Jabiru J450 Constructors Manual
General>Glossary
Tuesday, April 6, 2010
11 of 343
General>Glossary
Here is a glossary of common composite terms that are used throughout this manual:
Term
Description
5-Minute Araldite
Quick setting brand name epoxy glue.
AT133 (not supplied)
Fibreglass cloth with wide unidirectional strands, which
provides great strength for weight. It is used in the fabrication of
the spar and undercarriage legs.
AT244
This is a standard bi-directional cloth that is used extensively for
plates and other flat surfaces.
AT303
This is a twill weaved cloth that can be moulded into curves and
is therefore used for wing and fuselage skins, cowls, etc.
AT312
A 2” wide glass tape.
AT313
This 3” wide glass tape is used to joint other glass structures.
The edges of glass tape do not fray like glass cloth.
Body Filler – (bog)
Lightweight automotive filler used in paint preparation.
Clecoes
Patented reusable fasteners used to align parts prior to flocking
and fixing with pop-rivets. Store in Acetone to keep them clean.
Coremat
Lightweight core material used to make sandwich panels.
Flock
Low-grade short fibre reinforcement for resin. Also used as a
verb: to “flock something into place” for example.
Gelcoat
White polyester resin film used on exterior of supplied
fibreglass parts to provide a smooth finish.
Glass
Fibreglass cloth. Also describes the process of wetting fibreglass
cloth into a mould or onto parts: to “glass something into place”.
Joggle
Recessed step where 2 surfaces are to be flush joined.
An example is the joggle around the windscreen and windows.
Lay-Up
Resin wetted fibreglass cloth laid into a mould or onto parts.
LC 3600 Epoxy
Epoxy system used on all structural parts.
LC 3600 Hardener
¼ part of LC 3600 epoxy.
LC 3600 Resin
¾ part of LC 3600 epoxy.
Peel Cloth
To provide a surface that requires minimal preparation before
bonding, polyester cloth is included as the top layer of a glass
lay-up. The cloth is simply „peeled off‟ and the surface beneath
is ready for bonding, hence the name.
Polyester Resin
Resin system that uses a catalyst to cure. Does not provide good
structural properties like epoxies, and for this reason is not used
on any structural parts in your Jabiru.
Q-Cells (not supplied)
Inorganic micro-spheres mixed with resin and used as a
lightweight filler, usually used in paint preparation.
Resin
Generic term used to refer to the LC3600 epoxy/resin mix.