Polestar 2
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Is doesn't mean the turboshaft are restricted to only these few platform. If new helo coming up and the enginw fit the bill ,requirement. It can be used.None of the helicopters you mentioned have been actively used in the hot conflict, a lot of engines, including Rolls Royce, can go up to these altitudes, do you have any idea what they can do without lubrication for 30 minutes when needed?
But I do know these France/Chinese engine need to pass many stringent requirement in many condition and attitude and clock a lot of working hours without failed before cert by EASA and CAAC.