. Indoor Sky Diving Facility: The air-handling system for a large vertical wind tunnel used at an indoor sky diving facility has a fan at the inlet located at the bottom, and a test section where the users fly with a circular cross-section of 5.5 m diameter. The designers want to achieve a 200 km/hr air speed in the test section when it is nominally at 22 C and 1.0 bar. (a) What is the mass flow rate of air required by the wind tunnel fan to meet these conditions? (b) If the pressure of the air at the exit of the wind tunnel is 1.5 kPa lower than the pressure in the test section, what is the air velocity at the exit if the air temperature remains at 22 C?