Fabric Treatments and Covering Techniques Quiz

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Questions and Answers

What training aids do STC holders produce to assist with fabric covering procedures?

  • Audio recordings
  • Instructional manuals and videos (correct)
  • Online quizzes
  • Checklists

Why is the opportunity to inspect the aircraft during the recovering process considered rare?

  • Because fabric coverings are often replaced frequently
  • Because the aircraft is usually inaccessible during this process
  • Because inspectors are not interested in this phase
  • Because fabric lasts a long time (correct)

What should be considered when selecting the method of fabric attachment during recovering or repairing an aircraft?

  • Only the cost
  • The color of the fabric
  • The speed of the attachment process
  • The strength and reliability compared to the manufacturer's method (correct)

What are the two acceptable methods of fabric covering mentioned in the text?

<p>Blanket and Envelope methods (B)</p> Signup and view all the answers

What is involved in the blanket method of re-covering an aircraft?

<p>Using multiple flat sections of fabric (C)</p> Signup and view all the answers

Why is it important to carefully note the location of inspection covers and drain grommets when removing old fabric from an airframe?

<p>To ensure they are correctly reinstalled later (D)</p> Signup and view all the answers

What is the purpose of using plasticizers in dope formulas for fabric coverings?

<p>To eliminate separation of coatings from the fabric (A)</p> Signup and view all the answers

What is the advantage of properly protecting and coating polyester fabric for aircraft coverings?

<p>It ensures that the fabric lasts indefinitely and is stronger than cotton or linen (D)</p> Signup and view all the answers

What has happened to the use of cotton and linen coverings on United States certificated aircraft?

<p>They are no longer used, and polyester is now the standard (A)</p> Signup and view all the answers

What does a pinked edge on fabric prevent?

<p>Raveling of the fabric edge (C)</p> Signup and view all the answers

What is the purpose of a selvage edge in cloth, tape, or webbing?

<p>To prevent raveling (B)</p> Signup and view all the answers

What is meant by the term 'bias' in relation to fabric?

<p>A cut, fold, or seam made diagonally to warp or fill threads (A)</p> Signup and view all the answers

What is the purpose of suspending a container from one end of the fabric strip?

<p>To measure the breaking strength of the fabric (D)</p> Signup and view all the answers

What action should be taken if the breaking strength of fabric is still uncertain?

<p>Send a sample to a qualified testing laboratory for breaking strength tests (A)</p> Signup and view all the answers

Why do aircraft owners often prefer not to have test strips cut out of the fabric?

<p>Damages caused by removing test strips can affect airworthiness (C)</p> Signup and view all the answers

What is the minimum breaking strength for fabric used in aircraft with a loading VNE speed below 9 lb/sq ft?

<p>&gt; 35 lb (C)</p> Signup and view all the answers

Why must all coatings be removed from the fabric test strip before conducting tests?

<p>To ensure accuracy in breaking strength tests (D)</p> Signup and view all the answers

What was the primary advantage of using fabric covering on an aircraft?

<p>Light weight (B)</p> Signup and view all the answers

What should be done if properly installed and maintained polyester fabric shows appreciable strength degradation?

<p>Repairing or replacing the degraded fabric (D)</p> Signup and view all the answers

What were the two primary disadvantages of fabric coverings on aircraft?

<p>Lack of durability and heavy weight (D)</p> Signup and view all the answers

What materials were the original fabrics used for covering airframes?

<p>Irish linen and cotton (D)</p> Signup and view all the answers

Which coating was known for its extreme flammability when used on aircraft fabric?

<p>Nitrate dope (B)</p> Signup and view all the answers

What issue did builders face due to the tendency of organic fabrics to sag?

<p>Aircraft structure being exposed to the elements (D)</p> Signup and view all the answers

What was the drawback of butyrate dope compared to nitrate dope when used as a fabric coating?

<p>Inferior adhesion to the fabric (A)</p> Signup and view all the answers

What was the purpose of adding butyrate dope coatings to the fabric?

<p>To reduce the overall flammability of the fabric covering (B)</p> Signup and view all the answers

Why did attempts to paint the coated fabric prove unsuccessful?

<p>Due to the inability of paint to adhere well to nitrate dope (B)</p> Signup and view all the answers

How did the addition of aluminum solids to the butyrate coatings benefit the fabric and aircraft structure?

<p>It reflected the sun’s rays and prevented harmful UV rays from penetrating (D)</p> Signup and view all the answers

Why did organic fabrics like cotton or linen have a limited service life on aircraft?

<p>As a result of exposure to elements like sunlight causing degradation (D)</p> Signup and view all the answers

What was the reason for aluminum becoming the material of choice as the aviation industry developed?

<p>As engines became more powerful and aircraft structures more aerodynamic (B)</p> Signup and view all the answers

What issue was not addressed by the mixture of nitrate dope and butyrate dope in regard to fabric degradation?

<p>Deterioration caused by ultraviolet (UV) radiation from the sun (A)</p> Signup and view all the answers

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