Multiple choice

Low density will generally have _____ effect on aircraft performance.

  1. no

  2. a good

  3. an adverse

  4. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Low air density adversely affects aircraft performance. It reduces lift (fewer air molecules over the wings), decreases engine power output (less oxygen for combustion), and reduces propeller efficiency. This is why aircraft need longer runways and have reduced payload capacity in hot and high conditions.

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