6.3.2 - Wooden Structures Flashcards
What is the main piece of structure in a truss type wing?
The wooden spar running spanwise.
What shape are access holes normally?
Circular
What needs to be done before inspecting glue lines?
Any protective paint should be removed.
What should be used when inspecting a glue line?
Magnifying glass
How is ‘dry-rot’ normally indicated?
Small patches of crumbling wood.
List some miscellaneous defects concerning wood
Shrinkage
Elongated boot holes
Bruising/crushing
Compression
How long should timber be kept in dry storage before being fitted to an aircraft?
60 days
Where and how long is timber seasoned?
In an air-drying shed
1 to 3 years
After timber has been converted to aircraft structural parts, what defects should be looked for?
Decay/rot
Knots
Blue stain
What needs to be done to powdered resins before use?
Water needs to be added.
What may effect the setting time of an adhesive?
The temperature
The higher the temp, the lower the setting time.
What main loading are glued joints designed to take primarily?
Shear loads
