Aut cum scuto aut in scuto
That would be a quick end.
A Kuznetsov NK-12 turboprop engine on the Tupolev Tu-95. Billed as the most powerful turboprop engine in history. Also likely to be the noisiest as the counter rotating blade tip velocity exceeds the speed of sound at maximum rpm.http://militaryhistorynow.com/2012/05/14/71/