The new NK-32 02 series engine for the modernized Tu-160M2 strategic bomber is undergoing testing by United Engine Corporation, TASS reports.
By Sergey Lysenko (http://russianplanes.net/id122395) [CC BY-SA 4.0 or CC BY-SA 4.0], via Wikimedia Commons
The company says the improve fuel efficiency of the engine will increase the endurance of the bomber.