Enstrom Helicopter Corporation at Heli Expo 2023 revealed its development of a new RPM governor for Enstrom piston helicopters. Designed to aid pilots in maintaining rotor RPM, the new governor uses a digital controller and fast-acting servo motor to accurately control RPM.
“The pilot can set the RPM anywhere in the green, and then beep it up and down within the allowable range, just like on a turbine helicopter,” said Bill Taylor, Enstrom’s VP of Engineering. “During autorotation training, it will automatically maintain the RPM just below the green. During the power recovery, it will quickly and reliably increase engine RPM and marry the needles, meaning the student and the instructor won’t ‘forget to roll the throttle back on’, and the engine won’t overspeed during recovery.”
The governor system will be available on new model 280FX and F28F helicopters and available as a retrofit to any 28-volt 280FX and F28F helicopters in the field.
“Enstroms are known to be some of the safest and easiest flying helicopters in their class, and the existing correlator system is a big part of that,” said Todd Tetzlaff, Enstrom’s incoming CEO. “This new digital governor takes it to a whole new level.”