Aeronautics

5. The direction on your trajectory in which you are going towards
8. Separate section of the rocket that is usually discarted after use that contains its own propellant and engine.
12. A manuver aimed to increase fuel efficiency by tilting the spacecraft slightly during ascent
13. The direction perpendicular to the orbital plane
15. The use of propulsion mechanisms to change an craft's orbit
17. A solid material that when burned release energy for propulsion
18. The opposite reactive force of ejecting hot gas out of the engine

1. A curved trajectory that reaches space but is not quite a n orbit
2. A material that is used together with liquid fuel for combustion when oxygen can't be harnessed from elsewhere
3. Curved trajectory around a massive body that is influenced by gravity
4. Force of gravity acting on an object
6. The opposite direction to normal
7. An orbital manuver usually made on the perigee to enter the moons sphere of influence
9. The direction pointing away from the center of the orbit
10. Machine that converts liquid fuel and oxidiser ito hot air and ejects it
11. The opposite direction of Prograde
14. A type of substance that can be used to harness energy for propulsion
16. The direction pointing to the center of the orbit