A model of a submarine, 1:15 scale is to be tested at 180ft/s in a wind tunnel with standard sea-level air, while the prototype will be operated in sea water.
Homework Answers
Add Answer to:
A model of a submarine, 1:15 scale is to be tested at 180ft/s in
a wind...
[10 points] A model of a submarine, 1:15 scale, is to be tested at 180 ft/s...
[10 points] A model of a submarine, 1:15 scale, is to be tested at 180 ft/s in a wind tunnel with standard sea-level air, while the prototype will be operated in seawater. Determine the speed of the prototype to ensure dynamic similarity 4. Properties of air: p 2.38x103 slugs/ft3, 3.74 x 107 Ib-s/ ft2 Properties of seawater: 1.99 slugs/ft3JL-2.51 x 10-5 lbs/ ft.
A one-third scale model of a car is to be tested in a wind tunnel. The...
A one-third scale model of a car is to be tested in a wind tunnel. The conditions of the actual car are v = 75 km/h and I = 0°C and the air temperature in the wind tunnel is 20°C. In order to achieve similarity between the model and the prototype, the wind tunnel velocity should be The properties of air at 1 atm and 0°C: mass density (p) = 1.292 kg/m3, kinematic viscosity (V) = 1.338x10-5 m2/5 The properties...
A submarine model (L/Lm 52 will be tested in fresh water under two different conditions: a)...
A submarine model (L/Lm 52 will be tested in fresh water under two different conditions: a) b) on the surface, where the prototype moves at 25 kt (knots) submerged, where the prototype moves at 2.9 kt Enforcing dynamic similarity in each case, find the model speed (m/s) and the ratio of drag force on the prototype in seawater compared to that for the model. For case (a), compute the ratio of model to prototype Reynolds numbers and discuss its significance....
You are to conduct a wind tunnel testing of a new football design. It is known...
You are to conduct a wind tunnel testing of a new football design. It is known that you need to maintain Reynold’s number, Re, and Strovhal Number, St, similarity for the testing. Based on a standard college quarterback, prototype velocity, V = 40mph and rotation, ω = 300rpm. The prototype football has a diameter of D=7inches. Due to instrumentation requirements, the model used in the wind tunnel must be twice as big as the prototype. Dmodel=14inches. a) Determine the required...
The drag of a sonar transducer is to be predicted, based on wind tunnel test data....
The drag of a sonar transducer is to be predicted, based on wind tunnel test data. The prototype, a 1-ft diameter sphere, is to be towed at 5 knots (i.e. 8.44 ft/s) in seawater at 40°F. The model is 6 in. in diameter and the drag of the model is measured to be 0.6 lbf for wind tunnel air temperature at 70°F 1) (5 pts) Use Buckingham Pi Theorem to prove that the drag coefficient Cd is related to the...
The drag of a sonar transducer is to be predicted, based on wind tunnel test data....
The drag of a sonar transducer is to be predicted, based on wind tunnel test data. The prototype, a 1-ft diameter sphere, is to be towed at 5 knots (i.e. 8.44 ft/s) in seawater at 40°F. The model is 6 in. in diameter and the drag of the model is measured to be 0.6 lbf for wind tunnel air temperature at 70°F 1) (5 pts) Use Buckingham Pi Theorem to prove that the drag coefficient Cp is related to the...
The drag of a sonar transducer is to be predicted, based on wind tunnel test data....
The drag of a sonar transducer is to be predicted, based on wind tunnel test data. The prototype, a 1-ft diameter sphere, is to be towed at 5 knots (i.e. 8.44 ft/s) in seawater at 40°F. The model is 6 in. in diameter and the drag of the model is measured to be 0.6 lbf for wind tunnel air temperature at 70°F 1) (5 pts) Use Buckingham Pi Theorem to prove that the drag coefficient Cd is related to the...
7.87 A 1:40 scale model of a ship is to be tested in a towing tank. Determine the required kinema...
7.87 A 1:40 scale model of a ship is to be tested in a towing tank. Determine the required kinematic viscosity of the model fluid so that both the Reynolds number and the Froude number are the same for model and prototype. Assume the prototype fluid to be seawater at 60 F. Could any of the liquids with viscosities given in Fig. B.2 in Appendix B be used as the model fluid?
7.87 A 1:40 scale model of a ship...
Ex.3 /35 A Cessna 172 has a cruise speed V-226 km/h and weight W-1,000Kg. The wing area is S-16mt...
Ex.3 /35 A Cessna 172 has a cruise speed V-226 km/h and weight W-1,000Kg. The wing area is S-16mt with a wing span b-1lm Assuming the wing rectangular, what is the Reynolds number at an altitude z-1,000m. A model of this airplane, scaled by a factor of 2, is tested in a wind tunnel at sea level. What should be the velocity in the wind tunnel to have dynamics similarity (neglect Mach number effects). What will be the lift measured...
Chapter 2: Dimensional Analysis Exercise!l 2019 1. Amirul Asyraf's team is to design a human-powe...
how to do this?
Chapter 2: Dimensional Analysis Exercise!l 2019 1. Amirul Asyraf's team is to design a human-powered submarine for a design competition The overall length of the prototype submarine is 2.24 m, and its student designers hope that it can travel fully submerged through water at 0.560 m/s, The water is freshwater (a lake) at T-15°C. The design team builds a one-eighth scale model to test in ther university's wind tunnel. A shield surrounds the drag balance strut...
[10 points] A model of a submarine, 1:15 scale, is to be tested at 180 ft/s in a wind tunnel with standard sea-level air, while the prototype will be operated in seawater. Determine the speed of the prototype to ensure dynamic similarity 4. Properties of air: p 2.38x103 slugs/ft3, 3.74 x 107 Ib-s/ ft2 Properties of seawater: 1.99 slugs/ft3JL-2.51 x 10-5 lbs/ ft.
A one-third scale model of a car is to be tested in a wind tunnel. The conditions of the actual car are v = 75 km/h and I = 0°C and the air temperature in the wind tunnel is 20°C. In order to achieve similarity between the model and the prototype, the wind tunnel velocity should be The properties of air at 1 atm and 0°C: mass density (p) = 1.292 kg/m3, kinematic viscosity (V) = 1.338x10-5 m2/5 The properties...
A submarine model (L/Lm 52 will be tested in fresh water under two different conditions: a) b) on the surface, where the prototype moves at 25 kt (knots) submerged, where the prototype moves at 2.9 kt Enforcing dynamic similarity in each case, find the model speed (m/s) and the ratio of drag force on the prototype in seawater compared to that for the model. For case (a), compute the ratio of model to prototype Reynolds numbers and discuss its significance....
The drag of a sonar transducer is to be predicted, based on wind tunnel test data. The prototype, a 1-ft diameter sphere, is to be towed at 5 knots (i.e. 8.44 ft/s) in seawater at 40°F. The model is 6 in. in diameter and the drag of the model is measured to be 0.6 lbf for wind tunnel air temperature at 70°F 1) (5 pts) Use Buckingham Pi Theorem to prove that the drag coefficient Cd is related to the...
The drag of a sonar transducer is to be predicted, based on wind tunnel test data. The prototype, a 1-ft diameter sphere, is to be towed at 5 knots (i.e. 8.44 ft/s) in seawater at 40°F. The model is 6 in. in diameter and the drag of the model is measured to be 0.6 lbf for wind tunnel air temperature at 70°F 1) (5 pts) Use Buckingham Pi Theorem to prove that the drag coefficient Cp is related to the...
The drag of a sonar transducer is to be predicted, based on wind tunnel test data. The prototype, a 1-ft diameter sphere, is to be towed at 5 knots (i.e. 8.44 ft/s) in seawater at 40°F. The model is 6 in. in diameter and the drag of the model is measured to be 0.6 lbf for wind tunnel air temperature at 70°F 1) (5 pts) Use Buckingham Pi Theorem to prove that the drag coefficient Cd is related to the...
7.87 A 1:40 scale model of a ship is to be tested in a towing tank. Determine the required kinematic viscosity of the model fluid so that both the Reynolds number and the Froude number are the same for model and prototype. Assume the prototype fluid to be seawater at 60 F. Could any of the liquids with viscosities given in Fig. B.2 in Appendix B be used as the model fluid?
7.87 A 1:40 scale model of a ship...
Ex.3 /35 A Cessna 172 has a cruise speed V-226 km/h and weight W-1,000Kg. The wing area is S-16mt with a wing span b-1lm Assuming the wing rectangular, what is the Reynolds number at an altitude z-1,000m. A model of this airplane, scaled by a factor of 2, is tested in a wind tunnel at sea level. What should be the velocity in the wind tunnel to have dynamics similarity (neglect Mach number effects). What will be the lift measured...
how to do this?
Chapter 2: Dimensional Analysis Exercise!l 2019 1. Amirul Asyraf's team is to design a human-powered submarine for a design competition The overall length of the prototype submarine is 2.24 m, and its student designers hope that it can travel fully submerged through water at 0.560 m/s, The water is freshwater (a lake) at T-15°C. The design team builds a one-eighth scale model to test in ther university's wind tunnel. A shield surrounds the drag balance strut...
Most questions answered within 3 hours.
-
T
F 53) Most differences
between human groups are the result of biology rather than
culture....
asked 1 minute ago -
A 5.20 mW helium neon laser emits a visible laser beam with a
wavelength of 633...
asked 4 minutes ago -
Assignment:
Your
organization has made a strategic decision
to
outsourcework
currently performed in house. You have...
asked 3 minutes ago -
A hospital performs 100 surgeries per week. The probability that
complications after surgery occur is 10%....
asked 4 minutes ago -
In preparing its cash flow statement for the year ended December
31, 2018, Green Co. gathered...
asked 6 minutes ago -
Donna is 18 years old and full time accounting student.She is
saving for an overseas holiday...
asked 6 minutes ago -
Service-oriented architectures (SOA) provide
object-oriented architectures for web platforms that represent a
collection of services. SOA...
asked 7 minutes ago -
Le Terroir Winery is considering an expansion project to produce
fine wines. The trial expansion will...
asked 16 minutes ago -
The Bahraini public budget experiences deficit in the last
seven years, what are procedures are taken...
asked 23 minutes ago -
You invested $30,000 in a mutual fund at the beginning of the
year when the NAV...
asked 26 minutes ago -
Would you expect the price elasticity of supply for guitars to
be more inelastic in the...
asked 28 minutes ago -
A snowmobile is originally at the point with position vector
30.1 m at 95.0° counterclockwise from...
asked 28 minutes ago