0 a small remote-controlled aircraft like a helicopter, with four blades that go around on top, used especially to film or photograph things from the air. A quadcopter is a type of drone.
Instead, the quadcopter has a fuselage attached with four ducted fans, with two on each side of the fuselage.
The quadcopter collided with wires designed to prevent helicopters landing to aid escapes, causing it to crash.
The quadcopter was badly damaged by the crash, though an unsuccessful attempt was made to fly it out of the prison.
They are known for being compact, lightweight, rugged, wearable or mountable in unusual places such as outside a quadcopter, planes, cars, boats, bicycle and motorcycle helmets or army tanks.
