3 ms·
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 pre
by 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 agoProbably 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 agoThe 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.