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| U.S.N.B.D. - ROCKETS AND FUZES |
| ROCKET FUZES |
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ROCKET USED IN |
Mk 44-1: 5.0" Mk 10 head |
U.S. NAVY |
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Mk 44-2: 5.0" Mk 7 head | |
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FUZES FOUND WITH |
Mk 44-1: Mk 30-3 |
Mk 44-1 |
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Mk 44-2: Mk 100 | |
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OVERALL LENGTH |
1.8 in. | |
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DIAMETER |
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Rotor Housing |
1.5 in. |
Auxiliary Detonating Fuze |
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Booster Cup |
1.25 in. | |
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DESCRIPTION: |
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Fuze is constructed in two parts, a rotor housing into the bottom of which is srewed a booster cup. Rotor hosuing contains a double rotor above the other. The upper rotor contains a primer detonator incorporating Lead azide. The lower rotor contains a boos-ter lead-in of Tetryl. In the assembled condition, each rotor is locked by two centrifugal detents so that the firing train is out of line. |
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OPERATION: |
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This fuze is armed by centrifugal force. When the rocket is launched, centrifugal force moves the two detents on each rotor out against their springs. The rotors are then revolved by centrifugal force until their motion is arrested by contact with the stop pin. At that time the firing is in line, with the detonator being immediately above the booster lead-in; the fuze is now armed. When the nose fuze functions, the gas pressure generated force through the weakened part of the closing disc to fire the de-tonator. The firing train is then booster lead-in, booster, main charge. |
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Mk 44 Mod 2: |
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The Mk 44 Mod 2 is the same as the Mk 44 Mod 1 except that the hole in the closing disc over the detonator is drilled completely through and a copper sealing disc, 0.02 inches thick, is placed over the closing disc. |
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