Need for constant speed if you have constant torque?

[Goldenrivett]

Hi AdamFrisch,

Is it safe to assume that if aircraft had electric propulsion, the need for a CS prop would also be eliminated?

Is this not what we have with the fan on a high bypass gas turbine engine?
The fan blades are set at a fixed angle. The engine fan RPM is varied from about 20% to 100% throughout the aircraft speed range.