Aircraft Dynamic Stability and Performance Tradeoffs
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What is the purpose of incorporating feedback control systems in most modern aircraft?

  • To tailor the dynamic stability characteristics of an aircraft
  • To minimize aircraft drag and decrease the size of the horizontal tail
  • To augment the dynamic stability characteristics and achieve excellent performance and handling qualities (correct)
  • To oppose the undesired motion and amplify the pilot’s control command

    • How do feedback control systems oppose undesired motion in an aircraft?

  • By sensing key aircraft motion parameters and amplifying the pilot’s control command
  • By deflecting the appropriate control surface to oppose the undesired motion (correct)
  • By decreasing the size of the horizontal tail to minimize drag
  • By tailoring the dynamic stability characteristics of an aircraft

    • What tradeoff may exist in many aircraft designs?

  • Between excellent performance and acceptable handling qualities
  • Between minimizing aircraft drag and increasing the size of the horizontal tail
  • Between acceptable performance and acceptable dynamic stability characteristics (correct)
  • Between static stability and dynamic stability

    • What is the result of decreasing the size of the horizontal tail in an aircraft?

    <p>Decrease in short-period damping ratio and potential failure to meet Level 1 requirements for handling qualities</p> Signup and view all the answers

    What do test pilots rate most modern aircraft high on?

    <p>Cooper–Harper scale for handling qualities</p> Signup and view all the answers

    What is the purpose of feedback control systems in most modern aircraft?

    <p>To augment the dynamic stability characteristics and achieve excellent handling qualities</p> Signup and view all the answers

    What tradeoff may exist in many aircraft designs?

    <p>Acceptable performance versus acceptable dynamic stability characteristics</p> Signup and view all the answers

    What is the result of decreasing the size of the horizontal tail in an aircraft?

    <p>Decrease in short-period damping ratio and potential decrease in handling qualities</p> Signup and view all the answers

    How do feedback control systems oppose undesired motion in an aircraft?

    <p>By deflecting the appropriate control surface to add damping and oppose the motion</p> Signup and view all the answers

    What do test pilots rate most modern aircraft high on?

    <p>Cooper–Harper scale for handling qualities</p> Signup and view all the answers

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