What should be the aspect ratio (AR) of the prop aircraft if it is designed to work with maximum loiter wing loading of 32, CD0 = 0.06, dynamic pressure of 20 unit and Oswald efficiency as 0.6.(a) 7.54(b) 8.54(c) 7.65(d) 9.65I have been asked this question in an international level competition.I'd like to ask this question from Selection of Thrust-Weight and Wing Loading topic in section Thrust-Weight Ratio and Wing Loading of Aircraft Design

What should be the aspect ratio (AR) of the prop aircraft if it is des

1.	What should be the aspect ratio (AR) of the prop aircraft if it is designed to work with maximum loiter wing loading of 32, CD0 = 0.06, dynamic pressure of 20 unit and Oswald efficiency as 0.6.(a) 7.54(b) 8.54(c) 7.65(d) 9.65I have been asked this question in an international level competition.I'd like to ask this question from Selection of Thrust-Weight and Wing Loading topic in section Thrust-Weight Ratio and Wing Loading of Aircraft Design
Answer» The CORRECT choice is (a) 7.54 The explanation: Given, Wing loading for maximum loiter W/S = 32, CD0 = 0.06, q = 20unit, Oswald efficiency E=0.6. Wing loading at maximum loiter is, W/S = q\(\sqrt{3ᴨAReCD0}\) 32 = 20\(\sqrt{3ᴨAR0.60.06}\) 1.6= \(\sqrt{3ᴨAR0.60.06}\) Hence, by SQUARING the aspect ratio AR, AR = 7.54

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