But some drone aircraft are capable of a safe, automatic landing also.

Israel led the world in developing low-tech drone aircraft in the 1980's.

When we talked, he was certain the Predator, a drone aircraft that got great press in the war, had been overpraised.

This bit may be used by drone aircraft.

The pilotless drone aircraft has become key to current conflicts such as Afghanistan.

Similar issues arose in assessing whether Iraq was developing drone aircraft as weapons.

It had undergone several modifications since, and the one in present use was closer to a smart bomb than a drone aircraft.

Remotely controlled target drone aircraft were used to train gun crews.

The Army, meanwhile, is looking to finance research into laser-charged drone aircraft.

The requirement was for the drone aircraft to be taken off, flown and landed by radio control.