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
Solution
Analysis of Flap Effects on Lift/Drag Ratio
-
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.
-
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.
-
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
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