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</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</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</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</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</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</p> Signup and view all the answers

    What does a pinked edge on fabric prevent?

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

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

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

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

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

    What materials were the original fabrics used for covering airframes?

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

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

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

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