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British Cluster Projectile, 500 lb, No. 4 Mk 1

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1394-187

Description

This cluster is hexagonal in shape, and contains fourteen 30-lb. type “J" incendiaries, in two fagots of seven bombs each. The bombs are placed nose-to-nose and arranged in super-imposed rows of 2, 3, and 2 in each fagot. The bombs are retained in positon by the front and rear end plates, the top and bottom beams, the side fairings, tensioning straps, and the retaining bar. The front and rear end plates secure the spring-loaded covers of the bomb parasheet containers. Lateral pins on the retaining bar engage with and hold the tabs of the tensioning straps in position. A shear wire near the end plate acts as a safety device for the retaining bar. To the rear end of the retaining bar is secured a pivoted lever, the lower end of which engages with the piston in the fuze adapter.

The fuze adapter is fixed to the channel plate, which in turn is fastened to the rear end plate. A nut. welded to the center of the rear end plate, receives the tail tie rod to which the tail unit is secured by a tension nut. A nose fairing is secured to the front end plate, and fairings are fitted to the top beam. The fairing adjoining the rear end plate is slotted to receive the fuzing lanyard of the fuze and the safety wire of the tai) unit. •

The Tail Unit No. 44 Mk I is located b.v two dowel pins and is provided with two inspection windows to ensure correct alignment of the arming forks. A tie rod connects the tail unit to the cluster.

A single suspension lug is fitted to the top beam, and tapped holes are also provided for the fitting of American lugs where necessary.

This cluster projectile is designed to replace the Small Bomb Container as a means of carrying 30-lb. type J incendiaries.

Functioning

No information about functioning.

See Also

Target Identification Bombs and Candles

Source(s)

OP 1665, British Explosive Ordnance (1946)