Power lift
Dave,
I think my idea for a slow evolution from powered assisted STOL to full VTOL is still valid.
At Oshkosh, I saw a C-17 land with power assisted jet flaps. The airplane looks like the giant C-5 but it can land in 1500 feet! More small airplanes should use this.
The Harrier, also at Oshkosh, performs the full VTOL show of course.
Would electric be the best for brief VTOL lift? I am not sure.
I think the motors can supply brief overload about 2 or 3 times rated power.
But the battery pack cannot be overloaded. The battery for brief burst of power is the problem.
An electric ultralight flew at Oshkosh. I did not see it unfortunately.
An electric Sonex was on display but not flown yet.
Electric is evolving.
slowrotor
p.s. I don't think any cooling would be needed for a brief (1 minute)overload on a small electric motor.