Labels:text | screenshot OCR: ROCKET POWER SPACE TECHNOLOGY SOLID-PROPELLANT ROCKETS All propellants consist of a fuel and an oxidizer. THE SHUTTLE TAKES OFF To fire the rocket, a small explosive ignites the propellant, which burns until it is all used up. The gases escape through a nozzle at the end of INSIDE A SOLID- the rocket. The earliest rockets were probably PROPELLANT ROCKET constructed in China in the 11th century and were When the propellant is solid-propellant rockets, burning gunpowder, a molded, a hole is usually left through its middle so that it mixture of potassium nitrate, charcoal, and sulfur. burns along its whole length. Exhaust Exhaust Hollow center Propellant Ignition system gases nozzle provides even burning surface SPACE TECHNOLOGY SPACE TRAVEL LIVING IN SPACE
