The Wide World of Fluids article "Modeling Parachutes in a Water Tunnel,". Flow characteristics for a 30-ftdiameter 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 \(17 \mathrm{lb}\) when the water velocity is \(4 \mathrm{ft} / \mathrm{s}\). Use the model data to predict the drag on the prototype parachute falling through air at \(10 \mathrm{ft} / \mathrm{s}\). Assume the drag to be a function of the velocity, \(V\), the fluid density, \(ho\), and the parachute diameter, \(D\).