A model propeller of diameter D = 0.8 m is tested in a wind tunnel at pressure and temperature conditions corresponding to an air density p = 1.2 kg/m³. With the propeller spinning at 2 = 2000 rpm (revolutions per minute), the thrust T was measured at several forward velocities V: V (m/s) Thrust (N) 0 10 20 30 300 275 210 100 Use dimensional analysis to find the dimensionless parameters that govern this data. )¯¯¯¯¯¯¯¯¯¯¯¯¯ Using the data, predict the thrust you would expect for a full-scale propeller of diameter D₁ = 3.0 m, spinning at 1500 rpm (revolutions per minute), at a forward velocity of 45 m/s, and at high-altitude conditions where the air density is 0.6 kg/m³. You may need to interpolate or extrapolate the experimental data.
A model propeller of diameter D = 0.8 m is tested in a wind tunnel at pressure and temperature conditions corresponding to an air density p = 1.2 kg/m³. With the propeller spinning at 2 = 2000 rpm (revolutions per minute), the thrust T was measured at several forward velocities V: V (m/s) Thrust (N) 0 10 20 30 300 275 210 100 Use dimensional analysis to find the dimensionless parameters that govern this data. )¯¯¯¯¯¯¯¯¯¯¯¯¯ Using the data, predict the thrust you would expect for a full-scale propeller of diameter D₁ = 3.0 m, spinning at 1500 rpm (revolutions per minute), at a forward velocity of 45 m/s, and at high-altitude conditions where the air density is 0.6 kg/m³. You may need to interpolate or extrapolate the experimental data.
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
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Chapter5: Analysis Of Convection Heat Transfer
Section: Chapter Questions
Problem 5.9P: When a sphere falls freely through a homogeneous fluid, it reaches a terminal velocity at which the...
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![7. A model propeller of diameter D = 0.8 m is tested in a wind tunnel at pressure
and temperature conditions corresponding to an air density p = 1.2 kg/m³.
With the propeller spinning at 2000 rpm (revolutions per minute), the
thrust T was measured at several forward velocities V:
=
V (m/s) Thrust (N)
0
10
20
30
300
275
210
100
(a)
Use dimensional analysis to find the dimensionless parameters that
govern this data.
(b)
Using the data, predict the thrust you would expect for a full-scale
propeller of diameter D₁ 3.0 m, spinning at 1500 rpm (revolutions per
minute), at a forward velocity of 45 m/s, and at high-altitude conditions where
the air density is 0.6 kg/m³. You may need to interpolate or extrapolate the
experimental data.
=](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9dd77f94-a5e7-47d3-a2ba-eff6d53f0d48%2F493339ea-1316-4386-89c0-2183d6758f88%2Fjaxwejy5_processed.png&w=3840&q=75)
Transcribed Image Text:7. A model propeller of diameter D = 0.8 m is tested in a wind tunnel at pressure
and temperature conditions corresponding to an air density p = 1.2 kg/m³.
With the propeller spinning at 2000 rpm (revolutions per minute), the
thrust T was measured at several forward velocities V:
=
V (m/s) Thrust (N)
0
10
20
30
300
275
210
100
(a)
Use dimensional analysis to find the dimensionless parameters that
govern this data.
(b)
Using the data, predict the thrust you would expect for a full-scale
propeller of diameter D₁ 3.0 m, spinning at 1500 rpm (revolutions per
minute), at a forward velocity of 45 m/s, and at high-altitude conditions where
the air density is 0.6 kg/m³. You may need to interpolate or extrapolate the
experimental data.
=
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