Two weeks after announcing a shock profit warning with government cutbacks on defence spending impacting its military engines business, Rolls revealed plans to build on its successful Trent XWB engine used to power Airbus A350 passenger planes.
"These new designs are the result of implementing our ongoing technology programmes," said Colin Smith, Rolls-Royce Director, Engineering and Technology.
"They are designed to deliver ... Even better fuel efficiency, reliability and environmental performance," he said in a statement delivered alongside a media presentation event in Derby, central England, where the Trent XWB is assembled.
An even more fuel-efficient model, UltraFan, could be ready for service from 2025.
Also Read
Rolls is the sole engine provider for the Airbus A350 XWB, a long-range, wide-body plane which is slated to come into service at the end of the year.
Earlier this month, Rolls said that its profit and revenue would flatten in 2014, as government cutbacks on defence spending ends the company's decade of rampant growth.
News also of a 41-percent slump in annual profits had sent Rolls-Royce shares diving earlier in February.