This video covers a project I did some time ago. The Estes SR-71 Blackbird Model Rocket well jet is a single engine kit. I converted it to launch on 2 engines. I made a way for them to both fire and eject the parachute out of the rear of the rocket/jet. The project sits as a failure since I didn't recover it yet. The parachute ripped off and it crashes. I will repair and fly it again.