Top Wind Tunnels

The U.S. Army TMDE Activity (USATA) has a requirement to purchase of two (2) Wind Tunnels that will be used by USATA Engineers and Technicians to provide OCONUS support to customers owning wind speed measuring devices (hot-wire anemometers). Industrial hygiene and chemical testing facilities are impacted by the increased turn-around time of sending their equipment to the APSL. The Wind Tunnels shall include the following specifications or equivalent (if not brand name):

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 feet 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.

Support and Accessories

• The wind tunnel shall be shipped to TMDE Support Center (TSC) Kaiserslautern, Germany and TSC Camp Carroll, South Korea.


• Measuring equipment requires organic calibration support. Any calibration procedure/software required shall be provided.


• All software shall not require an annual subscription or online connection. If software does not have a transferable license, a computer shall be provided to operate it.


• Operating software shall be able to report standard and actual wind speed. It shall also be able to correct for different pressure and temperature conditions.


• Operating software shall be able to export data from test runs.