Bomb, 100 lb Practice, Mk 15 Mod 2, 3, 4
These bombs are impact fired signal-generating, practice bombs used for training aircrews.
Practice bomb Mk 15 Mod 2 is identical to the Mod 3 except that it is not adapted for the use of a fuze and signal. It is filled with water or a mixture of sand and water for spotting purposes. For training purposes, a small washer may be soldered to the nose of the bomb to simulate a fuze.
Practice bomb Mk 15 Mod 3 has a light cased, cylindrical body with a threaded filling hole in its rounded nose. A box fin assembly consisting of four metal vanes attached to a cone is welded to the aft end of the body. The bomb is used with practice bomb signal Mk 7 Mod 0 and inert fuze Mk 247 Mod 0 both of which are secured to the aft end of the bomb.
The practice bomb Mk 15 Mod 4 is a light cased, cylindrical bomb with a round nose and an integral box fin and cone. A flash tube, extending throughout its transverse axis, houses a pyrotechnic signal and firing pin assembly.
Mk 15 Mod 3 - Signal, Practice Bomb, Mk 7 Mod 0, Tail, Impact, AN-Mk 247 Mod 0
Mk 15 mod 4 - Signal, Practice Bomb, Mk 4 Mod 3, 4
Nothing else to see.
TM 9-1325-200, Bombs and Bomb Components (1966)
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)