We first ran the turbine without the shroud with 5.2 m/s wind velocity and produced .547 amps, 17.8 volts through the 30 ohm resistor load for 30 seconds producing 293 Joules of energy.
Interesting -With the shroud in place and turbine in the wind tunnel the measured wind velocity was 5.8 m/s (thought it should be higher) then we took out the turbine and tested again.
Without the obstruction of the wind turbine we got a whopping 9.8 m/s wind velocity! Performance greatly increased to .785 amps 25.6 volts for 30 seconds worked out to 608 Joules. A team record!