Astrobee D Forward Fly-away Lug
Photographic details of the Astrobee D forward "fly-away
"launch lug are depicted here. The stainless steel band is bent around
the payload tube, and is secured in place by an index pin on one of the
lug have which seats in a matching index hole on the payload tube to prevent
rotation of the lug bans. Detailed dimensions of forward lug are provided
in the Aerotech Astrobee D rocket kit.
Figure 1 (top): Inside view of fly-away forward launch lug band. Note 5 screws
on each side of band that secure each half of split lug to the lug band.
Note slots in the band that provide better spring action.
Figure 2 (bottom): Outside view of fly-away forward launch lug band. The split halves
of the launch lug can be seen with the screw threads, nuts and washers that
mount them.
( Band length = 19.75 in; Band width
= 2.975 in; Band thickness = 0.022 in.; slot widdtht = 0.34 in.; Slot length
= 1.975 in. )
Lug thickness = 0.125 inches
Figure 3 (left): Inside bottom view of split launch lug showing
NAS-1128 screws, and screw head/hole indexing havles together.
Figure 4 (middle): Top side view of split launch lug showing detail
of nuts, washers and screw threads mounting lug to band. Hardware shows
0.25 inch diameter MS 21043-3 hex nuts, and 0.438 inch diameter AN 96010L
washers.
Figure 5 (right): Frontal cross section of forward launch lug have
showing how mounting screws are staggered.
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