Using multiple helicopters (OEW of the aircraft is 40 tons, so you'll need at least two helicopters) to lift the same weight makes you run into physical problem

Using multiple helicopters (OEW of the aircraft is 40 tons, so you'll need at least two helicopters) to lift the same weight makes you run into physical problems that haven't been overcome yet. It's really hard to reach some sort of stable equilibrium in such a configuration. Russians are likely the people who have the most experience with that so far, and they opted for other solutions despite throwing spaceflight-money at the problem: https://www.buran-energia.com/documentation/documentation-akc-air-transportation.php https://www.buran-energia.com/documentation/documentation-ak... Maybe with modern technology and computer-controlled flight it could be made safe, but getting into that would completely defeat the point, which is to find a cheap way to move the plane.