I.B. 30-lb. Mks I, II, and IIM (Obsolete), and III, IIIM, IV, and IVM (Service)
No Image Available Filler and Weight
NA,
Body and Overall Weight
NA, 25 lb.
Color
Bright red
Type of Round, DODIC
I.B.,Mk IVM, NA
Description:
The bomb consists of a cylindrical body, with a hemispherical nose at one end and a tail at the other; the cylindrical tail strut being connected by four equispaced fins to the rear end of the tail cone. The cylindrical body is made from welded Lube, the forward end of which is reduced slightly to fit into the rim of the hemispherical steel-plate nose to which it is welded. The nose is pierced centrally and has a buster container welded into it and closed by a screwed plug, the outer surface of which conforms with the shape of the bomb nose. A flanged tail plate, is welded in the rear end of the body, and has a hollow spigot through which the bomb ia charged in the center. The spigot is closed by a screwed plug, and is threaded externally for the attach¬ment of the tail. Riveted in the forward end of the tail cone is a. diaphragm plate having a threaded boss, which screws onto the tail plate spigot to secure the tail to the bomb body. A 10 per cent air space is left in the body when it is filled. A 3-in. wide cylindrical strut is at¬tached to rear of the tail cone by four fins spot welded to both strut and cone. The tail cone is closed by an end cap.
Use:
Incendiary bombs of many various types, ranging in weight from 4 to 2o0 lb., are at pres¬ent in service use for operations against dif¬ferent types of targets. The Construction and filling of these bombs differ with the individual types, and no general description can be given here to cover the complete range.
Functioning:
On impact, the firing of the gun¬powder in the magazine of the fuse disrupts the bomb body along the weld, and scatters the filling over a considerable area to produce a large number of fires.
Munition Components:
  • Fuze Mk I, Nose Fuze No.38
Data Source:
OP 1665 Explosive Ordnance British 1946
Munitions Tech Data Sheet:
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