Power systems giant Rolls-Royce has won a contract to build aircraft engines for the US Marine Corps and Air Force.The $83.7m contract, which is a modification of a prior agreement, includes a total of 38 Rolls-Royce AE 1107C engines manufactured in Indianapolis to power the V-22 aircraft."This contract demonstrates the trust the US Marine Corps and Air Force have in the Rolls-Royce AE 1107C engines which power their V-22 fleets," said Tom Bell, the President of Rolls-Royce's Defence division."Delivering reliable power is our constant focus at Rolls-Royce and we are dedicated to keeping those fleets mission ready for our customers."Rolls-Royce's AE product family has over 5,500 engines in service and more than 54m flight hours under its belt. It exclusively power the V-22 fleet for the US Marine Corps and Air Force.