Bomb, 1000 lb AP, AN-Mk 33 Mod 1, 2, 3
Description
The bomb body is of the same design as the 1,600 pound AN-Mk 1 AP Bomb.
It is cylindrical in shape with a slightly tapered tail and a round nose ending in a sharp point. The nose portion of the bomb is solid, bringing the total weight of the empty bomb to between 800 and 825 pounds. The rear portion is threaded to receive a tail-base plug in the same manner and for the same purpose as that found in the GP bombs. Drilled and tapped in the bomb body are blind holes protected by shipping plugs threaded into these holes. Approximately 29 inches from the nose will be found four blind holes for the first of
the double suspension lugs. When assembled, the shipping plugs are removed by means of a screwdriver and the suspension lug is then securely attached by means of four screws which are safety-wired in place. Fourteen inches from the first set of holes will be found a second set of four blind holes for the second suspension lug. Between these two sets of holes are two more blind holes for attachment of a hoisting lug. The body will also have two blind holes on opposite sides into which trunnions are threaded. Opposite the hoisting lug will be found the final series of holes to receive the single suspension lug or guide key. Guide keys are provided for longitudinal bracing of the bomb when suspended by slings in the torpedo position, for example in Navy TBD and TBF planes.
A box type fin assembly is provided which seats around a machined down portion at the tail end of the body. It is held in place by a fin lock nut which screws around the tail base plug. The fuze used is the AN-Mk 228. It utilizes an arming bracket over the fuze which alines with suspension lugs in the same manner as described for the 1,600 pound AP AN-Mk 1.
There are no physical differences among Mods 1, 2, and 3. The mod number is used only to identify the manufacturer.
Hazardous Components
The main filling of these bombs is pressed Explosive “D" (140 lb, 63.6 kg) or cast TNT (140 lb, 63.6 kg). The tail fuze pocket requires the use of the granular TNT Auxiliary Booster Mk 1.
See Also
Bomb, 1600 lb AP, AN-Mk 1 Mod 1, 2, 3
Booster, Auxiliary, Mk 1 Mod 0
Source(s)
OP 2216, Volume 1 - Aircraft Bombs, Fuzes, and Associated Components (1960)
OP 1280, Aircraft Bombs (1955)
OP 1664, Volume 2 - US Explosive Ordnance (1947)
USNBD - Bombs and Fuzes, Pyrotechnics (1945)
TM 9-1904, Ammunition Inspection Guide (1944)
