1,000-pound Aircraft Mine AN-Mk 26 Mod 1 (Ground, Influence-Fired)

Over-all length, inches

With parachute pack

Without parachute pack

Diameter, inches

Case

Tail section

Parachute pack

Filling

Weight of filling

Total weight

Charge/weight ratio

Negative buoyancy

400#

460#

Fuzing

For use as a mine - Athwartship - (Mine Mechanisms: forward well, clock starter and clock delay; after well, extender and booster).

For use as a bomb - Nose - AN-M103, AN-M103A1, M135A1, M136, M136A1, M139, M139A1, AN-M139A1, M140, M140A1, AN-M140A1, M149, M163, M164, M165, AN-Mk 219 (with adapter ring and one additional Auxiliary Booster Mk 1).

Construction: The 1,000-pound Aircraft Mine AN-Mk 26 Mod 1 consists of a cylindri-cal steel case welded with hemispherical nose and tapered tail section. The tail is closed by a concave cover secured with cap screws. A ring for mounting the parachute ass-embly is welded around the after end of the case. The Tail Parachute Pack Mk 1, con-taining Parachute Mk 2, is fitted to the tail when the mine is installed in plane. This para-chute slows the fall of the mine through the air to lessen the shock of water impact, and is released from the case on striking water by an impact release mechanism. Suspension is horizontal, two standard lugs being welded onto the body 14 inches apart and placed 90° from the side pockets. There us a removable British single-suspension lug 180° remo-ved.

Color: Black over all.

Remarks

Normal use - As ground, magnetic induction mine (Search Coil Firing Mechanism M-9-1). Aircraft-laid, with parachute (release altitude - 200 feet or higher). Laid offensively in depths of water from 16 feet to 120 feet against surface craft, and up to 500 feet against submarines. Extender and clock starter are caused to function by hydrostatic pressure at depths of 16 feet or greater. Clock delay runs off in 170 minutes to arm the mine.

Use as bomb - This mine is poorly suited for use as a bomb, since accurate dropping by parachute is difficult; and if parachute is not used, the case tumbles. Fuzes require lon-ger air travel to arm than usual, because of the shape of the mine and the manner of fall through the air.

Figure 292. 1,000-pound Aircraft Mine AN-Mk 26 Mod 1