"...to get more exposure..."
That's never been an issue for Russian Helicopters: between their own stream of
press releases and the constant barrage of articles released by the Kremlin's own
Sputnik News (over 1,600 stories relating to RusHelo and counting), it's already hard enough separating the chaff from the wheat.
Turbomeca engines and a fenestron would suggest collaboration with Eurocopter/Airbus
The Russians have been playing with fenestrons for several decades. They actually tested one on a pre-production Mi-24:
The selection of the Ardiden for the Ka-62 was a direct result of the earlier (
2002) cooperation between Turbomeca and Kamov to integrate the Arrius onto the Ka-226 as a replacement for the Allison 250. The two parties were discussing the Ardiden as early as
April 2007, with the engine formally selected for the Ka-62 in
February 2010, following insurmountable SFC and gearbox issues with the original Saturn RD-600V powerplant. The French engine was presumably the easiest off-the-shelf solution for the Ka-62 given the ITAR issues that would have faced most other Western options, esp. in light of the 2014 certification date planned for the aircraft at the time (itself a 10-year delay from the originally envisaged 2004 date, the preceding Ka-60 Kasatka having first flown in 1998).
I/C