Rolls-Royce has been awarded a US Army contract to build over 40 engines for the OH-58D Kiowa Warrior armed reconnaissance helicopter.

The US Department of Defense awarded the $19.2m contract after receiving only one bid.

The OH-58D Kiowa Warrior helicopter is capable of performing scout and light-attack missions in support of ground troops.

Work will be performed in Indianapolis, Indiana, US, and is expected to be completed by 31 December 2012.

The company has received in excess of $250m in military contracts to date.