Mi-17 Toppled on ground

[NightStalker55]

What possibilities are there (less Dynamic Rollover) where Mi-17 helicopter can topple on ground at full RPM ?

[sandiego89]

Several H-60s and a MH-53 were rolled over in a sudden thunderstorm in Norfolk, Virginia, USA recently. The MH-53 is sizable piece of machinery.

https://www.wavy.com/news/local-news...f-obx-tuesday/

[SATCOS WHIPPING BOY]

By trying to hover-taxi whilst tethered in the manner of the Seaking at Boscombe some time ago.

[sycamore]

SWB..Got a reference/report for that...?

[H Peacock]

Originally Posted by SATCOS WHIPPING BOY

By trying to hover-taxi whilst tethered in the manner of the Seaking at Boscombe some time ago.

Ah, the TPs that tried to lift the full-size globe!!

[Cornish Jack]

Rusty memory, but I don't recall a deliberate attempt to taxy. We did 'have a moment' doing low speed power checks with the 'fifth wheel' Bedford lorry and Steve R's 'methods' experiment !

[unmanned_droid]

I should think the main possibilities are -

1. External forces such as weather (as already stated)
2. Poorly damped vehicle-ground interaction - perhaps a failed main landing gear shock strut could cause a divergent vibration condition at some critical rotor speed - I think low RPM would be critical - lower frequency higher amplitude
3. High payload weight poorly loaded perhaps again linked to a strut failure might create a high enough lean angle
4. Combinations of the above
5. Other things that I don't know about!

[SATCOS WHIPPING BOY]

Originally Posted by sycamore

SWB..Got a reference/report for that...?

brief report here: https://aviation-safety.net/wikibase/71524

HTH