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D.P. 22,000-lb. Mk I, "Grand Slam", (Service) |
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Filler and Weight | ||
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| Torpex, TNT, | |||
| Body and Overall Weight | |||
| Cast steel, 22,400 lb. | |||
| Color | |||
| Green over-all; red band near nose | |||
| Type of Round, DODIC | |||
| Grand Slam, D.P., NA |
| Description: |
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| The bomb body is manufactured of cast steel, with a solid nose plug and with three exploders fitted 120" apart in the base plate. The bomb bodies are issued with exploders inserted, and the exploder tubes are sealed with shipping plugs. The tail is attached to the after end of the bomb body by 12 studs. A cylindrical metal cowling, placed between the bomb body and the tail cone, enhances the streamlining of the bomb. The bomb contains an explosive filling of Torpex, with a one-inch layer of TNT topping added to the after end. Four inches of wood-meal/ wax composition is then added, and the filling sealed with a 1/2-in. ply board washer. The three exploders pass through holes in this washer and are bold in place by a heavy base plate, which is secured by bolts to the bomb body. |
| Use: |
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| These bombs were designed for special operational uses to give deep penetration of the earth and to produce heavy shock 'waves as a result of the explosion of their main charge. They have a charge-/weight ratio of about 45%, and are not intended for use as armor- or concrete-piercing bombs. The two sizes of bombs are identical in all respects, the 22,000-lb. D.P. being merely an enlarged version of the 12,000-lb. D.P. A rather unusual feature of these bombs is the use of a cowl between the bomb body and the fail assembly to enhance their streamlining. Both DP, bombs are tail fused only, each bomb using three Tail Pistols No. 58 located 120 degrees apart in the base plate. |
| Functioning: |
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| The special tail unit, No. 82 Mk 1, is constructed of light alloy and consists of a cone to which, are attached four fins of streamlined cross-section.. The fins are set at an angle of 5° to the axis of the tail cone, giving a right-hand spin to the bomb as it falls. The tail fits over twelve 7/16-in. studs fitted into the bomb body, and is securely fastened to the. Studs by Simmonds nuts. Three hand-holes in the tail cone give ready access to the three tail pistols. |
| Munition Components: |
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| Data Source: |
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| OP 1665 Explosive Ordnance British 1946 |
| Munitions Tech Data Sheet: |
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