By using two propellers that rotate in opposite directions, a ship can use less energy to move forward. New knowledge means ...

The lightweight, aluminum four-blade system achieve more than 50 pounds of weight savings and improve takeoff and climb performance for B300 turbo-prop private aircraft. Textron Inc.’s McCauley ...

Sharrow Marine founder Greg Sharrow came up with his idea for a better propeller while trying to design a drone quiet enough to shoot video of classical music concerts. It was easier to test his ...

The high-efficiency aerodynamic and aeroacoustic optimization framework comprises the following key modules: 1) Shape parameterization, which transforms the baseline geometry into a set of design ...