BSU-86/B Bomb Fin
general-purpose bombs, Mk 82 Mods, or the practice
bomb BDU-45/B (fig. 1-26). The fin provides a
retarded (high-drag) or unretarded (low-drag) bomb
delivery capability for the aircraft. The BSU-86/B fin is
attached to the Mk 82 or BDU-45/B bomb by eight
setscrews. A 25-degree wedge is located at the tips of
each fin to impart spin. The air stream drives the fin
open rapidly, when the MAU-199/B spring arming wire
(SAW) is activated. The spring load under each fin
blade initiates fin opening.
Figure 1-26.BSU-86/B fin with Mk 82 bomb.