An airplane travels in air (p = 100 kPa, T = 10C) at 150 m/s. If a
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An airplane travels in air (p = 100 kPa, T = 10°C) at 150 m/s. If a one-eighth-scale model of the plane is tested in a wind tunnel at 25°C, what must the density of the air in the tunnel be so that both the Reynolds-number and the Mach-number criteria are satisfied? The speed of sound varies with the square root of the absolute temperature.
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To satisfy the Reynoldsnumber criteria the ratio of inertial forces to viscous forces in the wind tu...View the full answer
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Related Book For
Engineering Fluid Mechanics
ISBN: 9781118880685
11th Edition
Authors: Donald F. Elger, Barbara A. LeBret, Clayton T. Crowe, John A. Robertson
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