Wood Structures Flashcards
Laminated wood spars may be substituted for solid rectangular wood spars…
if the same quality wood is used in both.
The strength of a well-designed and properly prepared wood splice joint is provided by the what?
glue.
Where is information found concerning acceptable species substitutions for wood materials used in aircraft repair?
AC 43.13-1B
In cases of elongated bolt holes in a wood spar or cracks in the vicinity of boltholes,…
a new section of spar should be spliced in or the spar replaced entirely.
A faint line running across the grain of a wood spar generally indicates what?
compression failure.
Any wooden member that has been overstressed is subject to which type of failure?
Compression.
Which statement about wood decay is correct?
Decay is not acceptable in any form or amount.
Which statement concerning wood decay is correct?
Any form or amount of decay is not permitted.
Which of the following conditions will determine acceptance of wood with mineral streaks?
Careful inspection fails to reveal any decay.
The I-beam wooden spar is routed to what?
reduce weight.
Pin knot clusters are permitted in wood aircraft structure provided…
they produce a small effect on grain direction.T
he cantilever wing uses what?
no external bracing.
Laminated wood is sometimes used in the construction of highly stressed aircraft components. This wood can be identified by its what?
parallel grain constuction.
When patching a plywood skin, abrupt changes in cross-sectional areas which will develop dangerous stress concentration should be avoided by using what?
circular or elliptical patches.
Glue deterioration in wood aircrarft structure is indicated…
When a joint has separated and the glue surface shows only the imprint of the wood with not wood fibers clinging to the glue.
