USNBD, Bombs and Fuzes; Section I - High Explosvie Bombs; Part III - U.S. Army-Navy "AN" Series Bombs: 1000 lb. AN-Mk 26 Mod 1

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. NAVY MINE
		1000 LB. AIRCRAFT MINE
LENGTH OVERALL
With parachute pack	68.5 in.
Without parachute pack	64.5 in.
DIAMETER		AN-Mk 26 Mod 1
Case	18.625 in.	Ground, Influence Fired
Tail section	15.75 in.	(Serive)
Parachute pack	18.50 in.

WEIGHTS:


Type of Filling	T.N.T.	TORPEX
Weight of Filling	465 lbs.	525 lbs.
Total Weight	1000 lbs.	1060 lbs.
Chg/Wt. Ratio	46.5%	49.5%
Negative Bouyancy	400 lbs.	460 lbs.

FUZING:

For use as Mine:	Athwartship - Mine Mechanisms
Forward well:	Clock Starter and Clock Delay
After well:	Extender and Booster
For use as Bomb:
Nose:	AN-M103, AN-M103A1, M135, M135A1, M136, M136A1, M139, AN-M139A1, M140, M140A1, AN-M140A1, M149, M163, M164, M165, AN-Mk 219 (by using adapter ring and additional Mk I Aux. Booster).

MINE CONSTRUCTION:

The AN-Mk 26-1 consists of a cylindrical steel case with a welded hemispherical nose and tapered tail section. The tail is closed by a concave cover secured with cap screws. A ring for the parachute assembly is welded around the after end of the case. The Tail Parachute Pack, Mk 1, containing Parachute Mk 2, is fitted to the tail when the mine is installed in plane. This parachute, alows fall of the mine thrue the air to lessen shock of water impact, and is released from the case on striking water by an impact release mechanism. Suspension is horizontal, two stan-dard lugs being welded onto the body 14" apart and placed 90° from the side poc-kets. There is a removable British single suspension lug 180° removed.

COLOR & MARKINGS:

Black overall.

REMARKS:

Normal use:	As ground, magnetic induction mine (M-9-1 Search Coil firing me-chanism). Aircraft laid, with parachute (Release altitude - 200 ft. or higher). Laid offensively in depths of water from 15 ft. to 120 ft. against surface craft, and up to 500 ft. against submarines.
	Extender and Clock Starter are functioned by hydrostatic pres-sure at depths of 16 ft. or greater. Clock delay runs off in 170 minutes to arm mine.
Use as Bomb:	This mine is poorly suited for use as a bomb since accurate drop-ping by parachute is difficult; and if parachute is not used, the case tumbles. Fuzes require longer air travel to arm than usual because of the shape of the mine and the manner of fail thru the air.