B-aircrsft covering Flashcards
what two types of fabric are used for covering aircraft?
Organic and polyester
What are the organic fibers used for covering aircraft?
Cotton and linen
What determines the quality and strength requirements for fabric covered aircraft?
The original manufactured by the never exceed speed and wing loading
What is fabric warp?
The direction along the length of fabric
What is the purpose of reinforcing tape?
most commonly used on rib caps after the fabric covering is installed to protect and strengthen the area for attaching the fabric to the ribs
We should be done to a structure that will be covered with dope fabric
dope proof it with a protective coating of an approved primer or varnish if it is a wood structure, cover, sharp edges, metal scenes the heads of the rivets and any other feature that might cut or wear through the anti-chafe tape
What is one advantage of the envelopes method of covering wings?
saves time by using pre-cut and Pre-sewn envelopes
how are ventilation in drainage hole edges reinforced?
With plastic or aluminum grommets
what methods are used to check the condition of dope fabric?
A test strip punch tester or when results are marginal in laboratory test is needed
what is the maximum permissible deterioration for used aircraft fabric?
30% of the original fabric strength
what is fabric selvage edge?
an edge of clock woven to prevent raveling
what rib lace spacing is used when the original spacing is unknown
Use the chart in AC 43.13 –1 B
what is a tie off knot?
A modified seine knot is normally used on all stitches, other than the starting stitch
