Why aren’t there airplane sized helicopters? Helicopters seem better in terms of no long runway needed, and the ease of moving in any direction.

Question

Why aren’t there airplane sized helicopters? Helicopters seem better in terms of no long runway needed, and the ease of moving in any direction.

In: Engineering

Answer 1

Basically a helicopters propellers are pushing the helicopter off the ground. The larger the aircraft the larger the propeller you would need. Once you start getting larger you have to consider the amount energy needed to turn it. The material that would be usable for a propeller that wouldn’t snap from force, etc.