Which of the following is required condition of thrust required minim

1.	Which of the following is required condition of thrust required minimum?
A.	CL = (CD0/K)0.5
B.	CL = (CD0)*0.21
C.	CL = (CD0/K)*1.5
D.	CL = 0.5
Answer» B. CL = (CD0)*0.21

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Which of the following is required condition of thrust required minimum?

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