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| Japanese Explosive Ordnance – Bombs, Bomb Fuzes, Land Mines,
Grenades, Firing Devices and Sabotage Devices |
| Chapter 1 – Section 2 |
| Japanese Navy Bombs |
| Type 94 and Experimental Type Modification 1 Float Lights |
| Fuzes: None. |
| Type 94 | Experimental type, Modifiaction 1 |
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| Over-all length | 11 7/16 inches. | 21 3/4 inches. |
| Length of body | 11 7/16 inches. | 21 3/4 inches. |
| Diameter of body | 2 13/16 inches. | 4 3/4 inches. |
| Thickness of wall | 3/64 inch. | 3/64 inch. |
| Material of wall | Tin plate. | Tin plate. |
| Type of suspension | None. | None. |
| Suspension lug | None. | None. |
| Color and markings | Grey. Red pull rings. One paper label. | Chrome yellow. Red pull rings. Two paper labels. |
| Length of tail fins | 2 3/4 inches. | 7 inches. |
| Width of tail | 3 inches. | 5 inches. |
| Width of tail fins | 1 3/8 inches. | 2 3/4 inches. |
| Dimensions of tail struts | None. | 5 inches by 3/8 inch by 1/32 inch. |
| Material of tail | Tin plate. | Tin plate. |
| Type of filling | Calcium carbide and Calcium phosphide. | |
| Weight of filling | Calcium carbide, 0.5 pound. | Calcium carbide, 2.0 pounds. |
| Total weight of bomb | 2.2 pounds. | 6.6 pounds. |
| Charge/weight ratio | 23 percent. | 33 percent. |
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Construction of body: In both types the body is constructed of tin plate rolled into a cylinder with soldered lapped joints. The hemispherical nosepiece and conical tail piece are soldered to the body. The nosepiece houses a lead weight. The calcium carbide is contained in the forward part of the body, the calcium phosphide in the after part. Two metal tear strips cover water inlet holes in the nose and tail. |
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Construction of tail: Four steel fins are soldered to the body and tail cone. There are no struts on type 94. The fins on the experimental type are braced by a single set of box-type struts. |
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Operation: The tear strips are removed before dropping. On impact with the water, the water enters the holes formely covered by the tear strips. Water reacts with calcium phosphide to generate phosphine and calcium carbide to generate acetylene gas. On contact with the air phosphine ignites spontaneously and the resultant flame is fed by the acetylene which acts as the main source of fuel. |
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Figure 80 - Type 94 and Experimental Type Modification 1 Float Lights. |
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