The information given in the following article is based on a report from
India. The first specimen of this incendiary bomb was recovered in April 1943. The
accompanying sketch illustrates the details of this bomb.
* * *
The four 1/16-inch sheet steel tail fins (1) are spot welded to the tail cone
and are braced by two sets of 5/16-inch tubular struts (2).
To the 1/8 inch steel bomb body (5) the tail cone is welded at one end (3)
and at the other end, the steel bulkhead (11) to which the steel bomb nose (12) is
secured by the three grub screws (9).
The bulkhead (11) is drilled centrally and tapped to take the long burster
tube (7) filled with HE, reported to be picric acid.
The bomb nose (12) houses the picric acid booster pellet (15) embedded in
the 2 1/2 kg HE ejection charge (14) which is separated from the steel-turned
bulkhead (11) by the cardboard disk (13).
The nose fuze employed is A.2 (b) although fuze A.2 (a) could also be
utilized: two grub screws (10) secure the nose fuze.
The normal army type suspension band (6) and rectangular-hinged suspension
lug (8) are attached centrally to the bomb body.
The main filling (4) consists of 400 to 450 tightly packed cylindrical rubber
pellets 1 inch long by 1 inch in diameter, impregnated with yellow phosphorus and
carbon disulphide (approximately 8 kgs in weight) in a 64.5 per cent solution of
white phosphorus in carbon disulphide - a heavy, clear, golden liquid approximately
6 quarts in quantity.
On impact the fuze functions to initiate the detonation of the picric acid
booster pellet (15) to detonate the HE charge in the nose of the bomb which in turn
detonates the HE in the central bursting tube (7).
Fragmentation of the nose unit up to 80 yards radius results from the first
explosion, and widespread scattering of the incendiary liquid and rubber pellets
follows the simultaneous detonation of the burster tube.
These incendiary pellets have been located within a radius of 50 yards from
the point of impact of the bomb, and when dry will ignite spontaneously on exposure
to the air: they burn at a low temperature and with a small flame for about five minutes.
When first expelled from the bomb they are in a sticky condition and will
even adhere to vertical surfaces.
|Maximum diameter of body|| ||7 3/4 in|
|Width of tail ||6.75 in|
|Length of tail||1 ft 8 1/2 in|
|Overall length, including fittings||3 ft 9 in |
|Length of missile excluding fittings||2 ft 7 in|
|Thickness of casing at side ||1/8 in|
|Thickness of casing at nose ||1.0 in (approx)|
|Thickness of casing at base ||1/8 in|
|Weight of main filling||HE in nose 2 1/2 kg|
|Total weight||46 kg|
|Span of tail vanes||9 1/2 in|
|Color and typical markings of body||Blue-gray with 1 inch bands of yellow and white|
|Color and typical markings of nose ||Blue-gray|
|Color and typical markings of tail or vanes||Blue-gray|