REAR BOTTOM SKIN
V-12
Turn the wing over, and support the trailing edge.
16.
Crimp the L angles using the bottom curvature of the ribs as a guide.
17.
Position the Bottom Skin 6SV3-6.
REFERENCE
: 6SV3-6, 6SV1-2
SUPPORT
: Support the Ribs at the rear using the following block spacers:
S6 159
S7 133
S8 107
S9 81
Subtract upper coordinate U from the last station X from station 0 add 2mm for the
thickness of the top skin as shown drawing 6SV1 . Example for S6: 264 –107 + 2 = 159
POSITION
: a) The aft edge flush with the Zee.
b) The I/B end is flush with the Root of the Main Spar.
LAYOUT
: Mark the rib station on the front edge of the skin: use a straight edge to connect the
predrilled holes in the skin to extend the rib rivet line to the front edge of the
sheet.
POSITION
: Line up the rib station marks on the spar extrusion, from step 6, with the rib
station lines marked on the edge of the sheet. Clamp the skin to the Spar. Clamp
the Rear Zee to the Skin when the pre-drilled holes for the rive line are in line with
the rivets in the rear flange of the Rear Ribs and Rear Zee from Step 3
CHECK
: a) The pre-drilled holes in the Skin for the aft rivet line for the Rear Zee are in the
middle of the flange.
b) The front edge of the skin is flush with the spar.
b) The pre-drilled holes for the rib rivet line are in line with the rib.
PITCH
: a) 50 A4 (table on 6SV4).
b) The pitch at rib #6 is 25mm.
18.
L ANGLES
: Crimp and Install the L Angles
19.
TACK RIVETS
the front edge of the skin to the spar.
20.
CLECO & RIVET
: De-burrs.
