True. Also the electric/turboprop propulsion compromises like Heart Aerospace's that trade off the limitations of the respective powerplants by fitting pairs of

True. Also the electric/turboprop propulsion compromises like Heart Aerospace's that trade off the limitations of the respective powerplants by fitting pairs of both. But that's a different use case... (I get to write about arrayed space thrusters in the day job too, but again, fundamentally different physics and goals...)