Jeppesen Airframe Ch. 6 Sec. A Flashcards

1
Q
  1. ______ are used in aircraft dope to make its film flexible.
A

Plasticizers

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2
Q
  1. A dope film should be scrubbed with _____ and water, and any wax removed with an appropriate solvent before the rejuvenator is sprayed on.
A

Scotch-Brite

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3
Q
  1. Rejuvenator is a mixture of potent ____ and ___
A

Solvents, Plasticizers

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4
Q
  1. Rejuvenators restore the ___ to a dried-out dope film.
A

Plasticizers

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5
Q
  1. Finish coats of dope should be sprayed on with a ____ coat.
A

Heavy

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6
Q
  1. Colored dope may be given a glossier finish by mixing it with up to ____ % clear dope.
A

20

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7
Q
  1. The topcoats of a doped finish may peel off if there is a ____ aluminum powder in the aluminum dope coats.
A

Too much

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8
Q
  1. A dope film blushes when ____ condenses out of the air into the freshly applied dope film.
A

Moisture

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9
Q
  1. Mixing ____ with the dope will prevent blushing if the conditions are not too severe.
A

Retarded

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10
Q
  1. The relative humidity of the air may be lowered to prevent blushing by ____ the air.
A

Warming

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11
Q
  1. Two causes for pinholes in a dope film are:
A

Excessive heat or wind

Excessively atomized spray gun air

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12
Q
  1. Three causes for runs and sags in a dope surface are:
A

Moving the gun too slowly.

Holding the work too close.

Not thinning the dope properly.

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13
Q
  1. Orange peel in a dope surface may be caused by:
A

Improper Spraying Techniques.

Thinners Evaporating too quickly.

Air Drafts over the surface.

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14
Q
  1. Localized spots within the dope film that do not dry are called _____.
A

Fisheyes

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15
Q
  1. Dope that is brushed on too heavy or brushed when it is too cold will cause dope ____.
A

Roping

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16
Q
  1. Two disadvantages of a polyurethane finish on a fabric-covered surface are:
A

They are designed for metal.

They are more difficult to repair.

17
Q
  1. Spraying the newer polyurethane materials over a special _____ makes them suitable for use over fabric surfaces.
A

Flexative modified primer

18
Q
  1. Polyurethane material should be removed from a damaged surface with ____before a repair can be made.
A

Sandpaper