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| U.S.N.B.D. - UNITED STATES - BOMBS AND FUZES; PYROTECHNICS |
| SECTION I - HIGH EXPLOSIVE BOMBS |
| PART III - U.S. NAVY "MK" SERIES BOMBS |
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DATA: |
Mk I |
Mk IV |
U.S. NAVY BOMBS |
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Mods 2-3 | Mods 1-4 |
100 LB. G.P. |
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OVERALL LENGTH |
48.8 in. | 36.2 in. | |
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BODY LENGTH |
28.0 in. | ||
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BODY DIAMETER |
7.9 in. | 8.0 in. | |
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WALL THICKNESS |
0.175 in. | ||
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TAIL LENGTH |
21.0 in. | 9.1 in. |
Mk 1 and Mods |
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TAIL WIDTH |
9.8 in. | 11.0 in. |
Mk 4 and Mods |
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TAIL WEIGHT |
(Obsoletescent) |
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WEIGHTS: |
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Type of Filling |
Mk I: T.N.T. | Mk 4: T.N.T. |
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Weight of Filling |
Mk I: 65 lbs. | Mk 4: 55 lbs. |
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Total Weight |
Mk I: 116 lbs. |
Mk 4: 120 lbs. Mod 1; 105 lbs. Mod 4 |
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Chg/Wt. Ratio |
Mk I: 56% |
Mk 4: 45,8%; 52.8% |
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FUZING: |
AN-Mk 219 Mk 233 |
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BODY CONSTRUCTION: |
Mk I, Mods 2-3: Two sheet castings welded together, the bomb having a "tear drop" shape. |
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Mk IV, Mods 1-4: Single piece steel forging; cylindrical with ogival nose. |
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SUSPENSION: |
Mk I, Mods 2-3: Horizontal suspension by two lugs welded on body; may have single lug or trunnions on band. |
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MK IV, Mods 1-4: Two lugs welded on body 14 inches apart; single lug welded on opposite side. |
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COLOR AND MARKINGS: |
Grey overall with 4 inch yellow disc between two lugs, indicating H.E. My be yellow overall. |
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TAIL CONSTRUCTION: |
Mk I, Mods 2-3: Four vanes which pass down over the body are welded to a tail cone. Vanes fastened to body of bomb by screws and are braced by two sets of bar struts riveted to vanes. |
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Mk IV, Mods 1-4: Four vanes welded to a sleeve which is se-cured to bomb body with a locking nut. Box type internal struts are welded to the vanes.
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