Aircraft Coverings Flashcards
What two types of fabric are used for covering aircraft?
Organic and polyester
What determines the quality and strength requirements for fiber covered aircraft?
The original manufacturer by the never exceed speed and wing loading
What are the organic fibers used for covering aircraft ?
Cotton and linen
What is the fabric warp
The direction along the length of the 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
What should be done to a structure that will be covered with doped fabric
Dope proof it with a protective coating of an approved primer, or varnish if it is a wood structure. Cover sharp edges, metal seams, the heads of rivets, and any other feature that might cut or wear through with anti-chafe tape
How are ventilation and drainage hole edges reinforced?
With plastic, or aluminum grommets
What is one advantage of the envelope method of covering wings?
Saves times by using precut and pre-sewn envelopes
What methods are used to check the condition of doped fabric?
A test strip, punch tester, or when results are marginal, a laboratory test is needed
What is the maximum permissible deterioration for used aircraft fabric?
30 percent of the original fabric strength
What is fabric selvage edge?
An edge cloth woven to prevent raveling
What rib lace spacing is used when the original spacing is unknown?
Use the chart in the AC43.13-1B
What is a tie off knot?
A modified seine knot normally used on all stitches other than the starting stitch.
