

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To provide improved aerial artillery capability for the 2.75 inch rocket.

This rocket is an air-to-ground rocket primarily deployed from rotary-wing and other low-speed aircraft. It is also used on Air Force and Navy jet aircraft in ripple fire mode.

This rocket is used to enhance the lethality and destructiveness of the 2.75 inch rocket in its aerial artillery role. It uses the M229 warhead which is an elongated version of the M151 warhead and is commonly referred to as the 17 pound warhead.

It consists of three main parts consisting of the nose, body, and base. The three main parts are welded together. There is an alternate two-piece design consisting of a one-piece nose body plus a base.

Fuzes assembled with 2.75-inch rockets are classified as point detonating (PD) or proximity, according to the manner in which they are initiated. Except for the Proximity Fuze M429, these fuzes are nondelay and super-quick (SQ). The PD fuzes and proximity fuze are threaded into the forward end of the high explosive warhead.

The M229 warhead is available with fuzes M423, M427, and M429. These fuzes differ from each other functionally and have the following characteristics:

M423 and M427 - Oblique impact sensitive, point-detonating, super-quick type fuze.

M429 - Transistorized doppler type proximity fuze with a super-quick impact switch as a backup.

Hazardous Components

No information about hazardous components.

See Also

PD, M423, M427

Proximity, M429

Rocket Motor, 2.75 inch FFAR, Mk 40

Rocket Warhead, 2.75 inch HE Frag, M151


Collaborative ORDnance data repository (CORD)

TM 43-0001-30, Rockets (chg 14, 2001)