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ALLIED BOMBS AND FUZES |
| PART II - U.S. BOMB FUZES |
| A. ARMY FUZES |
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FUZE DATA |
FILE NO.: |
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NATIONALY: U.S. Army-Navy |
INFORMATION DATE: Sept. 1943 |
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DESIGNATION: |
AN-M 115, 116, 177 |
PRINCIPLE MARKING: |
AN-M 115, |
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AN-M 116, AN-M 117 |
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CLASSIFICATION: |
Mechanical |
SPECIAL MISSION: |
Masthead |
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Impact - Tail Fuze |
bombing from carriers. |
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MARKINGS: |
AN-M 115 |
BOMBS USED IN: |
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AN-M 116 |
AN-M 115 - 100, 250, 300 lb. |
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AN-M 117 |
AN-M 116 - 500, 600 lb. |
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AN-M 117 - 1000, 2000 lb. |
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DATA |
AN-M 115 |
AN-M 116 |
AN-M 117 |
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1 |
COLOR |
Unpainted Metal |
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2 |
OVERALL LENGTH |
10.0 in. |
12.0 in. |
16.0 in. |
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3 |
OVERALL WIDTH |
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BODY |
2.3 inches |
2.3 inches |
2.3 inches |
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4 |
MATERIAL OF CONSTRUCTION |
Cadmium Plated Steel |
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5 |
PARTS |
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| (1) | Vane Nut | (7) | Keyway | |
| (2) | Arming Vanes | (8) | Key | |
| (3) | Vane Carrier | (9) | Inertia Sleeve | |
| (4) | Gear Reduction System | (10) | Firing Pin Spring | |
| (Idler Gear) | (11) | Firing Pin | ||
| (Moveable Gear) | (12) | Firing Pin Locking Balls | ||
| (Stationary Gear) | (13) | Creep Spring | ||
| (5) | Arming Stem | (14) | M-16 Primer Detonator | |
| (6) | Tube | |||
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6 |
DIFFERENCE BETWEEN M-112, |
The AN-M 115, AN-M 116, AN-M 117 are the same fuzes as the M-112, M-113, and M-114, respectively, except the former incorporate the same gear reduction system as the AN-M 100A2 series. |
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7 |
POSITION AND METHOD OF FIXING IN BOMB |
Screwed into base plate of bomb hand tight. |
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8 |
FUZE LIKELY TO BE FOUND WITH |
Used with the M-119 only in carrier based planes (M-119 is not perfected as yet). Can be used with M-118 in land ba- ses plane. |
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9 |
ARMING TIME |
150-170 revolutions of vanes – 400-650' air travel. 650' ac-complished at 130' altitudie at 150 knots, or at 80' at 200 knots. |
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10 |
FUNCTIONING TIME |
A selective functioning time of 4-5 seconds of 8-11 se-conds is provided with each fuze by shipping two M-16 Pri- mer Detonators, one with each of these delays. |
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11 |
COMPONENTS OF EXPLOSIVE TRAIN |
Primer, compression chamber, igniter charges (2) relay, de- lay, upper detonator and lower detonator. |
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12 |
OPERATION |
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The operation of these fuze is the same as the M-112, M-113, M-114 except is incorporates the gear reduction system of the AN-M 100A2 series which requires 150-170 revolutions of the vanes. |
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