GATE CE 2020 Set 1 — Question 43
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Transportation Engineering → Airport Engineering → Airport Runway Length
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Question
The appropriate design length of a clearway is calculated on the basis of 'Normal Take-off' condition. Which one of the following options correctly depicts the length of the clearway? (Note: None of the options are drawn to scale)
Correct answer
(C) [figure]
Solution
For a normal take-off, the clearway length is limited by the distance from the lift-off point to the point where the aircraft reaches a height of 10.5 m (35 ft). The clearway length should not exceed 50% of this distance. From the diagrams, the distance from lift-off to 10.5 m height is . Thus, clearway length . Option C, which specifies a clearway length , is the only one that consistently fits within this design constraint among the choices provided.
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