The round bracket in the accelerating force represents the drag- lift ratio at the ground angle of attack.(a) True(b) FalseThe question was asked in examination.Enquiry is from Estimation of Take-off Distances topic in section Take-off and Landing Performance of Aircraft Performance

The round bracket in the accelerating force represents the drag- lift

1.	The round bracket in the accelerating force represents the drag- lift ratio at the ground angle of attack.(a) True(b) FalseThe question was asked in examination.Enquiry is from Estimation of Take-off Distances topic in section Take-off and Landing Performance of Aircraft Performance
Answer» The correct choice is (a) True Best explanation: The formula for accelerating force is given by: \(\frac{F}{W}=\Big\{\frac{F_N}{W}-\mu_R-sin\gamma_R\Big\}-\frac{L}{W}\Big(\frac{C_D}{C_L}-\mu_R\Big)\) where F is force, W is weight, μR is runway coefficient of the rolling friction, γR is runway slope, L is LIFT, CD and CL are the coefficients of drag and lift. The round BRACKET in the accelerating force represents the drag- lift ratio at the ground angle of ATTACK.

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