De quoi est fait rocket
A vehicle driven by jet thrust; gunpowder rockets came from China.
- Rocket tube — a pour partie. The tube in which the charge burns.
- Black powder charge — a pour partie. Fuel that produces a jet when burned.
- De Laval nozzle — a pour partie. A narrowing at the outlet accelerates the gases and increases thrust.
- Rocket fins — a pour partie. Tail feathers or a stick keep the rocket on course.
- Reaction force — utilise. A rocket moves by reaction force.
- Gunpowder — utilise. The first rockets were powered by gunpowder.
- Paper — est fait de. The first rockets were paper tubes filled with gunpowder.