Later came variable-pitch propellers, where the angle of attack of the blades could be increased collectively to take a bigger “bite” of the air for more thrust. This enabled thrust variation ...

But this supersonic propeller design produced such intense ... drive shafts spinning beside the pilot, and variable pitch blades optimized for transonic airflow, the Thunderscreech pushed engineer ...

The French aerospace firm Ratier was credited with the first practical application of a variable pitch propeller back in 1932. Other famous early variable pitch propellers were designed by the ...

By attaching a wing to each of the arms, it becomes a large variable pitch propeller powered by tip thrusters. To measure the efficiency of the craft, a small lidar sensor was added to allow ...