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The increase in aircraft weight by 10% will result in increase in aircraft ground run distance by 20%.

(a) True

(b) False

This question was posed to me during an online interview.

This interesting question is from Effect on the Take-off Distances of Flight Variables in chapter Take-off and Landing Performance of Aircraft Performance

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Right option is (a) True

Easy explanation: The increase in aircraft weight by 10% will result in increase in aircraft ground run distance by 20%. The ground run distance is given by SG=\(\frac{WV_{LOF}^2}{2g[F_N-D-\mu (W-L)]_{0.7V_{LOF}^2}}\). From the formula it is known that the ground run distance is directly proportional to aircraft weight.

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