sLYFa Posted September 5, 2013 Share Posted September 5, 2013 I noticed the Mi-8 to increasingly shake when flying at high forward and/or vertical speed, which I believe is realistic (Vortex Ring, blade-stall). However, I also sometimes expierence shaking when descending at low forward and vertical speed. I was doing a FARP approach with 50km/h forward and 3m/s vertical speed. At about 50m altitude the helicopter started moderately shaking albeit with no noticeable influence on controllability. Anyway, I wonder if this is intended behavior and how it can be explained, as I believe there should be no blade stall occuring at these low speeds. i5-8600k @4.9Ghz, 2080ti , 32GB@2666Mhz, 512GB SSD Link to comment Share on other sites More sharing options...
lmp Posted September 5, 2013 Share Posted September 5, 2013 I noticed the Mi-8 to increasingly shake when flying at high forward and/or vertical speed, which I believe is realistic (Vortex Ring, blade-stall). Vortex Ring State does not happen at high forward speeds. It happens in or near hover when the helicopter is descenting quickly. I was doing a FARP approach with 50km/h forward and 3m/s vertical speed. At about 50m altitude the helicopter started moderately shaking albeit with no noticeable influence on controllability. Anyway, I wonder if this is intended behavior and how it can be explained, as I believe there should be no blade stall occuring at these low speeds. You were transitioning from ETL to hover and if you would continue to slow down without decreasing that descent rate, you would end up on the verge of VRS. Both of those situations (ETL to hover transition and VRS) cause shaking. Link to comment Share on other sites More sharing options...
MauganRa84 Posted September 5, 2013 Share Posted September 5, 2013 I enjoy the shaking on descent, makes it feel like a theme park ride hahaha. ...Sheila rides on crashing nightingale. Intake eyes leave passing vapor trails... [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
TimeKilla Posted September 6, 2013 Share Posted September 6, 2013 Vortex Ring State does not happen at high forward speeds. It happens in or near hover when the helicopter is descenting quickly. Yep only below 40 knots could become an issue. :joystick: YouTube :pilotfly: TimeKilla on Flight Sims over at YouTube. Link to comment Share on other sites More sharing options...
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