Summary
Wind tunnels. Requirements: The wind tunnel shall generate air speeds ranging from 1.5 to 50 m/s. Air speed measuring equipment shall be provided and shall have a total measurement uncertainty less than or equal to 0.75% of reading. The wind tunnel test chamber shall have cross sectional dimensions of 4 x 4 inch at minimum, and 12 x 12 inch at maximum. The wind tunnel shall produce turbulence intensity that is less than or equal to 1%.
The wind tunnel shall have maximum dimensions of 10 x 3 x 6 F LWH when assembled. The wind tunnel shall be able to fit through a standard 32-inch width door. The wind tunnel design shall be open circuit if a closed-circuit design is not available within budget.
For designs greater than 45 kg, the wind tunnel shall be built on a frame with casters. The wind tunnel’s motor shall not exceed 90 dB when generating speeds of 50 m/s. The wind tunnel’s motor shall be powered on a 220V 16A single phase line. See attached file.