Airman Knowledge Test Question Bank

航空

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Airman Knowledge Test Question Bank

航空

1 .A02A                        AMA
Which statement about wood decay is correct?
A) Decay that occurs before the wood is seasoned does not affect the
strength of the finished piece.
B) A limited amount of certain kinds of decay is acceptable in aircraft woods
since decay affects the binding between the fibers and not the fibers
themselves.
C) Decay is not acceptable in any form or amount.
2.       A03A                        AMA
Compression failures in wood aircraft structures are characterized by
buckling of the fibers that appear as streaks on the surface
A) at right angles to the growth rings·
B) parallel to the grain.
C) at right angles to the grain.
3.       A03A                        AMA
Glue deterioration in wood aircraft structure is indicated
A) when a joint has separated and the glue surface shows
of the wood with no wood fibers clinging to the glue.
B) when a joint has separated and the glue surface shows
and/or wood fibers clinging to the glue.
C) by any joint separation.
only the imprint
pieces of wood
4
A03A
AMA
When patching a plywood skin，abrupt changes in cross sectional areas
which will develop dangerous stress concentration should be avoided by