2 ms·

The double Mi-6, the Mi-12, was developed and flown but did not make it into production. You can find video walkthroughs on YouTube. https://en.wikipedia.org/w

• belter 2y ago
  Looks a fascinating piece of equipment out of Sci-Fi Anime... Noticed something interesting from the first flight: "...A first flight on 27 June 1967 ended prematurely due to oscillations caused by control problems; one set of main wheels contacted the ground hard bursting a tyre and bending a wheel hub..." The cause of the oscillations proved to be a harmonic amplification of vibrations in the cockpit floor feeding back into the control column when a roll demand was input into the cyclic stick How would they go about diagnosing such a complex interaction in the Sixties?
  • adolph 2y ago
    Probably similar to now mechanically. They got the chinook and others up and going during the same time period. Although I guess the Chinook was quite a bit easier since its mass was distributed out toward the rotors instead of clustered between them.
  • NikkiA 2y ago
    The Mi-6 had some pretty horrible harmonics issues too, if you search on youtube there are videos of them attempting to start one that's at a museum, and several times they abort the startup because the whole helicopter is rocking backwards and forwards after starting the second engine.
• KingOfCoders 2y ago
  I remember that one from being a kid - I had a helicopter card game and it had the same picture as the Wikipedia page.