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EFFECTIVITY:
C I R R U S
C O M P O N E N T M A I N T E N A N C E M A N U A L - C A P S
M O D E L S R 2 0
01 Feb 2013
(d)
Using die grinder and sanding disc, remove approximately 70% of remnant adhesive from
fuselage flange, and abrade flange surface for adhesive application.
(e)
Draw an offset line 0.25 inch (0.64 cm) from scribeline on new empennage cover, and trim
to offset line to facilitate trimming and fitting.
(f)
Trim empennage cover to fit, ensuring reinforced section of empennage cover is located
above rocket assembly. Maximum gap between empennage cover and fuselage is 0.10
inch (2.5 mm).
Note:
Empennage cover remnant may be used as an outline template to facilitate
cover installation.
(g)
Position empennage cover to final fit and draw four reference lines across cover/fuselage
seam line to facilitate installation.
(h)
Install warning placard to inside surface of empennage cover.
1
Solvent clean empennage cover surface where placard is to be installed. (Refer to
AMM 20-30)
2
Remove protective backing from placard using care not to contaminate adhesive
surface.
3
Place one edge of placard on surface and work downward to eliminate wrinkles and
air pockets. Avoid stretching decal as poor adhesion will result.
4
Press decal firmly to surface with fingers or rubber roller. Ensure all edges are firmly
adhered.
WARNING:
The empennage cover is secured with a low strength bond which
allows the rocket to more easily detach the cover when extracting
the parachute. An improper bond could prevent proper parachute
extraction and system failure upon deployment.
To ensure empennage cover will detach as required, do not prep
cover.
(i)
Solvent clean fuselage flange and empennage cover. (Refer to AMM 20-30)
Note:
Foam tape should be same height as fuselage. It may be necessary to build
up tape in sections where tape to fuselage height is not equal.
(j)
Offset and apply foam tape 0.50 ±0.13 inches (1.27 ±0.33 cm) around inside perimeter of
parachute compartment flange.
(k)
Mix adhesive components in the following manner:
Note:
Pot life of adhesive at 70.0° F (21.1° C) is approximately 35 to 45 minutes.
CAUTION:
Thorough mixing is essential to achieve a proper cure. Mix components
until a homogeneous appearance is achieved. Ensure incorporation of all
materials along walls and bottom of mixing cup.
WARNING:
If using standalone modifier, do not mix modifier (Heloxy 68) directly
into hardener (Epicure 3234), as violent chemical reaction may occur.
Keep adhesive materials away from sources of ignition.
Mix and use adhesive materials only in areas with adequate ventilation.
Wear protective gloves, goggles, and respirator when handling adhe-
sives and solvents.
