A 1/12th scale model of an aircraft was tested in a wind tunnel under sea level standard conditions. The following data was obtained. Air Speed (m s1) Angle of attack Lift Drag Pitching moment (N m) (degrees) (N) (N) 10 9.9225 0.8153723 -2.20813 15 37.20938 2.156077 -5.86508 92.61 4.690329 -12.0209 20 4 The wing area of the full sized aircraft is 83.0 m and the wing aspect ratio is 9.6. What value namic centre have?
A 1/12th scale model of an aircraft was tested in a wind tunnel under sea level standard conditions. The following data was obtained. Air Speed (m s1) Angle of attack Lift Drag Pitching moment (N m) (degrees) (N) (N) 10 9.9225 0.8153723 -2.20813 15 37.20938 2.156077 -5.86508 92.61 4.690329 -12.0209 20 4 The wing area of the full sized aircraft is 83.0 m and the wing aspect ratio is 9.6. What value namic centre have?
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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Transcribed Image Text:A 1/12th scale model of an aircraft was tested in a wind tunnel under sea level standard
conditions. The following data was obtained.
Air Speed
(m s1)
Angle of attack
(degrees)
Lift
Drag
Pitching moment
(N)
(N)
(N m)
10
9.9225
0.8153723
-2.20813
15
2
37.20938
2.156077
-5.86508
92.61
4,690329
-12.0209
20
The wing area of the full sized aircraft is 83.0 m and the wing aspect ratio is 9.6. What value
does the coefficient of moment about the aerodynamic centre have?
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