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Across 3. The top of a plane's flight path 5. A rocket that fires more than one motor simultaneously 6. Diameter of the main tube 7. What happens when the base of the rocket falls nose down, collecting a bunch of dirt/mud inside the rocket 10. Any flame retardant material used to prevent the scorching of the recovery system do to the heat of the ejection charge 12. A projectile's mass divided by the square of its diameter. 13. A transition section at the bottom of the rocket, narrowing it to the width of the motor

Down 1. A situation where a rocket is traveling faster than terminal velocity (q.v.) for a given motor 2. A small explosive device used to detonate larger explosive charges 4. The start of a motor after launch 5. Unstable combustion which has pauses between bursts 8. An opening cut in the top of a parachute to increase the sink rate 9. A semicircular deformation of the leading edge of the body tube cause by the nose cone snapping back and striking the body at ejection 11. A machine that converts energy into mechanical motion