Perhaps some slight thread drift here but sort of related...
The issue of power required to lift vertically without aerodynamic assistance is also causing huge headaches in the very latest aviation adventure - EVTOL's. There are some very bold claims being made by some manufacturers about the capabilities of their aircraft in terms of range/speed/endurance, but these are actually just aspirations and rarely based in fact and current physics. One of the myriad issues is the requirement to be able to lift and land vertically, as this requires huge amounts of power and it is currently depleting the batteries at such a rate that relatively little is available for the bit between take-off and landing. Some 'industry leaders' are saying their devices will have an endurance of 90 minutes, yet they cannot currently stay airborne for more than 15, due to the limitations of energy density provision by the latest batteries, and the take-off alone is killing them in terms of battery power available for the flight itself.
Great explanation here:
https://www.sciencedirect.com/scienc...42435121002051
Perhaps, in a similar vein to the originators comments, they need a detachable plug which jettisions when the EVTOL is at height and starting the transition to forward flight?...and no, I am not really being serious, but something does need to be done in order for this new technology to meet the claims being made about it.