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AIRFRAME 01
Aircraft Coverings
Question | Answer |
---|---|
What two types of fabric are used for covering aircraft? | Organic & Polyester (Synesthetic) |
What organic fibers are used for covering aircraft? | Cotton & Linen |
What determines the quality and strength requirements for fabric covered aircraft? | The original Manufacturer 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 |
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, heads of rivets, and any other feature that might cut or wear through with anti-chafe tape |
What is one advantage of the envelope method of covering wings? | Saves time by using precut and pre-sewn envelopes |
How are ventilation and drainage hole edges reinforced? | With plastic, or aluminum grommets |
What methods are used to check the condition of doped fabric? | A test strip, punch tester, or when results are marginal, a laboratory test |
What is fabric selvage edge? | An edge of cloth woven to prevent raveling |
What rib lace spacing is used when the original spacing is unknown? | Use the chart in AC 43.13-1B |
What is a tie-off knot? | A modified seine knot is normally used on all stitches other than the starting stitch |