Aero engine manufacturer Rolls-Royce is still expecting underlying revenues to grow this year and profits to be of a similar level to 2008.In a trading statement covering the second half of the year the company said trading activity across the group’s operations remains consistent with expectations against a background of generally depressed global market conditions.‘Whilst some emerging economies have shown signs of recovery, there is no evidence yet of a sustained and general return to growth across the group's markets,’ said chief executive Sir John Rose.Rose said the order book stood at record levels despite some minor cancellations.‘We continue to invest despite this general economic downturn to support the growing demand for our products and services and we have the financial strength to take advantage of opportunities as they arise,’ Rose said.