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A light aircraft flies at 31.5 m/s in air at 20°C and 1 atm. Its wing is an NACA 0009 airfoil, with a chord length of 150 cm and a very wide span (neglect aspect ratio effects). Estimate the drag of this wing per unit span length from the graph for a = 0°. CL With flap at 60 -12 1.6 1.2 -0.8 104 -8 LA N/m 10 4 a, deg Re=6 x 106 8 No flap Re=9 x 106 6x 106 3 x 10° 12 16 T 1 Split flap -0.04 8 1 0.03 CD 0,02 / -0.01 24 1 0 7 7 77 With flap at 60° 4 a, deg Re-3x 106 No flap 8 12 6 x 106 9 x 105 16

A light aircraft flies at 31.5 m/s in air at 20°C and 1 atm. Its wing is an NACA 0009 airfoil, with a chord length of 150 cm and a very wide span (neglect aspect ratio effects). Estimate the drag of this wing per unit span length from the graph for a = 0°. CL With flap at 60 -12 1.6 1.2 -0.8 104 -8 LA N/m 10 4 a, deg Re=6 x 106 8 No flap Re=9 x 106 6x 106 3 x 10° 12 16 T 1 Split flap -0.04 8 1 0.03 CD 0,02 / -0.01 24 1 0 7 7 77 With flap at 60° 4 a, deg Re-3x 106 No flap 8 12 6 x 106 9 x 105 16

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Required information A light aircraft flies at 31.5 m/s in air at 20°C and 1 atm. Its wing is an NACA 0009 airfoil, with a chord length of 150 cm and a very wide span (neglect aspect ratio effects). Estimate the drag of this wing per unit span length from the graph for a = 0°. With Aup at 60% $ 34 N/m 19 41 deg Rc 6 x 10 5 f No flap 12 Split flap Re-9 x 106 6 x 106 3 × 10 0.02 / 18 44 1 2 # With lap at 60º Re-3x 10° No ilap 8 6x 105 9x105 16
Transcribed Image Text:Required information A light aircraft flies at 31.5 m/s in air at 20°C and 1 atm. Its wing is an NACA 0009 airfoil, with a chord length of 150 cm and a very wide span (neglect aspect ratio effects). Estimate the drag of this wing per unit span length from the graph for a = 0°. With Aup at 60% $ 34 N/m 19 41 deg Rc 6 x 10 5 f No flap 12 Split flap Re-9 x 106 6 x 106 3 × 10 0.02 / 18 44 1 2 # With lap at 60º Re-3x 10° No ilap 8 6x 105 9x105 16
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