Have you ever played with a toy plane before? Well, imagine that the toy plane can fly on its own, without needing someone to hold and control it. That's kind of what an unmanned combat aerial vehicle (UCAV) is, except it's much bigger and more high-tech.
A UCAV is basically a plane that can fly itself without needing a human pilot inside it. It's guided by a computer system that tells it where to go and what to do. It can be used for many different things, including military missions.
One of the cool things about a UCAV is that it can do things that a human pilot might not be able to do. For example, it can fly for hours and hours without getting tired, and it can go into dangerous places without risking the life of a human pilot.
In terms of combat, a UCAV can carry weapons like bombs and missiles, and can be sent on missions to attack enemy targets. This can be very helpful for military operations because it means that soldiers don't have to risk their lives in dangerous situations.
Overall, a UCAV is a really advanced type of plane that can fly itself and do things that a human pilot might not be able to do. It's a very helpful tool for military operations because it can be used for combat missions without risk to human pilots.