A single prop can be driven by several motors via a common gear and shaft. Compressor motors can aid in torque for short duration. This would enable replacement of most all existing piston and turbine engines with 2.4-3 times less fuel consumption per power. Each prop would be at least a "twin" with at least two compressors and two motors.
A single motor or several motors to one prop can be installed in a distributed manner along wing or on pilons, as needed. Compressors are remote to prop, saving weight and volume at prop, thus lowering engine related drag. No cooling is needed at prop. Boundary layer blowing and sucking can also be enabled in new designs, thus lowering drag by 50%.
"Power on lift" enables the airplane to increase wing lift CL from a typical 2 to up to 10 CL. This enables landing speeds of less than 1/2 the normal power off landing speed for STOL. Landing can be 50-100 feet depending on wing loading. VTOL can be enabled depending on weight, equipment and power, eliminating the need for a helicopter.
Additional compressors can be added for full power by the motors to above 40,000 feet, if needed. System can operate at Sea Level or 40,000 feet efficiently at full power, if equipped. Over boost also enabled for high power takeoffs/go arounds for short duration. Compressors can be shut down for 10-30 seconds to allow compressor motors to torque a common prop in multiple motor apps. On takeoff, boost power (SL x 1.5) is enabled at any altitude via stored compressed air. Boost power gives short duration power regardless of altitude or temperature. STOL or VTOL enabled as needed. Scalable.
A wheel becomes a remote "prop" but with a wheel drive/gear instead of prop. During landing and takeoff, the wheel can become the sole source of drive power, if needed for legal compliance. Props can be off while wheel accelerates craft on road and instantly turned on seconds before flight (over 30 mph). Wheel can also aid in acceleration when combined with props when legal. Compressed air into water via vector tubes can vector seaplane (or boat) on water, if needed. Stored compressed air can be used for many applications and for zero combustion slow torque of wheels on ramps.
An electrical option is enabled via heating in the motors (used also in starting) from a small battery source. This allows a wheel drive to provide power without combustion when indoors or where combustion is banned. A small Electric motor at high gear ratio for <35 mph speeds can also be added to allow neighborhood zero CO2 driving, if needed. Normal flying, landing and takeoff is via fuel combustion only. Battery Electricity can be used in prop motors for emergency landing should fuel run out. Small battery used for camping is all that is needed. No massive EV battery like that found in EVs.