Aircraft Covering Flashcards
How would you determine the strength requirements for fabric used to re-cover an aircraft
Must be of at least the quality and strength of the fabric used by the original manufacturer
What two types of organic fibers are used for covering aircraft
Cotton and linen
What is meant by warp, weft, and bias
Warp is the direction along the length of the fabric,
Weft is the direction across the fabric at right angles to the warp, and bias is a direction at 45 degree angle to warp and weft
What is the purpose of the selvage edge on a roll of fabric
It prevents the fabric from unraveling
How are the fabric type and strength requirements determined from fabric covered aircraft
The original manufacturer determines the fabric type and the strength requirements
What types of synthetic fibers are used for covering aircraft
Fiberglass and nylon
Which of the several types of fabric is unaffected by moisture and mildew
Fiberglass
What is the function or purpose of reinforcing tape
To prevent the lacing cord from cutting through the fabric
Where would you use surface tape
Over rib stitching and sewed seams, over lapped edges, around corners, and along leading and trailing edges
How should the edges of drainage inspection and ventilation holes be reinforced
With plastic, aluminum, or brass grommets
Fabric is considered unairworthy when it has deteriorated to what percentage of its original strength
Less than 70% or more than 30%
How should a structure that will be covered with doped fabric be prepared following inspection and prior to covering
Treat it with protective coating of paint or varnish
What is the principle advantage of the envelope method for covering wings
Almost all the seams are machine sewed by the envelope supplier
What is a tie off knot
A standard modified seine knot
Name three common types of machine sewed seams
Plain overlap, folded fell, and French fell
