Air and Space

2. A powered, aerial vehicle that does not carry a human operator, uses aerodynamic forces to provide vehicle lift, can fly autonomously or be piloted remotely, can be expendable or recoverable, and can carry a lethal or nonlethal payload.
4. An aircraft with floats or skis instead of wheels, designed to land on and take off from water.
5. The study of forces and the resulting motion of objects through the air.
6. Branch of technology and industry concerned with aviation and space flight.
7. Robotic aircraft, used extensively by the military.
9. A vehicle, missile, or aircraft which obtains thrust by the reaction to the ejection of fast moving exhaust from within a rocket engine.
11. The study or practice of travel through the air.

1. To set or thrust in motion.
3. A type of aircraft deriving both lift and propulsion from one or two sets of horizontally revolving rotors.
6. The art and science of designing, building, and operating manned or unmanned space objects.
8. A power-driven aircraft kept buoyant by a body of gas (usually helium) which is lighter than air.
10. A powered heavier-than-air aircraft with fixed wings from which the aircraft derives most of its lift.