Northrop Grumman B-21 Long Range Strategic Bomber

The first image of America's new Long Range Strike Bomber (LRS-B) has been tweeted by the Secretary of the United States Air Force.

Deborah Lee James made the announcement at the Air Warfare Symposium currently underway in Orlando, Florida.

The B-21, as it'll be known, is designed to be a heavy-payload stealth bomber capable of carrying and delivering thermonuclear weapons.

Northrop Grumman was awarded the development contract back in October 2015 but this is the first time designs have been made public. 

More: Spy Planes And Stealth Bombers Arrive In The Cotswolds  

The aircraft could be in operation in a decade's time with the USAF expected to purchase 80-100 of the aircraft at a projected cost of $550 million each. 

Nineteen of Northrop Grumman's B-2 Spirit Stealth Bombers are currently in operation with the US Air Force.

B-2s have seen action in Iraq, Afghanistan and Libya, although their combat debut came in 1999 when they bombed Serbian targets in the Kosovo War. 

Watch: New B-2 Stealth Bomber Video Released