Consider the problem you're trying to solve first. Generally speaking, your problem would be better served by a type of aircraft (or non-aircraft approach) that already exists.

Some of the earliest experiments in this area were for the US army in the 1950s:

https://en.m.wikipedia.org/wiki/Hiller_VZ-1_Pawnee

https://en.m.wikipedia.org/wiki/De_Lackner_HZ-1_Aerocycle