space

3. A powered heavier-than-air aircraft with fixed wings from which the aircraft derives most of its lift.
5. Robotic aircraft, used extensively by the military.
8. Engineer Design machines that fly.
9. A vehicle, missile, or aircraft which obtains thrust by the reaction to the ejection of fast moving exhaust from within a rocket engine.
10. To set or thrust in motion.

1. A short, easily-remembered slogan, verse, or tune.
2. The study of forces and the resulting motion of objects through the air.
4. A power-driven aircraft kept buoyant by a body of gas (usually helium) which is lighter than air.
6. A type of aircraft deriving both lift and propulsion from one or two sets of horizontally revolving rotors.
7. A large bag filled with hot air or gas to make it rise in the air, with a basket for passengers hanging from it.