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| U.S. EXPLOSIVE ORDNANCE |
| PART 6 - BOMBS AND BOMB FUZES |
| Chapter 20 - BOMB FUZES |
| Section 2 - ARMY-DESIGNED BOMB FUZES |
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M115, M116, and M117 (Tail Mechanical Impact) |
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Bombs |
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M112A1 |
100-lb. G.P. AN-M30 250-lb. G.P. AN-M57 |
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M113A1 |
500-lb. G.P. AN-M43, 64 500-lb. S.A.P. AN-M58 600-lb. G.P. M32 |
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M114A1 |
1,000-lb. G.P. AN-M44, 65 1,000-lb. S.A.P. AN-M58 1,100-lb. G.P. M33 2,000-lb. G.P. AN-M34, 66 2,000-lb. S.A.P. M103 |
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Functioning |
Primer Detonators M16: 4 - 5, 8 - 15 seconds delay Primer Detonator M16A1: 4 - 5, 8- 11 seconds delay |
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Armed condition |
When gear carrier stop protrudes less than 1 inch below vane cup |
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Fuzed used with |
None |
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Arming data |
Same as AN-M100A2, AN-M101A2, AN-M102A2 respecti-vely |
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Vane span, inches |
5 |
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Body diameter, inches |
1.5 |
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Over-all length, inches |
M115 - 9.6 M116 - 12.6 M117 - 16.6 |
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Material |
Cadmium-plated steel |
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General: This series is for ship and masthead bombing by land- or carrier-bases pla-nes. The only difference between these fuzes is in the length of the arming stem. Larger bombs require a longer arming stem, so that the vanes can catch the air slip from the bomb. The only difference between these three fuzes and the M112A1 series is that this series employs the reduction gears as used in the AN-M100A2 series, consequently hav-ing a longer arming time. Actually, the M115 series is a composite of the M112 series body with the AN-M100A2 series vane and reduction-gear assembly. |
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Remarks: These fuzes will take either the Primer Detonator M16 with delays of 4 to 5 or 8 to 11 seconds, the Primer Detonators M16A1 with delays of 4 to 5 or 8 to 15 se-conds. Actually the M16's are no longer being manufactured, though they are still to be used for skip or masthead bombing from land or carrier bases. These fuzes may have a groove around the top of the fuze, or the top may be straight as in the AN-M100 series. The groove is a distinguishing mark used by manufacturers making both fuzes, and is not to be considered a positive sign for fuze identifiaction. |
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Never turn the vanes counterclockwise to render the fuze safe, as the arming stem may depress the plunger instead of engaging it. |
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