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Module 11. Aeroplane aerodynamics, structures and systems

An increase in aspect ratio will

  • cause VbaseMD to be increased.
  • cause induced drag to increase.
  • cause VbaseMD to be reduced.

Explanation

A higher aspect ratio reduces induced drag, so the drag curve and the minimum-drag point move to a lower speed. The speed for minimum drag (best L/D, VimD) therefore decreases. Since induced drag falls rather than rises with greater aspect ratio, the option claiming increased induced drag is incorrect.

Apavlenko asking:

Hello. What is VbaseMD?

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