Practice question

When an aircraft is in unaccelerated, straight-and-level flight, what is the relationship between the four fundamental aerodynamic forces?

  1. Lift equals Weight, and Thrust equals Drag.
  2. Lift is greater than Weight, and Thrust is greater than Drag.
  3. Lift equals Drag, and Thrust equals Weight.
  4. Lift equals Thrust, and Weight equals Drag.

Answer: A — Lift equals Weight, and Thrust equals Drag.

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