>>1456132Putting them on the wings causes a shitty airflow without uniformity, this is the reason business jets have two turbofans near the body or way above the wings.
A turbine inside the back of the aircraft is way better than "glued" in the tail, but I would still try to keep the three engines far from each other.
A hybrid aircraft could have a single turbine generator like this, some backup power source and well designed electric propellers.
