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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 |
1-kg. Practice Bomb Modification 2 and Modification 3 |
Fuzes: A-5 (a). |
Over-all length: 10 1/4 inches. |
Length of body: 2 3/4 inches. |
Diameter of body: 3 inches. |
Thickness of wall: 1/8 inch. |
Material of wall: Steel. |
Type of suspension: Horizontal. |
Suspension lug: A rectangular hinged steel lug on a plate riveted to the body with four rivets. |
Color and markings: White rubber nose, black body, white tail cone and fins. Brass band just aft of rubber nose. |
Length of tail: 7 1/2 inches. |
Width of tail fins: 1 1/4 inches. |
Width of tail: 3 1/2 inches. |
Dimensions of tail struts: None. |
Material of tail: Sheet metal. |
Type of filling: Picric burster and a red or white phosphorus main charge. |
Weight of filling: 3 ounces (approximately). |
Total weight of bomb: 2 pounds 3 ounces. |
Charge/weight ratio: 9 percent. |
Construction of body: A hemispherical rubber nosepiece is attached by screws to the forward end of the nose-piece, cast-iron body. The bomb fuze is contained in the nose and body. A burster charge is attached to the after end of the fuze and extends into the tail cone which is held to the bomb body by five screws. The burster charge is surroun-ded by cotton wadding which is contained in a central tube. The remaining space in the tail cone is filled with red or white phosphorus. A safety plunger is depressed when the bomb is loaded in the bomb rack. A screw type safety pin is removed when the bomb is in the bomb rack. |
Construction of tail: Four fins are welded to the sheet metal tail cone. There are no tail struts. |
Figure 71 - 1-kg. Practice Bomb Modifiaction 2 and Modification 3. |
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