Aircraft Covering Flashcards
1) Machine-sewn seams in aircraft covering fabrics may be of the folded-fell or French-fell types.
2) A plain lapped seam is never permissible.
Regarding the above statements,
Only No.1 is true
Fabric rejuvenator is used to
Restore the condition of dope coatings.
Fungicide and mildewicide additives are important for fabric covered aircraft, such as
Cotton and linen
The best method of repair for a fabric-covered surface which has an L-shaped tear, each leg of which is approximately 14 inches long, is to
Sew with a baseball stitch from the center of the tear out toward the extremity of each leg and then dope on a patch.
When testing the strength of Grade A cotton fabric covering an aircraft that requires only intermediate grade, the minimum acceptable strength the fabric must have is
70 percent of the original strength for intermediate fabric.
Finishing tape (surface tape) is used for what purpose?
To provide additional wear resistance over the edges of fabric forming.
How many fabric thicknesses will be found in a French-fell seam?
Four
The strength classification of fabrics used in aircraft covering is based on
Tensile strength
The determining factor(s) for the selection of the correct weight of textile fabric to be used in covering any type of aircraft is the
Speed of the aircraft and the maximum wing loading.
Moisture, mildew, chemicals, and acids have no effect on
Glass fabric
When and how is finishing tape is applied on a fabric-covered aircraft?
Doped on after the first or second coat of dope.
When dope-proofing the parts of the aircraft structure that came in contact with doped fabric, which of the following provide an acceptable protective coating?
1) Aluminum foil
2) Resin impregnated cloth tape.
3) Any one-part type metal primer.
4) Cellulose tape.
1 and 4
