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At any time flap is lowered, the Lift/Drag ratio will beQuestion 35Select one:a.Increasedb.Remain the samec.Reducedd.Flap extension has no effect on L/D max

Question

At any time flap is lowered, the Lift/Drag ratio will be

Question 35
Select one:
a. Increased
b. Remain the same
c. Reduced
d. Flap extension has no effect on L/D max

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Solution

Analysis of Flap Effects on Lift/Drag Ratio

  1. Understanding Lift and Drag: Flaps are aerodynamic surfaces on the wings of an aircraft that can be extended to increase lift during takeoff and landing. However, extending flaps also increases drag.

  2. Effect on Lift/Drag Ratio: The Lift-to-Drag (L/D) ratio is a critical measure of an aircraft's efficiency. When flaps are extended:

    • Lift Increases: The primary role of flaps is to enhance lift, allowing the aircraft to generate more lift at lower speeds.
    • Drag Increases: The same extension causes increased drag, which counteracts some of the benefits of increased lift.
  3. Conclusion: Although extending flaps increases lift, it also increases drag. The net effect is that the Lift/Drag ratio decreases because you are getting more lift but at the cost of significantly increased drag.

Final Answer

c. Reduced

This problem has been solved

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