
The cluster adapter has a thin steel body that is shaped like a bomb, except the nose is not rounded off to make a full hemisphere. A standard-type bomb fin is affixed to the rear of the adapter, and a fuze fits in the nose. Hoisting and suspension lugs are located at the top. Internally, the adapter is equipped with cluster bars for positioning of the bombs when loaded. An L-shaped angle bar runs the entire length of the adapter along the bottom cluster bar. Into the angle bar is fitted a light steel tube which encloses a length of primacord that extends from the nose fuze to the other end of the cluster adapter. When the cluster is filled, the bombs are packed nose-forward, 19 in the front half of the adapter and 19 in the after portion. The assembly is held together by nine nailless steel straps. The cluster adapter then becomes a 500- pound aimable cluster that will fit any 500 pound bomb station, and. when dropped from high altitudes, approximates the trajectory of a 100 pound demolition bomb.
Clusters |
Bombs |
|---|---|
E28 |
AN-M69 (NP, IM) Incendiary |
E29 |
M74 (NP, PT1), E5 (IM), Incendiary |
E34 |
E5 (H) Chemical |
E52 |
AN-M69 (Practice) Incendiary |
E54 |
E5 (Simulated H) Chemical |
E62 |
M77 (HC) Chemical |
If desired, the cluster adapter may be kept intact during the entire period of flight, bursting open on impact.
This adapter is being replaced by the Cluster Adapter M23.
OP 1664, Volume 2 - US Explosive Ordnance (1947)
USNBD - Bombs and Fuzes, Pyrotechnics (1945)