Apogee Black Brant VC 매뉴얼 - 페이지 6

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20. Carefully sand from the edge of the tape for-

ward to the centerline at the front of the fin using

progressively finer sandpaper either against a flat

surface or with a sanding block. Begin with 180 -

220 grit paper to approach the appropriate wedge

shape, then finish sharpening the wedge with a

320 - 400 grit sandpaper. Using too aggressive

a grit of sandpaper risks overshooting the target

shape.

21. Remove the tape from the front edge then re-

peat the taping process on the aft edge of the fins,

placing the tape so that it goes from a point 3/8"

(10mm) forward of the aft edge near the root to a

point 1/8" (3mm) forward of the corner at the aft tip

of the fin.

22. As with the forward edge of the fin, sand from

the marked centerline at the aft edge of the fin to

the tape. Do the sanding in steps, beginning with

a medium grit sandpaper and ending with a fine

sandpaper.

23. Remove the tape from the fins and saturate

the forward and aft edges of the fins with thin CyA

adhesive. Allow the adhesive to harden.

24. Sand the edges once more using a fine sand-

paper to produce a smooth surface where the CyA

adhesive was applied. The rest of these instruc-

tions represent the standard – flat – fins for visual

clarity. The steps are the same whether the fins

have been airfoiled or not.

Page 6

Step 20

Step 21

1/8" (3mm)

3/8" (10mm)

Step 22

Step 23

Step 24

Sand Here

Do Not

Sand

Front