Non mettalic structures k7-k17

The determining factors for the selection if tge 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 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

Cabin upholstery materials installed in currrent standard category aiplanes muts

be at least flame resistant.

Which parts of semi-monocoque fuselage prevent tension and compression from bending the fuselage

Longerons and stringers.

When and how is finishing tape 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 come in contact with dope fabric, which of the following provide an acceptable protective coating

Resin impregnated cloth tape and cellulose tape.

The monocoque fuselage relies largely on the strength of

skin or covering

Machine-sewn seams in aircraft covering fabrics may be which of the folliowing types

Folded-fel, French-fell, or plain lapped.

How many fabric thicknesses will be found in French-fell seam?

Four.

Finishing tape (surface tape) is used for what purpose?

To provide additional wear resistanace over the edges of fabric forming structures.

The strength classification of fabrics used in aircraft covering is based on

tensile strength.

Fabric rejuvenator is used to

Restore the condition of dope coatings.

The length of time that a catalyzed resin will remain in at work will state is called

pot life.

When making repairs to fiberglass, cleaning of the area to be repaired is essential for a good bond. The final cleaning should be made using

MEK( methyl ethyl ketone).

What reference tool is used to determine how the fiber is to be oriented for particular ply of fabric

Warp clock (or compass).

What is the material layer used within the vacumm bag pressure system to absorb excess resing durijng curing called?

Bleeder.

For doped and overlapping span-wise seams on a wing’s leading edge, overlap the fabric at least 4 inches

cover with finishing tape at least 4 inches wide, with the tape centered at the outside edge of the overlap seam.

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 a 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.

Superficial scars, scratches, service abrasion, or rain erosion on fiberglass laminates can generally be repaired by applying

one or more coats of sitable resin ( room-temperature catalyzed) to the surface.

A potted compound repair on honeycomb can usually be made on damages less than

1 inch in diameter.

When repairing large, flat surfaces with polyester resins, warping of the surface is likely to occur. One method of reducing the amount of warpage is to

use short strips of fiberglass in the bonded repair.