Across
- 1. airborne
- 4. propels
- 7. space vehicle
- 8. drive with force
- 9. impulse thrust times duration over the motor burn time
- 10. Robert H. Goddard American engineer
- 11. third law of motion push or pull
- 13. pull
Down
- 1. not turbulent
- 2. small rocket engine
- 3. speed
- 5. disturbed
- 6. of pressure a force to act through that point
- 12. von Braun German-American aerospace engineer and space architect