Radia, a Colorado-based company, wants to build enormous aircraft to transport giant wind turbine blades. It’s betting that ...

Boeing's Aurora Flight Sciences announced the completion of Phase I wind tunnel tests for the aircraft it develops for ...

Since an aircraft can’t reach those speeds with a propeller, it follows that a wind tunnel cannot be driven by propellers, fans, or any such device, and exceed Mach 1 wind speed, either.

as in a wind turbine, or applying energy to the flow, as in a ship or airplane propeller. The theory works in both directions." He added, "It has immediate and direct potential for impact across ...