No, because large intake ducts would greatly increase drag. The propulsion system moves the aircraft, so you are only indirectly and inefficiently drawing power from the engine/aircraft instead of using a simpler and lighter fan belt.

But all is not lost because internal combustion engines are hugely inefficient converting combustion energy into mechanical force. Much heat is simply wasted in exhaust or radiated through cooling systems.

This waste heat energy could be recovered (as it is in steam boilers) by boiling expansion pressure --> turbine or piston motor --> condensation --> reboiling.

Recently a cascading boiling system with 2 or 3 lower temperature boilers recovering the heat from the previous condenser came to mind.

These would add weight and complexity, perhaps better suited for trains. But the amount of heat loss is huge. You may find success there.

Here is some information on power savings by removing an alternator from the engine.

No, because large intake ducts would greatly increase drag. The propulsion system moves the aircraft, so you are only indirectly and inefficiently drawing power from the engine/aircraft instead of using a simpler and lighter fan belt.

But all is not lost because internal combustion engines are hugely inefficient converting combustion energy into mechanical force. Much heat is simply wasted in exhaust or radiated through cooling systems.

This waste heat energy could be recovered (as it is in steam boilers) by boiling expansion pressure --> turbine or piston motor --> condensation --> reboiling.

Recently a cascading boiling system with 2 or 3 lower temperature boilers recovering the heat from the previous condenser came to mind.

These would add weight and complexity, perhaps better suited for trains. But the amount of heat loss is huge. You may find success there.

Here is some information on power savings by removing an alternator from the engine. Now one must see if additional weight of an energy recovery system adding to power requirements is greater or less than that saved from detaching the alternator belt.

No, because large intake ducts would greatly increase drag. The propulsion system moves the aircraft, so you are only indirectly and inefficiently drawing power from the engine/aircraft instead of using a simpler and lighter fan belt.

But all is not lost because internal combustion engines are hugely inefficient converting combustion energy into mechanical force. Much heat is simply wasted in exhaust or radiated through cooling systems.

This waste heat energy could be recovered (as it is in steam boilers) by boiling expansion pressure --> turbine or piston motor --> condensation --> reboiling.

Recently a cascading boiling system with 2 or 3 lower temperature boilers recovering the heat from the previous condenser came to mind.

These would add weight and complexity, perhaps better suited for trains. But the amount of heat loss is huge. You may find success there.

No, because large intake ducts would greatly increase drag. The propulsion system moves the aircraft, so you are only indirectly and inefficiently drawing power from the engine/aircraft instead of using a simpler and lighter fan belt.

But all is not lost because internal combustion engines are hugely inefficient converting combustion energy into mechanical force. Much heat is simply wasted in exhaust or radiated through cooling systems.

This waste heat energy could be recovered (as it is in steam boilers) by boiling expansion pressure --> turbine or piston motor --> condensation --> reboiling.

Recently a cascading boiling system with 2 or 3 lower temperature boilers recovering the heat from the previous condenser came to mind.

These would add weight and complexity, perhaps better suited for trains. But the amount of heat loss is huge. You may find success there.

Here is some information on power savings by removing an alternator from the engine.