used for the unretarded mode of delivery, and the
Snakeye fin assembly can be used for either the
unretarded or retarded mode of delivery.
Conical Fin
The typical BSU-33 conical fin assembly (fig.
1-20) is steel, conical in shape, and has four fins to
provide
stability.
Access
covers,
attached
by
quick-release screws, are located on the sides of the fin
body, providing access for dearming and inspections.
There is a drilled or punched hole at the top and bottom
of the forward end of the fin body. This hole is used to
install an arming wire when the bomb is being
configured for electric tail fuzing. The fin is attached to
the aft end of the bomb, and is secured in place by
tightening the fin setscrews into the V-groove of the
bomb.
The conical fin may be used with all Mk 80 (series)
bombs. The basic difference between the types of
conical fins is their physical size, the larger the bomb,
and the larger the fin.
Snakeye Fin Assemblies
Snakeye fin assemblies are used with the Mk 82
LDGP bombs. They are capable of delivering bombs at
high speed and low altitude without the danger of
damaging the aircraft from ricocheting bombs or
fragments.
A
physical
description
of
both
fin
assemblies
and
the
principles
of
operation
are
discussed in the following paragraphs.
1-23
Figure 1-20.—Typical fin assemblies.
