JamD
SENIOR MEMBER
- Joined
- Mar 26, 2015
- Messages
- 2,238
- Reaction score
- 94
- Country
- Location
Not sure. If he is then:
Green: Primary propulsion - turbojet/turbofan.
Red: Booster - Solid Rocket Motor --- launches CM, brings to speed, allows turbojet/turbofan to spin fast enough to work, then itself falls off