Flow characteristics for a 30 ft. diameter prototype parachute are to be determined by tests of a 1 ft diameter model parachute in a water tunnel. Some data collected with the model parachute indicate a drag of 17 lb when the water velocity is 4 ft/s. Use the model data to predict the drag on the prototype parachute falling through air at 10 ft/s. Assume the drag to be a function of the velocity, V, the fluid density, ρ, and the parachute diameter, D. [Answer in units of ft]
Flow characteristics for a 30 ft. diameter prototype parachute are to be determined by tests of a 1 ft diameter model parachute in a water tunnel. Some data collected with the model parachute indicate a drag of 17 lb when the water velocity is 4 ft/s. Use the model data to predict the drag on the prototype parachute falling through air at 10 ft/s. Assume the drag to be a function of the velocity, V, the fluid density, ρ, and the parachute diameter, D. [Answer in units of ft]
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Flow characteristics for a 30 ft. diameter prototype parachute are to be determined by tests of a 1 ft diameter model parachute in a water tunnel. Some data collected with the model parachute indicate a drag of 17 lb when the water velocity is 4 ft/s. Use the model data to predict the drag on the prototype parachute falling through air at 10 ft/s. Assume the drag to be a function of the velocity, V, the fluid density, ρ, and the parachute diameter, D. [Answer in units of ft]
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