USNBD, Bombs and Fuzes; Section I - High Explosvie Bombs; Part III - U.S. Army-Navy "AN" Series Bombs: 120 lb. M86

U.S.N.B.D. - UNITED STATES - BOMBS AND FUZES; PYROTECHNICS

SECTION I - HIGH EXPLOSIVE BOMBS

PART IV - U.S. ARMY-NAVY "AN" SERIES BOMBS

DATA:		U.S. - ARMY BOMB
		120 LB. PARA-FRAG
DIMESION PF BOMB	Refer Page 67,
	90# frag. M82
PARACHUTE CONTAINER	35.5 in.
LENGTH		M 86
PARACHUTE CONTAINER	6.5 in
DIAM
FUZING	AN-M120 or
	AN-M120A1

DESCRIPTION:

The M86 consists of the 90 lb. fragmentation bomb, M82 and a parachute unit M5 which is screwed to the base of the bomb body in place of the normal tail fin assembly. Both units are issued separately and must be assembled prior to use.

The parachute unit M5 consists of a cylindrical container housing the parachute. The lid of the container is fastened by a latch which is secured by the arming wire.

SUSPENSION:

The bomb can be used in a bomb station having the clearance of a 500 lb. bomb, and may be suspended singly or as a two-bomb cluster with the cluster-adapter M12. One suspension lug is welded to the bomb at the center of gravity and two suspension bands are issued with the parachute unit. The larger diameter band is secured on the parachute unit to be used in conjunction with the suspension lug or the smaller diameter band secured on the bomb body.

OPERATION:

The arming wire, which is fastened to the bomb shackle, passes through the lug of the rear suspension band and the latch on the parachute container but not through the fuze. This secures the latch and prevents the parachute from opening until immediately after release of the bomb. The arming wire which passes through the fuze is fastened to the parachute by the arming cord.

On release, the arming wire is withdrawn from the latch on the container. As the bomb falls, the air stream removes the lid from the container and allows the para-chute to open. The arming cord is attached to the shroud line and is pulled as the parachute opens, thereby permitting the fuze to arm.