Engineers with the 418th Flight Test Squadron are currently testing a C-130H3 cargo plane equipped with Hamilton Sundstrand NP 2000 propellers. The new eight-bladed composite propellers are shaped to provide additional thrust in the takeoff and low airspeed range while using the current C-130 engines. Regular C-130 "legacy" planes use four-blade propellers. With eight blades, the NP 2000 props are designed to perform with more power and efficiency. "A major limitation propellers have is the wave drag generated by shockwaves when the propeller tips go supersonic," said Dustin Marschik, a 418th FTS performance and flying qualities engineer. "Newer propeller designs...