Wood
Sikka Spruce
What is the wood all other woods are judged by?
Plexiglass
What is thew primary material used in aircraft windows?
Thermoplastics
What Family of transparent plastic may be softened by heat and can be dissolved on organic substances?
par ell
What is the grain run in laminated wood.
Aramid paper
what is the most common core material used in Honeycomb
Western Hemlock
What wood slightly exceeds Spruce, may be used as a direct replacement for spruce, yet has a less than uniform texture?
Windshields in small aircraft
Whare Plexiglass is used in aircraft
180 times the thickness
what is the maximum bend radius of plastic
Box Spar
what is a bult up spar with a hollow center
Steel
What material is used for good heat Transfer
Oak
what wood is not suitable for Aviation use due to its density.
Football lacing with aircraft safety wire.
What is a method of repairing a crack in an aircraft windshield or window?
60 degrees angle tip
What is the drill tip angle for plastic material
Casein glue
What aircraft glue detartrates when exposed to moisture and variations in tempters?
ceramics
What material is high hear resent to very high heat
Port Oxford White Cedar
What wood exceeds spruce in all categories except Gluing may be difficult if special precautions are not used.
Distortion
What happens if an aircraft windshield is improperly cleaned.
Clean the surface.
What precaution should be observed before polishing or scratch removal is begun.
8 to 12%
What is the moisture content of wood prior to use in aircraft.
Foam
what is the most popular material used as a core in homebuilt aircraft
Cross Grain, Hard Knots, Pitch pockets
what are unactable defects in wood?
Hot, humid, dirty, or dusty conditions.
what environments should a aircraft window be stored in?
Polymerizable Cements
What cements are used on Plexiglass?
100 to 150 PSI
What is joint clamping pressure for gluing wood?
Matrix mixing
in production I am the common cause of failures, what am I?