An airplane that has a cross-sectional diameter D = 4 m of the front portion is to fly at a speed of 600 km/hr in air that has a density of 1.1 kg/m and dynamic viscosity of 1.27 x 10 Pa.s. A small size model of scale ratio (1/17) to be tested in a different fluid that has a dynamic viscosity 5 x 10-5 Pa.s and a density of 500 kg/m2. It is determined that the parameters that are important for this test are: diameter D, density, viscosity, velocity V, the length of the wings L and the drag force F. What must be the speed (m/s) of the model to Choose. + ensure dynamical similitude? What must be the corresponding diameter of the model (cm)? Choose... What is the number/s of dimensionless groups for this problem? Choose... 4>
An airplane that has a cross-sectional diameter D = 4 m of the front portion is to fly at a speed of 600 km/hr in air that has a density of 1.1 kg/m and dynamic viscosity of 1.27 x 10 Pa.s. A small size model of scale ratio (1/17) to be tested in a different fluid that has a dynamic viscosity 5 x 10-5 Pa.s and a density of 500 kg/m2. It is determined that the parameters that are important for this test are: diameter D, density, viscosity, velocity V, the length of the wings L and the drag force F. What must be the speed (m/s) of the model to Choose. + ensure dynamical similitude? What must be the corresponding diameter of the model (cm)? Choose... What is the number/s of dimensionless groups for this problem? Choose... 4>
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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![An airplane that has a cross-sectional diameter D = 4 m of the front
portion is to fly at a speed of 600 km/hr in air that has a density of
1.1 kg/m and dynamic viscosity of 1.27 x 10 Pa.s. A small size
model of scale ratio (1/17) to be tested in a different fluid that has
a dynamic viscosity 5 x 105 Pa .s and a density of 500 kg/m2. It is
determined that the parameters that are important for this test are:
diameter D, density, viscosity, velocity V, the length of the wings L
and the drag force F.
What must be the speed (m/s) of the model to
Choose...
ensure dynamical similitude?
What must be the corresponding diameter of the
model (cm)?
Choose..
What is the number/s of dimensionless groups for
this problem?
Choose...](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc2b579b1-238f-4a45-b5c3-065989083d92%2Fd98927e7-59c0-4867-b5a2-7bb0d4da8d3a%2Fmrz0wmo_processed.jpeg&w=3840&q=75)
Transcribed Image Text:An airplane that has a cross-sectional diameter D = 4 m of the front
portion is to fly at a speed of 600 km/hr in air that has a density of
1.1 kg/m and dynamic viscosity of 1.27 x 10 Pa.s. A small size
model of scale ratio (1/17) to be tested in a different fluid that has
a dynamic viscosity 5 x 105 Pa .s and a density of 500 kg/m2. It is
determined that the parameters that are important for this test are:
diameter D, density, viscosity, velocity V, the length of the wings L
and the drag force F.
What must be the speed (m/s) of the model to
Choose...
ensure dynamical similitude?
What must be the corresponding diameter of the
model (cm)?
Choose..
What is the number/s of dimensionless groups for
this problem?
Choose...
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