Type 3 No. 6 Target Marker Bomb2-kg. Window Bomb
Japanese Explosive Ordnance – Bombs, Bomb Fuzes, Land Mines, Grenades, Firing Devices
and Sabotage Devices
Chapter 1 – Section 2
Japanese Navy Bombs
Type 2 2-kg. Target Indicator

Fuzes: None.

Over-all length: 17 inches.

Length of body: 11 3/16 inches.

Diameter of body: 3 inches.

Thickness of wall: 3/16 inches.

Material of wall: Bakelite.

Type of suspension: Horizontal.

Suspension lug: A steel suspension ring is attached to a steel band by a soldered tin strip. The steel band fits tightly around the bomb body.

Color and markings: Black body and tail. No other color or markings present.

Length of tail: 4 7/8 inches.

Width of tail: 5 inches.

Width of tail fins: 1 9/16 inches.

Dimensions of tail struts: Length 3 1/8 inches; width 7/16 inch.

Material of tail: Sheet tin.

Type of filling: F.M. (titanium tetrachloride).

Weight of filling: 1 pound 7 3/4 ounces.

Total weight of bomb: 3 pounds 14 ounces.

Charge/weight ratio: 37 percent.

Construction of body: The bomb body is of molded bakelite construction with an open-ing in the after end only. This opening is threaded to receive a bakelite stopper, the union being sealed by a black rubber washer. The stopper is threaded internally to recei-ve a bakelite tube which extends nearly the complete length of the bomb body. The after end of the stopper is a slightly tapered tube and a rubber tube is cemented over it. Cemented into the after end of the rubber tube is a glass tube through which the bomb is filled. When the bomb is approximately two-thirds filled with liquid F.M. the glass tube is heated and sealed off. A small wire is attached to the glass tube at the point of seal-ing. Each of the cemented unions is reinforced with a wire wrapping.

A ballistic cap is glued to the nose of the bomb. The cap is made of heavy paper and is filled with fine iron fillings to make the bomb nose heavy.

Construction of tail: The tail fins are made of sheet tin. Pairs of adjacent fins are stam-ped from the same piece of metail and soldered to the forward end after circular struts. The edges of the fins are strengthened by having a one-eigth (1/8) inch turn-back. The after circular strut (width, 1 inch; diameter, 1 7/8 inches) is similarly strengthened. The forward circular strut (with, 9/16 inch; diameter 1 1/16 inches) is of lighter gage tin and is secured to the fins by soldering except for on free end which is secured by a bolt and nut after the fins are as-sembled to the bomb. To insure positive seating of the fins, a rubber insert ex-tends half way around the inside of the forward circular strut. A single set of box-type struts (length, 3 1/8 inches; width, 7/16 inch) is located at the after ex-tremities of the fins.

Operation: The bomb is released from the plane and the case fractures on contact with the target. The smoke mixture is dispersed.

Figure 86 - Type 2 2-kg. Target Indicator.

Type 3 No. 6 Target Marker Bomb2-kg. Window Bomb