1. The solid propellant booster weighs an additional 210 kg.

2. A particularly simple form of rocket motor uses solid propellant.

3. The solid propellant makes the missile easy to maintain and deploy.

4. Next come the four segments that contain the solid propellant mixture.

5. The Athena # consists of two solid-propellant stages and a liquid-propellant orbit adjust module (OAM

6. The Airbag system ignites a solid propellant, which burns extremely rapidly to create a large volume of gas to inflate the bag